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  • PHP Fingerprinting CMS Versions by their meta tags [migrated]

    - by Mud
    Hey guys I'm having some issues with the speed of my script. I'm a novice I know so getting past that - what suggestions would you have to speed up my script? I was originally just reading in the index.php and then searching the <head> of the page for an array of strings. Then I read about the get_meta_tags and went that way. Then I had issues with some sites having 300 redirects in place so I used curl to check the URL existed and to speed up things but it's still taking 5 minutes or so to execute. <?php function url_exist($url){ $c=curl_init(); curl_setopt($c,CURLOPT_URL,$url); curl_setopt($c,CURLOPT_HEADER,1); curl_setopt($c,CURLOPT_NOBODY,1); curl_setopt($c,CURLOPT_RETURNTRANSFER,1); curl_setopt($c,CURLOPT_FRESH_CONNECT,1); if(!curl_exec($c)){ return false; }else{ return true; } curl_close($c); } function checkVersion($url){ $tags = get_meta_tags($url); if (is_array($tags) && array_key_exists('generator', $tags)) { $v = "<span style='background-color:#7BF55D;color:#A3A0A0'>".$tags['generator']."</span"; }else{ $v="<span style='background-color:#F55D67;color:#A3A0A0'>Metatag not found!</span>"; } return $v; } $row = 1; echo "<table>"; if (($handle = fopen("url.csv", "r")) !== FALSE) { while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) { $num = count($data); $row++; for ($c=0; $c < $num; $c++) { if(url_exist($data[$c])){ echo "<tr><td>".$data[$c]."</td><td>".checkVersion($data[$c])."</td></tr>"; sleep(2); }else{ echo "<tr><td>".$data[$c]."</td><td><td><span style='background-color:#F55D5D;color:#A3A0A0'>URL not valid!<span></td></tr>"; } } } fclose($handle); } echo "</table>"; ?>

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  • Raid superblock missing on single parition. Recovery needed!

    - by user171639
    Ok so I have a 2 TB raid 1 setup that has three partitions: sdc1: linux sdc2: swap sdc3: LVM for data However the LVM will no longer mount. So I thought that I would take the first drive, mount it in linux (ive done this b4), and reset the spare drive to copy the data. Normally I can mount a single drive for data recovery using: sudo su apt-get install mdadm lvm2 mdadm --assemble --scan modprobe dm-mod vgscan vgchange -ay c mount -o ro /dev/c/c /mnt Unfortunately, vgscan doesnot recognize the data partition. It appears as though the superblock on the first drive's data partition was erased while syncing with the second. So now I cannot mount that partition and the second drive is stuck in spare mode. Any ideas? Or a way to force mount the data partition just to copy the data? knoppix@Microknoppix:~$ sudo su root@Microknoppix:/home/knoppix# apt-get install mdadm lvm2 Reading package lists... Done Building dependency tree Reading state information... Done lvm2 is already the newest version. mdadm is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 551 not upgraded. root@Microknoppix:/home/knoppix# mdadm --assemble --scan mdadm: /dev/md/1 has been started with 1 drive (out of 2). mdadm: /dev/md/0 has been started with 1 drive (out of 2). root@Microknoppix:/home/knoppix# modprobe dm-mod root@Microknoppix:/home/knoppix# vgscan Reading all physical volumes. This may take a while... No volume groups found root@Microknoppix:/home/knoppix# cat /proc/mdstat Personalities : [raid1] md0 : active raid1 sdc1[2] 4193268 blocks super 1.2 [2/1] [U_] md1 : active raid1 sdc2[2] 524276 blocks super 1.2 [2/1] [U_] unused devices: <none> root@Microknoppix:/home/knoppix# mdadm -v --assemble --auto=yes /dev/md2 /dev/sdc3 mdadm: looking for devices for /dev/md2 mdadm: no recogniseable superblock on /dev/sdc3 mdadm: /dev/sdc3 has no superblock - assembly aborted root@Microknoppix:/home/knoppix# dumpe2fs /dev/md0 | grep -i superblock dumpe2fs 1.42.4 (12-Jun-2012) Primary superblock at 0, Group descriptors at 1-1 Backup superblock at 32768, Group descriptors at 32769-32769 Backup superblock at 98304, Group descriptors at 98305-98305 Backup superblock at 163840, Group descriptors at 163841-163841 Backup superblock at 229376, Group descriptors at 229377-229377 Backup superblock at 294912, Group descriptors at 294913-294913 Backup superblock at 819200, Group descriptors at 819201-819201 Backup superblock at 884736, Group descriptors at 884737-884737 root@Microknoppix:/home/knoppix# Notes: I can read the super block from the spare drive. I was gonna try and restore the superblock from one of the backups, but i dont know how or if this would work. I also heard creating a new array (mdadm --create) using the same parameters will not delete the data on the drive but i didnt want to risk it. Recommendations?

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  • Is this over-abstraction? (And is there a name for it?)

    - by mwhite
    I work on a large Django application that uses CouchDB as a database and couchdbkit for mapping CouchDB documents to objects in Python, similar to Django's default ORM. It has dozens of model classes and a hundred or two CouchDB views. The application allows users to register a "domain", which gives them a unique URL containing the domain name that gives them access to a project whose data has no overlap with the data of other domains. Each document that is part of a domain has its domain property set to that domain's name. As far as relationships between the documents go, all domains are effectively mutually exclusive subsets of the data, except for a few edge cases (some users can be members of more than one domain, and there are some administrative reports that include all domains, etc.). The code is full of explicit references to the domain name, and I'm wondering if it would be worth the added complexity to abstract this out. I'd also like to know if there's a name for the sort of bound property approach I'm taking here. Basically, I have something like this in mind: Before in models.py class User(Document): domain = StringProperty() class Group(Document): domain = StringProperty() name = StringProperty() user_ids = StringListProperty() # method that returns related document set def users(self): return [User.get(id) for id in self.user_ids] # method that queries a couch view optimized for a specific lookup @classmethod def by_name(cls, domain, name): # the view method is provided by couchdbkit and handles # wrapping json CouchDB results as Python objects, and # can take various parameters modifying behavior return cls.view('groups/by_name', key=[domain, name]) # method that creates a related document def get_new_user(self): user = User(domain=self.domain) user.save() self.user_ids.append(user._id) return user in views.py: from models import User, Group # there are tons of views like this, (request, domain, ...) def create_new_user_in_group(request, domain, group_name): group = Group.by_name(domain, group_name)[0] user = User(domain=domain) user.save() group.user_ids.append(user._id) group.save() in group/by_name/map.js: function (doc) { if (doc.doc_type == "Group") { emit([doc.domain, doc.name], null); } } After models.py class DomainDocument(Document): domain = StringProperty() @classmethod def domain_view(cls, *args, **kwargs): kwargs['key'] = [cls.domain.default] + kwargs['key'] return super(DomainDocument, cls).view(*args, **kwargs) @classmethod def get(cls, *args, **kwargs, validate_domain=True): ret = super(DomainDocument, cls).get(*args, **kwargs) if validate_domain and ret.domain != cls.domain.default: raise Exception() return ret def models(self): # a mapping of all models in the application. accessing one returns the equivalent of class BoundUser(User): domain = StringProperty(default=self.domain) class User(DomainDocument): pass class Group(DomainDocument): name = StringProperty() user_ids = StringListProperty() def users(self): return [self.models.User.get(id) for id in self.user_ids] @classmethod def by_name(cls, name): return cls.domain_view('groups/by_name', key=[name]) def get_new_user(self): user = self.models.User() user.save() views.py @domain_view # decorator that sets request.models to the same sort of object that is returned by DomainDocument.models and removes the domain argument from the URL router def create_new_user_in_group(request, group_name): group = request.models.Group.by_name(group_name) user = request.models.User() user.save() group.user_ids.append(user._id) group.save() (Might be better to leave the abstraction leaky here in order to avoid having to deal with a couchapp-style //! include of a wrapper for emit that prepends doc.domain to the key or some other similar solution.) function (doc) { if (doc.doc_type == "Group") { emit([doc.name], null); } } Pros and Cons So what are the pros and cons of this? Pros: DRYer prevents you from creating related documents but forgetting to set the domain. prevents you from accidentally writing a django view - couch view execution path that leads to a security breach doesn't prevent you from accessing underlying self.domain and normal Document.view() method potentially gets rid of the need for a lot of sanity checks verifying whether two documents whose domains we expect to be equal are. Cons: adds some complexity hides what's really happening requires no model modules to have classes with the same name, or you would need to add sub-attributes to self.models for modules. However, requiring project-wide unique class names for models should actually be fine because they correspond to the doc_type property couchdbkit uses to decide which class to instantiate them as, which should be unique. removes explicit dependency documentation (from group.models import Group)

