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  • Cisco Nexus 5000 Vs. UCS 6100

    - by radius
    Hello, I'm a bit lost when I take a look to Nexus 5000 and UCS 6100. The description of Nexus 5000 is quite clear and I see what it does but the description of the UCS 6100 is a bit unclear for me. Could someone told me what would be the difference between a Nexus 5000 with all port at 10G and an UCS 6100 with all port at 10G ? Thanks,

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  • File creation time on Windows vs Linux

    - by Sergei
    We have following setup: mountserver - debian linux fileserver1 - Windows 2008 R2 Storage server fileserver2 - Celerra NS20 exporting CIFS share workstation - windows 7 with mapped drive to share on fileserver2 What we are doing: mounted share from fileserver1 on mountserver, e.g. /shared/fileserver1 mounted share from fileserver2 on mountserver, e.g. /shared/fileserver2 ran rsync on mountserver to sync data from fileserver1 to fileserver2.Used atime as parameter to sync data not older than X after a while tried to delete data older that Y on /shared/fileserver2. From what I see, linux stat command on mountserver returns following when quering file on /shared/fileserver2: At the same time when I open property for the same file using mapped drive connected to fileserver2,I see following for the same file: As you can see, Created date of 12 August shown in Windows Explorer is nowhere to be seen using stat command Am I missing something here?

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  • AWS VPC ELB vs. Custom Load Balancing

    - by CP510
    So I'm wondering if this is a good idea. I have a Amazon AWS VPC setup with a public and private subnets. So I all ready get the Internet Gateway and NAT. I was going to setup all my web servers (Apache2 isntances) and DB servers in the private subnet and use a Load Balancer/Reverse Proxy to pick up requests and send them into the private subnets cluster of servers. My question then, is Amazons ELB's a good use for these, or is it better to setup my own custom instance to handle the public requests and run them through the NAT using nginx or pound? I like the second option just for the sake of having a instance I can log into and check. As well as taking advantage of caching and fail2ban ddos prevention, as well as possibly using fail safes to redirect traffic. But I have no experience with their ELB's, so I thought I'd ask your opinions. Also, if you guys have an opinion on this as well, would using the second option allow me to only have 1 public IP address and be able to route SSH connections through port numbers to respective instances? Thanks in advance!

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  • exec() in BeanShell macro causes jEdit to hang when it returns non-zero exit code

    - by rossmeissl
    I have a jEdit BeanShell macro that runs my Markdown files through Maruku when I save them: if (buffer.getMode().toString().equals("markdown")) { cmd = "C:\\Ruby\\bin\\maruku.bat -o " + buffer.getDirectory() + buffer.getName().replaceAll("markdown$", "html") + " " + buffer.getPath(); exec(cmd); } This works great when the Markdown file is valid. But if I've made a mistake, jEdit just waits around forever for the exec() call to "succeed," which it never will. When this happens, I have to kill jEdit's javaw.exe process and run Maruku manually from the command line to discover the error, e.g.: E:\bp\plan\supply_chain>maruku business_plan.markdown ___________________________________________________________________________ | Maruku tells you: +--------------------------------------------------------------------------- | Could not find ref_id = "17" for md_link(["17"],"17") | Available refs are [] +--------------------------------------------------------------------------- !C:/Ruby/lib/ruby/gems/1.8/gems/maruku-0.6.0/lib/maruku/errors_management.rb:49:in `maruku_error' !C:/Ruby/lib/ruby/gems/1.8/gems/maruku-0.6.0/lib/maruku/output/to_html.rb:716:in `to_html_link' !C:/Ruby/lib/ruby/gems/1.8/gems/maruku-0.6.0/lib/maruku/output/to_html.rb:970:in `send' !C:/Ruby/lib/ruby/gems/1.8/gems/maruku-0.6.0/lib/maruku/output/to_html.rb:970:in `array_to_html' !C:/Ruby/lib/ruby/gems/1.8/gems/maruku-0.6.0/lib/maruku/output/to_html.rb:961:in `each' \___________________________________________________________________________ Not creating a link for ref_id = "17". Then I restart jEdit, fix the error, and re-save the file, at which point the macro succeeds. How can I make my macro more resilient to either die helpfully (display Maruku's error output) or, at the very least, die silently so I don't have to kill jEdit?

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  • Non Repudiation Via Microsoft's CAPI from browser?

    - by Petey B
    Is it possible to talk to Microsoft's Crypto API from a client side application in a browser? What should I know? Where should I start? I am looking to make a dummy application where a user can write a message and sign it with his private key, all through his browser using CAPI. Thanks

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  • Geocoding non-addresses: Geopy

    - by Phil Donovan
    Using geopy to geocode alcohol outlets in NZ. The problem I have is that some places do not have street addresses but are places in Google Maps. For example, plugging: Furneaux Lodge, Endeavour Inlet, Queen Charlotte Sound, Marlborough 7250 into Google Maps via the browser GUI gives me However, using that in Geopy I get a GQueryError saying this geographic location does not exist. Here is the code for geocoding: def GeoCode(address): g=geocoders.Google(domain="maps.google.co.nz") geoloc = g.geocode(address, exactly_one=False) place, (lat, lng) = geoloc[0] GeoOut = [] GeoOut.extend([place, lat, lng]) return GeoOut GeoCode("Furneaux Lodge, Endeavour Inlet, Queen Charlotte Sound, Marlboroguh 7250") Meanwhile, I notice that "Eiffel Tower" works fine. Is there away to solve this and can someone explain the difference between The Eiffel Tower and Furneaux Lodge within Google 'locations'?