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  • Multitenancy in SQL Azure

    - by cibrax
    If you are building a SaaS application in Windows Azure that relies on SQL Azure, it’s probably that you will need to support multiple tenants at database level. This is short overview of the different approaches you can use for support that scenario, A different database per tenant A new database is created and assigned when a tenant is provisioned. Pros Complete isolation between tenants. All the data for a tenant lives in a database only he can access. Cons It’s not cost effective. SQL Azure databases are not cheap, and the minimum size for a database is 1GB.  You might be paying for storage that you don’t really use. A different connection pool is required per database. Updates must be replicated across all the databases You need multiple backup strategies across all the databases Multiple schemas in a database shared by all the tenants A single database is shared among all the tenants, but every tenant is assigned to a different schema and database user. Pros You only pay for a single database. Data is isolated at database level. If the credentials for one tenant is compromised, the rest of the data for the other tenants is not. Cons You need to replicate all the database objects in every schema, so the number of objects can increase indefinitely. Updates must be replicated across all the schemas. The connection pool for the database must maintain a different connection per tenant (or set of credentials) A different user is required per tenant, which is stored at server level. You have to backup that user independently. Centralizing the database access with store procedures in a database shared by all the tenants A single database is shared among all the tenants, but nobody can read the data directly from the tables. All the data operations are performed through store procedures that centralize the access to the tenant data. The store procedures contain some logic to map the database user to an specific tenant. Pros You only pay for a single database. You only have a set of objects to maintain and backup. Cons There is no real isolation. All the data for the different tenants is shared in the same tables. You can not use traditional ORM like EF code first for consuming the data. A different user is required per tenant, which is stored at server level. You have to backup that user independently. SQL Federations A single database is shared among all the tenants, but a different federation is used per tenant. A federation in few words, it’s a mechanism for horizontal scaling in SQL Azure, which basically uses the idea of logical partitions to distribute data based on certain criteria. Pros You only have a single database with multiple federations. You can use filtering in the connections to pick the right federation, so any ORM could be used to consume the data. Cons There is no real isolation at that database level. The isolation is enforced programmatically with federations.

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  • C Programming arrays, I dont understand how I would go about making this program, If anyone can just guide me through the basic outline please :) [on hold]

    - by Rashmi Kohli
    Problem The temperature of a car engine has been measured, from real-world experiments, as shown in the table and graph below: Time (min) Temperature (oC) 0 20 1 36 2 61 3 68 4 77 5 110 Use linear regression to find the engine’s temperature at 1.5 minutes, 4.3 minutes, and any other time specified by the user. Background In engineering, many times we measure several data points in an experiment, but then we need to predict a value that we have not measured which lies between two measured values, such as the problem statement above. If the relation between the measured parameters seems to be roughly linear, then we can use linear regression to find the relationship between those parameters. In the graph of the problem statement above, the relation seems to be roughly linear. Hence, we can apply linear regression to the above problem. Assuming y {y0, y1, …yn-1} has a linear relation with x {x0, x1, … xn-1}, we can say that: y = mx+b where m and b can be found with linear regression as follows: For the problem in this lab, using linear regression gives us the following line (in blue) compared to the measured curve (in red). As you can see, there is usually a difference between the measured values and the estimated (predicted) values. What linear regression does is to minimize those differences and still give us a straight line (blue). Other methods, such as non-linear regression, are also possible to achieve higher accuracy and better curve fitting. Requirements Your program should first print the table of the temperatures similar to the way it’s printed in the problem statement. It should then calculate the temperature at minute 1.5 and 4.3 and show the answers to the user. Next, it should prompt the user to enter a time in minutes (or -1 to quit), and after reading the user’s specified time it should give the value of the engine’s temperature at that time. It should then go back to the prompt. Hints •Use a one dimensional array to store the temperature values given in the problem statement. •Use functions to separate tasks such as calculating m, calculating b, calculating the temperature at a given time, printing the prompt, etc. You can then give your algorithm as well as you pseudo code per function, as opposed to one large algorithm diagram or one large sequence of pseudo code.

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  • How to implement a multi-part snake with smooth movement? [closed]

    - by Jamie
    Sorry that i couldnt answer on my previous post but it got closed. I couldnt answer because i had to prepair for my finals. As there were problems with understanding of what im trying to achieve, im going to describe a little bit more in depth. Im creating a game in which you steer a snake. I assume everybody knows how that works. But in my case the snake isnt just propagating in an array element by element. Imagine a 2Dgrid on which the snake moves. Its 10x10 tiles. Lets say one tile is 4x4 meters. The snakes head spawns in the middle of the (3,2) tile (beginning with (0,0)), so its position is (4*3+2,4*2+2)(the 2's are so that the snake is in the middle of the 4x4 tile). And heres where the fun begins. when the snake moves, it doesnt jump to next tile. Instead it moves a fraction of the way there. So lets say the snake is heading to tile (4,2). After it moved once, its position is (4*3+2+0.1,4*2+2), where 0.1 is the fraction of the way it moved. This is done to achieve smooth movement. So now im adding the rest of the body. The rest is supposed to move along the exact same path as the head did. I implemented it so that each part of the body has its own position and direction. Then i apply this algorithm: 1.Move each part in its direction. 2.If a part is in the middle of the tile(which implies all of them are), change each parts direction to the direction of the part proceeding it. As i said before i could make this work, but i cant stop thinking that im overlooking a much easier and cleaner solution. So this is my question. Is there any easier/better/faster way to do this?

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  • ADF page security - the untold password rule

    - by ankuchak
    I'm kinda new to Oracle ADF. So, in this blog post I'm going to share something with you that I faced (and recovered from) recently. Initially I thought if I should at all put a blog post on this, because it's totally simple. Still, simplicity is a relative term. So without wasting further time, let's kick off.    I was exploring the ADF security aspect to secure a page through html basic authentication. The idea is very simple and the credential store etc. come into picture. But I was not able to run a successful test of this phenomenally simple thing even after trying for over 30 minutes. This is what I did.   I created a simple jsf page and put a panel in it. And I put a simple el to show the current user name.  Next I created a user that I should test with. I named the password as myuser, just to keep it simple. Then I created an enterprise role and mapped the user that I just created. Then I created an application role and mapped the enterprise role to it. Then I mapped the resource, the simple jsf page in this case, to this application role. This way, only users with the given application role can only access this page (as if you didn't know this duh!).  Of course, I had to create the page definition for the page before I could map it to an application role. What else! done! Then I hit the run menu item and it all went well...   Until... I got this message. I put the correct credentials repeatedly 2-3 times. Still I got the same error. Why? I didn't get any error message during the deployment. nope.  Then, as I said before, I spent over 30 minutes trying different things out, things like mapping only the user(not the role) to the page, changing the context root etc. Nothing worked!  Then of course, I bothered to look at the logs and found this. See the first red line. That says it all. So the problem was with that password. The password must have at least one special character and one digit in it. I think I was misled by the missing password hint/rule and the fact that the deployment didn't fail even if the user was not created properly. Well, yes, I agree that I was fool enough not to look at the logs.  Later I changed the password to something like myuser123# . And it worked. I hope it helped.

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  • Help with DB Structure, vOD site

    - by Chud37
    I have a video on demand style site that hosts series of videos under different modules. However with the way I have designed the database it is proving to be very slow. I have asked this question before and someone suggested indexing, but i cannot seem to get my head around it. But I would like someone to help with the structure of the database here to see if it can be improved. The core table is Videos: ID bigint(20) (primary key, auto-increment) pID text airdate text title text subject mediumtext url mediumtext mID int(11) vID int(11) sID int(11) pID is a unique 5 digit string to each video that is a shorthand identifier. Airdate is the TS, (stored in text format, right there maybe I should change that to TIMESTAMP AUTO UPDATE), title is self explanatory, subject is self explanatory, url is the hard link on the site to the video, mID is joined to another table for the module title, vID is joined to another table for the language of the video, (english, russian, etc) and sID is the summary for the module, a paragraph stored in an external database. The slowest part of the website is the logging part of it. I store the data in another table called 'Hits': id mediumint(10) (primary key, auto-increment) progID text ts int(10) Again, here (this was all made a while ago) but my Timestamp (ts) is an INT instead of ON UPDATE CURRENT TIMESTAMP, which I guess it should be. However This table is now 47,492 rows long and the script that I wrote to process it is very very slow, so slow in fact that it times out. A row is added to this table each time a user clicks 'Play' on the website and then so the progID is the same as the pID, and it logs the php time() timestamp in ts. Basically I load the entire database of 'Hits' into an array and count the hits in each day using the TS column. I am guessing (i'm quite slow at all this, but I had no idea this would happen when I built the thing) that this is possibly the worst way to go about this. So my questions are as follows: Is there a better way of structuring the 'Videos' table, is so, what do you suggest? Is there a better way of structuring 'hits', if so, please help/tell me! Or is it the fact that my tables are fine and the PHP coding is crappy?

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  • Webcast On-Demand: Building Java EE Apps That Scale

    - by jeckels
    With some awesome work by one of our architects, Randy Stafford, we recently completed a webcast on scaling Java EE apps efficiently. Did you miss it? No problem. We have a replay available on-demand for you. Just hit the '+' sign drop-down for access.Topics include: Domain object caching Service response caching Session state caching JSR-107 HotCache and more! Further, we had several interesting questions asked by our audience, and we thought we'd share a sampling of those here for you - just in case you had the same queries yourself. Enjoy! What is the largest Coherence deployment out there? We have seen deployments with over 500 JVMs in the Coherence cluster, and deployments with over 1000 JVMs using the Coherence jar file, in one system. On the management side there is an ecosystem of monitoring tools from Oracle and third parties with dashboards graphing values from Coherence's JMX instrumentation. For lifecycle management we have seen a lot of custom scripting over the years, but we've also integrated closely with WebLogic to leverage its management ecosystem for deploying Coherence-based applications and managing process life cycles. That integration introduces a new Java EE archive type, the Grid Archive or GAR, which embeds in an EAR and can be seen by a WAR in WebLogic. That integration also doesn't require any extra WebLogic licensing if Coherence is licensed. How is Coherence different from a NoSQL Database like MongoDB? Coherence can be considered a NoSQL technology. It pre-dates the NoSQL movement, having been first released in 2001 whereas the term "NoSQL" was coined in 2009. Coherence has a key-value data model primarily but can also be used for document data models. Coherence manages data in memory currently, though disk persistence is in a future release currently in beta testing. Where the data is managed yields a few differences from the most well-known NoSQL products: access latency is faster with Coherence, though well-known NoSQL databases can manage more data. Coherence also has features that well-known NoSQL database lack, such as grid computing, eventing, and data source integration. Finally Coherence has had 15 years of maturation and hardening from usage in mission-critical systems across a variety of industries, particularly financial services. Can I use Coherence for local caching? Yes, you get additional features beyond just a java.util.Map: you get expiration capabilities, size-limitation capabilities, eventing capabilites, etc. Are there APIs available for GoldenGate HotCache? It's mostly a black box. You configure it, and it just puts objects into your caches. However you can treat it as a glass box, and use Coherence event interceptors to enhance its behavior - and there are use cases for that. Are Coherence caches updated transactionally? Coherence provides several mechanisms for concurrency control. If a project insists on full-blown JTA / XA distributed transactions, Coherence caches can participate as resources. But nobody does that because it's a performance and scalability anti-pattern. At finer granularity, Coherence guarantees strict ordering of all operations (reads and writes) against a single cache key if the operations are done using Coherence's "EntryProcessor" feature. And Coherence has a unique feature called "partition-level transactions" which guarantees atomic writes of multiple cache entries (even in different caches) without requiring JTA / XA distributed transaction semantics.

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  • "Collection Wrapper" pattern - is this common?

    - by Prog
    A different question of mine had to do with encapsulating member data structures inside classes. In order to understand this question better please read that question and look at the approach discussed. One of the guys who answered that question said that the approach is good, but if I understood him correctly - he said that there should be a class existing just for the purpose of wrapping the collection, instead of an ordinary class offering a number of public methods just to access the member collection. For example, instead of this: class SomeClass{ // downright exposing the concrete collection. Things[] someCollection; // other stuff omitted Thing[] getCollection(){return someCollection;} } Or this: class SomeClass{ // encapsulating the collection, but inflating the class' public interface. Thing[] someCollection; // class functionality omitted. public Thing getThing(int index){ return someCollection[index]; } public int getSize(){ return someCollection.length; } public void setThing(int index, Thing thing){ someCollection[index] = thing; } public void removeThing(int index){ someCollection[index] = null; } } We'll have this: // encapsulating the collection - in a different class, dedicated to this. class SomeClass{ CollectionWrapper someCollection; CollectionWrapper getCollection(){return someCollection;} } class CollectionWrapper{ Thing[] someCollection; public Thing getThing(int index){ return someCollection[index]; } public int getSize(){ return someCollection.length; } public void setThing(int index, Thing thing){ someCollection[index] = thing; } public void removeThing(int index){ someCollection[index] = null; } } This way, the inner data structure in SomeClass can change without affecting client code, and without forcing SomeClass to offer a lot of public methods just to access the inner collection. CollectionWrapper does this instead. E.g. if the collection changes from an array to a List, the internal implementation of CollectionWrapper changes, but client code stays the same. Also, the CollectionWrapper can hide certain things from the client code - from example, it can disallow mutation to the collection by not having the methods setThing and removeThing. This approach to decoupling client code from the concrete data structure seems IMHO pretty good. Is this approach common? What are it's downfalls? Is this used in practice?

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  • Generate GUID from any string using C#

    - by Haitham Khedre
    Some times you need to generate GUID from a string which is not valid for GUID constructor . so what we will do is to get a valid input from string that the GUID constructor will accept it. It is recommended to be sure that the string that you will generate a GUID from it some how unique. The Idea is simple is to convert the string to 16 byte Array which the GUID constructor will accept it. The code will talk : using System; using System.Text; namespace StringToGUID { class Program { static void Main(string[] args) { int tokenLength = 32; int guidByteSize = 16; string token = "BSNAItOawkSl07t77RKnMjYwYyG4bCt0g8DVDBv5m0"; byte[] b = new UTF8Encoding().GetBytes(token.Substring(token.Length - tokenLength, tokenLength).ToCharArray(), 0, guidByteSize); Guid g = new Guid(b); Console.WriteLine(g.ToString()); token = "BSNePf57YwhzeE9QfOyepPfIPao4UD5UohG_fI-#eda7d"; b = new UTF8Encoding().GetBytes(token.Substring(token.Length - tokenLength, tokenLength).ToCharArray(), 0, guidByteSize); g = new Guid(b); Console.WriteLine(g.ToString()); Console.Read(); } } } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }   And The output: 37306c53-3774-5237-4b6e-4d6a59775979 66513945-794f-7065-5066-4950616f3455

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  • Is this a valid implementation of the repository pattern?

    - by user1578653
    I've been reading up about the repository pattern, with a view to implementing it in my own application. Almost all examples I've found on the internet use some kind of existing framework rather than showing how to implement it 'from scratch'. Here's my first thoughts of how I might implement it - I was wondering if anyone could advise me on whether this is correct? I have two tables, named CONTAINERS and BITS. Each CONTAINER can contain any number of BITs. I represent them as two classes: class Container{ private $bits; private $id; //...and a property for each column in the table... public function __construct(){ $this->bits = array(); } public function addBit($bit){ $this->bits[] = $bit; } //...getters and setters... } class Bit{ //some properties, methods etc... } Each class will have a property for each column in its respective table. I then have a couple of 'repositories' which handle things to do with saving/retrieving these objects from the database: //repository to control saving/retrieving Containers from the database class ContainerRepository{ //inject the bit repository for use later public function __construct($bitRepo){ $this->bitRepo = $bitRepo; } public function getById($id){ //talk directly to Oracle here to all column data into the object //get all the bits in the container $bits = $this->bitRepo->getByContainerId($id); foreach($bits as $bit){ $container->addBit($bit); } //return an instance of Container } public function persist($container){ //talk directly to Oracle here to save it to the database //if its ID is NULL, create a new container in database, otherwise update the existing one //use BitRepository to save each of the Bits inside the Container $bitRepo = $this->bitRepo; foreach($container->bits as $bit){ $bitRepo->persist($bit); } } } //repository to control saving/retrieving Bits from the database class BitRepository{ public function getById($id){} public function getByContainerId($containerId){} public function persist($bit){} } Therefore, the code I would use to get an instance of Container from the database would be: $bitRepo = new BitRepository(); $containerRepo = new ContainerRepository($bitRepo); $container = $containerRepo->getById($id); Or to create a new one and save to the database: $bitRepo = new BitRepository(); $containerRepo = new ContainerRepository($bitRepo); $container = new Container(); $container->setSomeProperty(1); $bit = new Bit(); $container->addBit($bit); $containerRepo->persist($container); Can someone advise me as to whether I have implemented this pattern correctly? Thanks!

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  • Java game applet development

    - by RomZes
    I'm getting 4 sec delay when sending objects over UDP. Working on small game and trying to implement multiplayer. For now just trying to synchronize movements of 2 balls on the screen. StartingPoint.java is my server(first player), that receiving serialized objects (coordinates). SecondPlayer.java is client that sending serialized objects to server. When I'm moving my first object it appears 4 seconds later on different screen. StartingPoint.java @Override public void run() { byte[] receiveData = new byte[256]; byte[] sendData = new byte[256]; // DatagramSocket socketS; try { socket = new DatagramSocket(5000); System.out.println("Socket created on "+ port + " port"); } catch (SocketException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } while(true){ b1.update(this); b3.update(); System.out.println("Starting server..."); //// Receiving and deserializing object try { //socket.setSoTimeout(1000); DatagramPacket packet = new DatagramPacket(buf, buf.length); socket.receive(packet); byte[] data = packet.getData(); ByteArrayInputStream in = new ByteArrayInputStream(data); ObjectInputStream is = new ObjectInputStream(in); // socket.setSoTimeout(300); b1 = (Ball) is.readObject(); } catch (IOException | ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } repaint(); try { Thread.sleep(17); } catch (InterruptedException e) { e.printStackTrace(); } SecondPlayer.java @Override public void run() { while(true){ b.update(); networkSend(); repaint(); try { Thread.sleep(17); } catch (InterruptedException e) { e.printStackTrace(); } } public void networkSend(){ // Serialize to a byte array try { ByteArrayOutputStream bStream = new ByteArrayOutputStream(); ObjectOutputStream oo; oo = new ObjectOutputStream(bStream); oo.writeObject(b); oo.flush(); oo.close(); byte[] bufCar = bStream.toByteArray(); //socket = new DatagramSocket(); //socket.setSoTimeout(1000); InetAddress address = InetAddress.getByName("localhost"); DatagramPacket packet = new DatagramPacket(bufCar, bufCar.length, address, port); socket.send(packet); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }

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  • Dell VRTX - slow cluster shared storage

    - by NorbyTheGeek
    I have a brand new Dell VRTX box set up as a Failover Cluster running HA Hyper-V virtual machines. This is my first time setting up clustering, and my first time with one of these boxes, so I'm sure I've missed something. The virtual machines are experiencing high disk latency and bad performance when accessing their VHD(x) files located on a Cluster Shared Volume. The VRTX has 10 x 900 GB 10K SAS drives in RAID 6 configuration, and the VRTX has the redundant Shared PERC 8 controllers. Both blades have full access to the virtual disks. There are two M520 blades installed, each with 128 GB RAM. MPIO is configured for the PERC 8 controllers. Operating system on the blades is Server 2012 (NOT R2). The RAID 6 array is split into a small (8 GB) volume for cluster quorum witness and a large (6.5 TB) volume for a Cluster Shared Volume (mounted on the nodes as C:\ClusterStorage\Volume1) An example of slow disk access: logging into a Server 2012 VM and having Server Manager come up automatically. Disk access goes to 100%, with write speeds at 20 MB or so, read speeds of 500 KB or so, and Average Response Time of over 1000 ms, sometimes spiking at 4000-5000 ms or so. It's the latency that really worries me. Is there something specific I should look at in my configuration? It doesn't seem to matter whether I use VHD or VHDX, dynamic or static.

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  • SQL Server Licensing in a VMware vSphere Cluster

    - by Helvick
    If I have SQL Server 2008 instances running in virtual machines on a VMware vSphere cluster with vMotion\DRS enabled so that the VM's can (potentially) run on any one of the physical servers in the cluster what precisely are the license requirements? For example assume that I have 4 physical ESX Hosts with dual physical CPU's and 3 separate single vCPU Virtual Machines running SQL Server 2008 running in that cluster. How many SQL Standard Processor licenses would I need? Is it 3 (one per VM) or 12 (one per VM on each physical host) or something else? How many SQL Enterprise Processor licenses would I need? Is it 3 (one per VM) or 8 (one for each physical CPU in the cluster) or, again, something else? The range in the list prices for these options goes from $17k to $200k so getting it right is quite important. Bonus question: If I choose the Server+CAL licensing model do I need to buy multiple Server instance licenses for each of the ESX hosts (so 12 copies of the SQL Server Standard server license so that there are enough licenses on each host to run all VM's) or again can I just license the VM and what difference would using Enterprise per server licensing make? Edited to Add Having spent some time reading the SQL 2008 Licensing Guide (63 Pages! Includes Maps!*) I've come across this: • Under the Server/CAL model, you may run unlimited instances of SQL Server 2008 Enterprise within the server farm, and move those instances freely, as long as those instances are not running on more servers than the number of licenses assigned to the server farm. • Under the Per Processor model, you effectively count the greatest number of physical processors that may support running instances of SQL Server 2008 Enterprise at any one time across the server farm and assign that number of Processor licenses And earlier: ..For SQL Server, these rule changes apply to SQL Server 2008 Enterprise only. By my reading this means that for my 3 VM's I only need 3 SQL 2008 Enterprise Processor Licenses or one copy of Server Enterprise + CALs for the cluster. By implication it means that I have to license all processors if I choose SQL 2008 Standard Processor licensing or that I have to buy a copy of SQL Server 2008 Standard for each ESX host if I choose to use CALs. *There is a map to demonstrate that a Server Farm cannot extend across an area broader than 3 timezones unless it's in the European Free Trade Area, I wasn't expecting that when I started reading it.

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  • How to disable the RAID in x3400 M2

    - by BanKtsu
    Hi I just wanna disable the default RAID in my server IBM System X3400 M2 Server(7837-24X),i have 3 disk drives SAS. I want to make them a JBOD "Just a Bunch Of Disks", because I want to install in the drive 0 CentOS, and the other two make them cache files for a squid server. I disable the RAID in the BIOS: System Settings/Adapters and UEFI drivers/LSI Logic Fusion MPT SAS Driver -PciRoot(0x0)/Pci(0x3,0X0)/Pci(0x0,0x0) LSI Logic MPT Setup Utility RAID Properties/Delete Array Later I boot the CentOS live CD and install the OS in the drive 0, and the others 2 mounted like this: *LVM Volume Groups vg_proxyserver 139508 lv_root 51200 / ext4 lv_home 84276 /home ext4 lv_swap 4032 Hard Drive sdb(/dev/sdb) free 140011 sdc(/dev/sdc) free 140011 sdd(/dev/sdd) sdd1 500 /boot ext4 sdd2 139512 vg_proxyserver physical volume(LVM) But when I restart the server give me the error: Boot failed Hard Disk 0 UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15130,0X0)) ........PXE-E18:Server response timeout. UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15132,0X0)) ........PXE-E18:Server response timeout. and the OS not start. The IBM force me to do a RAID?,why?

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  • therubyracer on Ubuntu install issues with ruby-2.0.0-p247

    - by Victor S
    I can't seem to get therubyracer gem installed on ubuntu, i get the following errors, anyone can help? ERROR: Error installing therubyracer: ERROR: Failed to build gem native extension. /home/victorstan/.rvm/rubies/ruby-2.0.0-p247/bin/ruby extconf.rb checking for main() in -lpthread... yes creating Makefile make compiling constraints.cc compiling array.cc compiling value.cc compiling invocation.cc compiling primitive.cc compiling trycatch.cc compiling context.cc compiling exception.cc compiling template.cc compiling accessor.cc compiling object.cc compiling script.cc compiling external.cc compiling stack.cc compiling gc.cc compiling backref.cc compiling heap.cc compiling v8.cc compiling constants.cc compiling date.cc compiling function.cc compiling rr.cc compiling message.cc compiling init.cc compiling string.cc compiling handles.cc compiling signature.cc compiling locker.cc linking shared-object v8/init.so g++: /home/victorstan/.rvm/gems/ruby-2.0.0-p247@global/gems/libv8-3.11.8.17-x86_64-linux/vendor/v8/out/ia32.release/obj.target/tools/gyp/libv8_base.a: No such file or directory g++: /home/victorstan/.rvm/gems/ruby-2.0.0-p247@global/gems/libv8-3.11.8.17-x86_64-linux/vendor/v8/out/ia32.release/obj.target/tools/gyp/libv8_snapshot.a: No such file or directory make: *** [init.so] Error 1 Update It seems it's trying to use a 32 bit library instead of a 64 bit library, anyone else experience issue trying to install 64 bit applications and packages on Ubuntu, and it trying to install 32 bit version instead (even though the system is a 64 Linux)? Related: https://github.com/cowboyd/therubyracer/issues/262

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  • SQL Server Licensing in a VMware vSphere Cluster

    - by Helvick
    If I have SQL Server 2008 instances running in virtual machines on a VMware vSphere cluster with vMotion\DRS enabled so that the VM's can (potentially) run on any one of the physical servers in the cluster what precisely are the license requirements? For example assume that I have 4 physical ESX Hosts with dual physical CPU's and 3 separate single vCPU Virtual Machines running SQL Server 2008 running in that cluster. How many SQL Standard Processor licenses would I need? Is it 3 (one per VM) or 12 (one per VM on each physical host) or something else? How many SQL Enterprise Processor licenses would I need? Is it 3 (one per VM) or 8 (one for each physical CPU in the cluster) or, again, something else? The range in the list prices for these options goes from $17k to $200k so getting it right is quite important. Bonus question: If I choose the Server+CAL licensing model do I need to buy multiple Server instance licenses for each of the ESX hosts (so 12 copies of the SQL Server Standard server license so that there are enough licenses on each host to run all VM's) or again can I just license the VM and what difference would using Enterprise per server licensing make? Edited to Add Having spent some time reading the SQL 2008 Licensing Guide (63 Pages! Includes Maps!*) I've come across this: • Under the Server/CAL model, you may run unlimited instances of SQL Server 2008 Enterprise within the server farm, and move those instances freely, as long as those instances are not running on more servers than the number of licenses assigned to the server farm. • Under the Per Processor model, you effectively count the greatest number of physical processors that may support running instances of SQL Server 2008 Enterprise at any one time across the server farm and assign that number of Processor licenses And earlier: ..For SQL Server, these rule changes apply to SQL Server 2008 Enterprise only. By my reading this means that for my 3 VM's I only need 3 SQL 2008 Enterprise Processor Licenses or one copy of Server Enterprise + CALs for the cluster. By implication it means that I have to license all processors if I choose SQL 2008 Standard Processor licensing or that I have to buy a copy of SQL Server 2008 Standard for each ESX host if I choose to use CALs. *There is a map to demonstrate that a Server Farm cannot extend across an area broader than 3 timezones unless it's in the European Free Trade Area, I wasn't expecting that when I started reading it.

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  • bonding module parameters are not shown in /sys/module/bonding/parameters/

    - by c4f4t0r
    I have a server with Suse 11 sp1 kernel 2.6.32.54-0.3-default, with modinfo bonding i see all parameters, but under /sys/module/bonding/parameters/ not modinfo bonding | grep ^parm parm: max_bonds:Max number of bonded devices (int) parm: num_grat_arp:Number of gratuitous ARP packets to send on failover event (int) parm: num_unsol_na:Number of unsolicited IPv6 Neighbor Advertisements packets to send on failover event (int) parm: miimon:Link check interval in milliseconds (int) parm: updelay:Delay before considering link up, in milliseconds (int) parm: downdelay:Delay before considering link down, in milliseconds (int) parm: use_carrier:Use netif_carrier_ok (vs MII ioctls) in miimon; 0 for off, 1 for on (default) (int) parm: mode:Mode of operation : 0 for balance-rr, 1 for active-backup, 2 for balance-xor, 3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, 6 for balance-alb (charp) parm: primary:Primary network device to use (charp) parm: lacp_rate:LACPDU tx rate to request from 802.3ad partner (slow/fast) (charp) parm: ad_select:803.ad aggregation selection logic: stable (0, default), bandwidth (1), count (2) (charp) parm: xmit_hash_policy:XOR hashing method: 0 for layer 2 (default), 1 for layer 3+4 (charp) parm: arp_interval:arp interval in milliseconds (int) parm: arp_ip_target:arp targets in n.n.n.n form (array of charp) parm: arp_validate:validate src/dst of ARP probes: none (default), active, backup or all (charp) parm: fail_over_mac:For active-backup, do not set all slaves to the same MAC. none (default), active or follow (charp) in /sys/module/bonding/parameters ls -l /sys/module/bonding/parameters/ total 0 -rw-r--r-- 1 root root 4096 2013-10-17 11:22 num_grat_arp -rw-r--r-- 1 root root 4096 2013-10-17 11:22 num_unsol_na I found some of this parameters under /sys/class/net/bond0/bonding/, but when i try to change one i got the following error echo layer2+3 > /sys/class/net/bond0/bonding/xmit_hash_policy -bash: echo: write error: Operation not permitted

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  • Pulseaudio is no longer working in Debian Squeeze: 'Failed to open module "module-combine-sink": file not found'

    - by mattalexx
    I'm having a problem with pulseaudio. My machine crashed, and when I rebooted and ran pavucontrol, I got a "Connection Failed: Connection refused" dialog. When I run pulseaudio --log-level=info --log-target=stderr from the command line, I get the following output: [...] I: alsa-util.c: Error opening PCM device front:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device hw:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device iec958:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device iec958:1: No such file or directory I: alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:1 I: alsa-util.c: Error opening PCM device a52:1: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=1,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: alsa-util.c: Error opening PCM device hdmi:1: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=1,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: alsa-util.c: Error opening PCM device hdmi:1: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=1,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: alsa-util.c: Error opening PCM device hdmi:1: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=1,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: alsa-util.c: Error opening PCM device hdmi:1: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=1,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: alsa-util.c: Error opening PCM device hdmi:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device hw:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device front:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device hw:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device iec958:1: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: alsa-util.c: Error opening PCM device iec958:1: No such file or directory I: card.c: Created 0 "alsa_card.usb-FiiO_DigiHug_USB_Audio-01-Audio" I: alsa-sink.c: Successfully opened device front:1. I: alsa-sink.c: Selected mapping 'Analog Stereo' (analog-stereo). I: alsa-sink.c: Successfully enabled mmap() mode. I: alsa-sink.c: Successfully enabled timer-based scheduling mode. I: (alsa-lib)control.c: Invalid CTL front:1 I: alsa-mixer.c: Unable to attach to mixer front:1: No such file or directory I: alsa-mixer.c: Successfully attached to mixer 'hw:1' W: alsa-mixer.c: Your kernel driver is broken: it reports a volume range from 0.00 dB to 0.00 dB which makes no sense. I: module-device-restore.c: Restoring volume for sink alsa_output.usb-FiiO_DigiHug_USB_Audio-01-Audio.analog-stereo. I: sink.c: Created sink 0 "alsa_output.usb-FiiO_DigiHug_USB_Audio-01-Audio.analog-stereo" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: sink.c: alsa.resolution_bits = "16" I: sink.c: device.api = "alsa" I: sink.c: device.class = "sound" I: sink.c: alsa.class = "generic" I: sink.c: alsa.subclass = "generic-mix" I: sink.c: alsa.name = "USB Audio" I: sink.c: alsa.id = "USB Audio" I: sink.c: alsa.subdevice = "0" I: sink.c: alsa.subdevice_name = "subdevice #0" I: sink.c: alsa.device = "0" I: sink.c: alsa.card = "1" I: sink.c: alsa.card_name = "DigiHug USB Audio" I: sink.c: alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:00:1a.0-1.2, full speed" I: sink.c: alsa.driver_name = "snd_usb_audio" I: sink.c: device.bus_path = "pci-0000:00:1a.0-usb-0:1.2:1.1" I: sink.c: sysfs.path = "/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.1/sound/card1" I: sink.c: udev.id = "usb-FiiO_DigiHug_USB_Audio-01-Audio" I: sink.c: device.bus = "usb" I: sink.c: device.vendor.id = "1852" I: sink.c: device.vendor.name = "GYROCOM C&C Co., LTD" I: sink.c: device.product.id = "7022" I: sink.c: device.product.name = "DigiHug_USB_Audio" I: sink.c: device.serial = "FiiO_DigiHug_USB_Audio" I: sink.c: device.string = "front:1" I: sink.c: device.buffering.buffer_size = "352800" I: sink.c: device.buffering.fragment_size = "176400" I: sink.c: device.access_mode = "mmap+timer" I: sink.c: device.profile.name = "analog-stereo" I: sink.c: device.profile.description = "Analog Stereo" I: sink.c: device.description = "DigiHug_USB_Audio Analog Stereo" I: sink.c: alsa.mixer_name = "USB Mixer" I: sink.c: alsa.components = "USB1852:7022" I: sink.c: module-udev-detect.discovered = "1" I: sink.c: device.icon_name = "audio-card-usb" I: source.c: Created source 0 "alsa_output.usb-FiiO_DigiHug_USB_Audio-01-Audio.analog-stereo.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: source.c: device.description = "Monitor of DigiHug_USB_Audio Analog Stereo" I: source.c: device.class = "monitor" I: source.c: alsa.card = "1" I: source.c: alsa.card_name = "DigiHug USB Audio" I: source.c: alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:00:1a.0-1.2, full speed" I: source.c: alsa.driver_name = "snd_usb_audio" I: source.c: device.bus_path = "pci-0000:00:1a.0-usb-0:1.2:1.1" I: source.c: sysfs.path = "/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.1/sound/card1" I: source.c: udev.id = "usb-FiiO_DigiHug_USB_Audio-01-Audio" I: source.c: device.bus = "usb" I: source.c: device.vendor.id = "1852" I: source.c: device.vendor.name = "GYROCOM C&C Co., LTD" I: source.c: device.product.id = "7022" I: source.c: device.product.name = "DigiHug_USB_Audio" I: source.c: device.serial = "FiiO_DigiHug_USB_Audio" I: source.c: device.string = "1" I: source.c: module-udev-detect.discovered = "1" I: source.c: device.icon_name = "audio-card-usb" I: alsa-sink.c: Using 2.0 fragments of size 176400 bytes (1000.00ms), buffer size is 352800 bytes (2000.00ms) I: alsa-sink.c: Time scheduling watermark is 20.00ms I: alsa-sink.c: Hardware volume ranges from 0 to 110. I: alsa-sink.c: Using hardware volume control. Hardware dB scale not supported. I: alsa-sink.c: Using hardware mute control. I: core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5. I: alsa-sink.c: Starting playback. I: module.c: Loaded "module-alsa-card" (index: #4; argument: "device_id="1" name="usb-FiiO_DigiHug_USB_Audio-01-Audio" card_name="alsa_card.usb-FiiO_DigiHug_USB_Audio-01-Audio" tsched=yes ignore_dB=no card_properties="module-udev-detect.discovered=1""). I: module-udev-detect.c: Card /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.1/sound/card1 (alsa_card.usb-FiiO_DigiHug_USB_Audio-01-Audio) module loaded. I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device front:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device front:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device front:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device front:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device front:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device hw:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround40:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround40:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround40:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround40:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround40:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround41:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround41:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround41:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround41:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround41:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround50:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround50:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround50:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround50:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround50:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround51:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround51:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround51:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround51:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround51:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround71:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround71:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround71:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround71:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device surround71:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC2D0p' failed (-2) I: alsa-util.c: Error opening PCM device iec958:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM a52:2 I: alsa-util.c: Error opening PCM device a52:2: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=2,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:2 I: alsa-util.c: Error opening PCM device hdmi:2: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=2,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:2 I: alsa-util.c: Error opening PCM device hdmi:2: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=2,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:2 I: alsa-util.c: Error opening PCM device hdmi:2: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=2,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:2 I: alsa-util.c: Error opening PCM device hdmi:2: No such file or directory I: (alsa-lib)confmisc.c: Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=2,AES0=4,AES1=130,AES2=0,AES3=2' I: (alsa-lib)conf.c: function snd_func_refer returned error: No such file or directory I: (alsa-lib)conf.c: Evaluate error: No such file or directory I: (alsa-lib)pcm.c: Unknown PCM hdmi:2 I: alsa-util.c: Error opening PCM device hdmi:2: No such file or directory I: alsa-util.c: Device hw:2 doesn't support 44100 Hz, changed to 8000 Hz. I: alsa-util.c: Failed to set hardware parameters on plug:front:2: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:hw:2: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:iec958:2: Invalid argument I: alsa-util.c: Failed to set hardware parameters on plug:iec958:2: Invalid argument I: module-card-restore.c: Restoring profile for card alsa_card.usb-046d_08d7-01-U0x46d0x8d7. I: card.c: Created 1 "alsa_card.usb-046d_08d7-01-U0x46d0x8d7" I: module.c: Loaded "module-alsa-card" (index: #5; argument: "device_id="2" name="usb-046d_08d7-01-U0x46d0x8d7" card_name="alsa_card.usb-046d_08d7-01-U0x46d0x8d7" tsched=yes ignore_dB=no card_properties="module-udev-detect.discovered=1""). I: module-udev-detect.c: Card /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6:1.1/sound/card2 (alsa_card.usb-046d_08d7-01-U0x46d0x8d7) module loaded. I: module-udev-detect.c: Found 3 cards. I: module.c: Loaded "module-udev-detect" (index: #6; argument: ""). I: module.c: Loaded "module-esound-protocol-unix" (index: #7; argument: ""). I: module.c: Loaded "module-native-protocol-unix" (index: #8; argument: ""). I: module-default-device-restore.c: Saved default sink 'alsa_output.pci-0000_00_1b.0.analog-surround-41' not existant, not restoring default sink setting. I: module-default-device-restore.c: Saved default source 'alsa_output.pci-0000_00_1b.0.analog-surround-41.monitor' not existant, not restoring default source setting. I: module.c: Loaded "module-default-device-restore" (index: #9; argument: ""). I: module.c: Loaded "module-rescue-streams" (index: #10; argument: ""). I: module.c: Loaded "module-always-sink" (index: #11; argument: ""). I: module.c: Loaded "module-intended-roles" (index: #12; argument: ""). I: module.c: Loaded "module-suspend-on-idle" (index: #13; argument: ""). I: client.c: Created 0 "ConsoleKit Session /org/freedesktop/ConsoleKit/Session2" I: module.c: Loaded "module-console-kit" (index: #14; argument: ""). I: module.c: Loaded "module-position-event-sounds" (index: #15; argument: ""). I: module.c: Loaded "module-cork-music-on-phone" (index: #16; argument: ""). E: module.c: Failed to open module "module-combine-sink": file not found E: main.c: Module load failed. E: main.c: Failed to initialize daemon. I: module.c: Unloading "module-device-restore" (index: #0). I: module.c: Unloaded "module-device-restore" (index: #0). I: module.c: Unloading "module-stream-restore" (index: #1). I: module.c: Unloaded "module-stream-restore" (index: #1). I: module.c: Unloading "module-card-restore" (index: #2). I: module.c: Unloaded "module-card-restore" (index: #2). I: module.c: Unloading "module-augment-properties" (index: #3). I: module.c: Unloaded "module-augment-properties" (index: #3). I: module.c: Unloading "module-alsa-card" (index: #4). I: sink.c: Freeing sink 0 "alsa_output.usb-FiiO_DigiHug_USB_Audio-01-Audio.analog-stereo" I: source.c: Freeing source 0 "alsa_output.usb-FiiO_DigiHug_USB_Audio-01-Audio.analog-stereo.monitor" I: card.c: Freed 0 "alsa_card.usb-FiiO_DigiHug_USB_Audio-01-Audio" I: module.c: Unloaded "module-alsa-card" (index: #4). I: module.c: Unloading "module-alsa-card" (index: #5). I: card.c: Freed 1 "alsa_card.usb-046d_08d7-01-U0x46d0x8d7" I: module.c: Unloaded "module-alsa-card" (index: #5). I: module.c: Unloading "module-udev-detect" (index: #6). I: module.c: Unloaded "module-udev-detect" (index: #6). I: module.c: Unloading "module-esound-protocol-unix" (index: #7). I: module.c: Unloaded "module-esound-protocol-unix" (index: #7). I: module.c: Unloading "module-native-protocol-unix" (index: #8). I: module.c: Unloaded "module-native-protocol-unix" (index: #8). I: module.c: Unloading "module-default-device-restore" (index: #9). I: module.c: Unloaded "module-default-device-restore" (index: #9). I: module.c: Unloading "module-rescue-streams" (index: #10). I: module.c: Unloaded "module-rescue-streams" (index: #10). I: module.c: Unloading "module-always-sink" (index: #11). I: module.c: Unloaded "module-always-sink" (index: #11). I: module.c: Unloading "module-intended-roles" (index: #12). I: module.c: Unloaded "module-intended-roles" (index: #12). I: module.c: Unloading "module-suspend-on-idle" (index: #13). I: module.c: Unloaded "module-suspend-on-idle" (index: #13). I: module.c: Unloading "module-console-kit" (index: #14). I: client.c: Freed 0 "ConsoleKit Session /org/freedesktop/ConsoleKit/Session2" I: module.c: Unloaded "module-console-kit" (index: #14). I: module.c: Unloading "module-position-event-sounds" (index: #15). I: module.c: Unloaded "module-position-event-sounds" (index: #15). I: module.c: Unloading "module-cork-music-on-phone" (index: #16). I: module.c: Unloaded "module-cork-music-on-phone" (index: #16). I: main.c: Daemon terminated. I believe the relevant part is this: E: module.c: Failed to open module "module-combine-sink": file not found E: main.c: Module load failed. E: main.c: Failed to initialize daemon. I tried uninstalling and reinstalling pulseaudio, I tried to find a way to install module-combine-sink. Nothing worked. I'm on a Debian Squeeze 32-bit machine. What can I do to fix this?

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  • Centos CMake Does Not Install Using gcc 4.7.2

    - by Devin Dixon
    A similar problem has been reported here with no solution:https://www.centos.org/modules/newbb/print.php?form=1&topic_id=42696&forum=56&order=ASC&start=0 I've added and upgraded gcc to centos cd /etc/yum.repos.d wget http://people.centos.org/tru/devtools-1.1/devtools-1.1.repo yum --enablerepo=testing-1.1-devtools-6 install devtoolset-1.1-gcc devtoolset-1.1-gcc-c++ scl enable devtoolset-1.1 bash The result is this for my gcc [root@hhvm-build-centos cmake-2.8.11.1]# gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/opt/centos/devtoolset-1.1/root/usr/libexec/gcc/x86_64-redhat-linux/4.7.2/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --prefix=/opt/centos/devtoolset-1.1/root/usr --mandir=/opt/centos/devtoolset-1.1/root/usr/share/man --infodir=/opt/centos/devtoolset-1.1/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --disable-build-with-cxx --disable-build-poststage1-with-cxx --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,fortran,lto --enable-plugin --with-linker-hash-style=gnu --enable-initfini-array --disable-libgcj --with-ppl --with-cloog --with-mpc=/home/centos/rpm/BUILD/gcc-4.7.2-20121015/obj-x86_64-redhat-linux/mpc-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.7.2 20121015 (Red Hat 4.7.2-5) (GCC) And I tried to then install cmake through http://www.cmake.org/cmake/resources/software.html#latest But I keep running into this error: Linking CXX executable ../bin/ccmake /opt/centos/devtoolset-1.1/root/usr/libexec/gcc/x86_64-redhat-linux/4.7.2/ld: CMakeFiles/ccmake.dir/CursesDialog/cmCursesMainForm.cxx.o: undefined reference to symbol 'keypad' /opt/centos/devtoolset-1.1/root/usr/libexec/gcc/x86_64-redhat-linux/4.7.2/ld: note: 'keypad' is defined in DSO /lib64/libtinfo.so.5 so try adding it to the linker command line /lib64/libtinfo.so.5: could not read symbols: Invalid operation collect2: error: ld returned 1 exit status gmake[2]: *** [bin/ccmake] Error 1 gmake[1]: *** [Source/CMakeFiles/ccmake.dir/all] Error 2 gmake: *** [all] Error 2 The problem seems to come from the new gcc installed because it works with the default install. Is there a solution to this problem?

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  • What is the difference between Anycast and GeoDNS / GeoIP wrt HA?

    - by Riyad
    Based on the Wikipedia description of Anycast, it includes both the distribution of a domain-name-to-many-IP-mapping across many DNS servers as well as replying to clients with the most geographically close (or fastest) server. In the context of a globally distributed, highly available site like google.com (or any CDN service with many global edge locations) this sounds like the two key features one would need. DNS services like Amazon's Route53, EasyDNS and DNSMadeEasy all advertise themselves as Anycast-enabled networks. Therefore my assumption is that each of these DNS services transparently offer me those two killer features: multi-IP-to-domain mapping AND routing clients to the closest node. However, each of these services seem to separate out these two functionalities, referring to the 2nd one (routing clients to closest node) as "GeoDNS", "GeoIP" or "Global Traffic Director" and charge extra for the service. If a core tenant of an Anycast-capable system is to already do this, why is this functionality being earmarked as this extra feature? What is this "GeoDNS" feature doing that a standard Anycast DNS service won't do (according to the definition of Anycast from Wikipedia -- I understand what is being advertised, just not why it isn't implied already). I get extra-confused when a DNS service like Route53 that doesn't support this nebulous "GeoDNS" feature lists functionality like: Fast – Using a global anycast network of DNS servers around the world, Route 53 is designed to automatically route your users to the optimal location depending on network conditions. As a result, the service offers low query latency for your end users, as well as low update latency for your DNS record management needs. ... which sounds exactly like what GeoDNS is intended to do, but geographically directing clients is something they explicitly don't support it yet. Ultimately I am looking for the two following features from a DNS provider: Map multiple IP addresses to a single domain name (like google.com, amazon.com, etc. does) Utilize a DNS service that will respond to client requests for that domain with the IP address of the nearest server to the requestee. As mentioned, it seems like this is all part of an "Anycast" DNS service (all of which these services are), but the features and marketing I see from them suggest otherwise, making me think I need to learn a bit more about how DNS works before making a deployment choice. Thanks in advance for any clarifications.

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  • How to set shmall, shmmax, shmni, etc ... in general and for postgresql

    - by jpic
    I've used the documentation from PostgreSQL to set it for example this config: >>> cat /proc/meminfo MemTotal: 16345480 kB MemFree: 1770128 kB Buffers: 382184 kB Cached: 10432632 kB SwapCached: 0 kB Active: 9228324 kB Inactive: 4621264 kB Active(anon): 7019996 kB Inactive(anon): 548528 kB Active(file): 2208328 kB Inactive(file): 4072736 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 3432 kB Writeback: 0 kB AnonPages: 3034588 kB Mapped: 4243720 kB Shmem: 4533752 kB Slab: 481728 kB SReclaimable: 440712 kB SUnreclaim: 41016 kB KernelStack: 1776 kB PageTables: 39208 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 8172740 kB Committed_AS: 14935216 kB VmallocTotal: 34359738367 kB VmallocUsed: 399340 kB VmallocChunk: 34359334908 kB HardwareCorrupted: 0 kB AnonHugePages: 456704 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 12288 kB DirectMap2M: 16680960 kB >>> ipcs -l ------ Shared Memory Limits -------- max number of segments = 4096 max seg size (kbytes) = 4316816 max total shared memory (kbytes) = 4316816 min seg size (bytes) = 1 ------ Semaphore Limits -------- max number of arrays = 128 max semaphores per array = 250 max semaphores system wide = 32000 max ops per semop call = 32 semaphore max value = 32767 ------ Messages Limits -------- max queues system wide = 31918 max size of message (bytes) = 8192 default max size of queue (bytes) = 16384 sysctl.conf extract: kernel.shmall = 1079204 kernel.shmmax = 4420419584 postgresql.conf non defaults: max_connections = 60 # (change requires restart) shared_buffers = 4GB # min 128kB work_mem = 4MB # min 64kB wal_sync_method = open_sync # the default is the first option checkpoint_segments = 16 # in logfile segments, min 1, 16MB each checkpoint_completion_target = 0.9 # checkpoint target duration, 0.0 - 1.0 effective_cache_size = 6GB Is this appropriate ? If not (or not necessarily), in which case would it be appropriate ? We did note nice performance improvements with this config, how would you improve it ? How should kernel memory management parameters be set ? Can anybody explain how to really set them from the ground up ?

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  • VMWare ESX, storage over 2TB

    - by Phliplip
    Hi, First of, i'm a webdeveloper and my server experience lies in setting up FreeBSD servers for webserver. I'm working on a project for at photographer, and i'm hired to develop a new online photo ordering system - where user of course can view their photos :) They have a massive need of storage, thus we have bought a HP G6 and 8x1TB SATA HDD. Our plan is to install VMWare ESX 4.0, running multiple virtual machines; FreeBSD 8 for webserver and some windows servers. Allready done that. Then mount one big storage to the BSD, and share it through Samba to the WinServers. The raid is set up with an array of 2x 1TB to handle the VMs. And the rest is setup as 3 2x1TB to handle the photo-data. Thus 2.73TB for photo-data (the raids are 1+0). Now if we add a datastore in the ESX and add the 3 LUNs we can get a datastore of 2.74TB. But i don't se how i can add this datastore direct to the VM. Only the BSD VM needs access to this. Only way is to create a VirtualDisk, with a max of 2TB (8MB blocksize). This is because the datastore where we save the virtualdisk has a maximum filesize of 2TB. Then add it as a harddisk to the BSD VM. In the 'Add Harddisk' pane for the VM, i see an option for Raw Disk Management. I think this is to access the datastore or the raid directly. Only problem is that its greyed out! Can i access the datastorage directly from the BSD? Without creating and adding virtualdisk.

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  • Uploadify Flash Uploader and Random UPLOAD_ERR_CANT_WRITE errors

    - by dcneiner
    I am using Uploadify to provide progress bar support for file uploads on a PHP app I built. It works perfectly for a few uploads,then every few uploads it fails and the data from the $_FILES array reveals an UPLOAD_ERR_CANT_WRITE error. (Error code 7). I ran Paros proxy between my browser and the server to see the difference between a passing and failing request. The only difference was the content separator for the multi-part post which changes every time. I would conclude this was fully a server error, except with a plain jane form, I cannot reproduce the error. I am not a server guy, so please let me know what information is needed to troubleshoot this and I will update the question with those details. I did place these lines in the .htaccess, but to know avail. The site is hosted on Rackspace Cloudsites so my configuration options are limited: <IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule> php_value upload_max_filesize 10M php_value post_max_size 10M php_value max_execution_time 200 php_value max_input_time 200

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