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  • nginx www.domain.com vs domain.com virtualhost

    - by m33lky
    I have an http block where I include virtual hosts for the different domains hosted on the same server. For each virtual host I do: listen domain.com:80; Now, domain2.com works fine. However, when I do www.domain2.com it shows the page for domain1.com! How to properly configure nginx? Does this have something to do whether www is a CNAME or an A record? Update: It looks like you can do the following: listen 80; server_name domain.com www.domain.com;

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  • Rails' page caching vs. HTTP reverse proxy caches

    - by John Topley
    I've been catching up with the Scaling Rails screencasts. In episode 11 which covers advanced HTTP caching (using reverse proxy caches such as Varnish and Squid etc.), they recommend only considering using a reverse proxy cache once you've already exhausted the possibilities of page, action and fragment caching within your Rails application (as well as memcached etc. but that's not relevant to this question). What I can't quite understand is how using an HTTP reverse proxy cache can provide a performance boost for an application that already uses page caching. To simplify matters, let's assume that I'm talking about a single host here. This is my understanding of how both techniques work (maybe I'm wrong): With page caching the Rails process is hit initially and then generates a static HTML file that is served directly by the Web server for subsequent requests, for as long as the cache for that request is valid. If the cache has expired then Rails is hit again and the static file is regenerated with the updated content ready for the next request With an HTTP reverse proxy cache the Rails process is hit when the proxy needs to determine whether the content is stale or not. This is done using various HTTP headers such as ETag, Last-Modified etc. If the content is fresh then Rails responds to the proxy with an HTTP 304 Not Modified and the proxy serves its cached content to the browser, or even better, responds with its own HTTP 304. If the content is stale then Rails serves the updated content to the proxy which caches it and then serves it to the browser If my understanding is correct, then doesn't page caching result in less hits to the Rails process? There isn't all that back and forth to determine if the content is stale, meaning better performance than reverse proxy caching. Why might you use both techniques in conjunction?

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  • Examples of useful or non-trival dual interfaces

    - by Scott Weinstein
    Recently Erik Meijer and others have show how IObservable/IObserver is the dual of IEnumerable/IEnumerator. The fact that they are dual means that any operation on one interface is valid on the other, thus providing a theoretical foundation for the Reactive Extentions for .Net Do other dual interfaces exist? I'm interested in any example, not just .Net based.

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  • jad for blackberry non-midlet application

    - by Durgesh
    Hi Experts, I am writing a regular application for Blackberry. I want to know, is there anything similiar to JAD for pure native blackberry application (no j2me) ? If JAD is applicable to regular BB app then please guide me to use JAD for it. Kind Regards -Durgesh O Mishra

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  • 1Gigabit vs 1.25Gibabit mismatch

    - by Joel Coel
    I need to re-connect the network to a small old outbuilding that hasn't been used in several years. I have to use the existing 62.5um multi-mode fiber run. This end of the fiber is already connected. For the end in the building, I was looking at this pair: http://www.tp-link.com/products/productDetails.asp?class=switch&content=spe&pmodel=TL-SM311LM http://www.tp-link.com/products/productDetails.asp?class=&content=spe&pmodel=TL-SL2210WEB If you look at the sfp first (first link), it's listed at 1.25Gpbs. That's odd, because IIRC the fiber should really only do 1Gbps. It's also supposed to work with the switch I posted (2nd link), but the gbic port on the switch also only shows 1Gbps. What am I missing here?

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  • Cisco Pix how to add an additional block of static ip addresses for nat?

    - by Scott Szretter
    I have a pix 501 with 5 static ip addresses. My isp just gave me 5 more. I am trying to figure out how to add the new block and then how to nat/open at least one of them to an inside machine. So far, I named a new interface "intf2", ip range is 71.11.11.58 - 62 (gateway should 71.11.11.57) imgsvr is the machine I want to nat to one of the (71.11.11.59) new ip addresses. mail (.123) is an example of a machine that is mapped to the current existing 5 ip block (96.11.11.121 gate / 96.11.11.122-127) and working fine. Building configuration... : Saved : PIX Version 6.3(4) interface ethernet0 auto interface ethernet0 vlan1 logical interface ethernet1 auto nameif ethernet0 outside security0 nameif ethernet1 inside security100 nameif vlan1 intf2 security1 enable password xxxxxxxxx encrypted passwd xxxxxxxxx encrypted hostname xxxxxxxPIX domain-name xxxxxxxxxxx no fixup protocol dns fixup protocol ftp 21 fixup protocol h323 h225 1720 fixup protocol h323 ras 1718-1719 fixup protocol http 80 fixup protocol rsh 514 fixup protocol rtsp 554 fixup protocol sip 5060 fixup protocol sip udp 5060 fixup protocol skinny 2000 no fixup protocol smtp 25 fixup protocol sqlnet 1521 fixup protocol tftp 69 names ...snip... name 192.168.10.13 mail name 192.168.10.29 imgsvr object-group network vpn1 network-object mail 255.255.255.255 access-list outside_access_in permit tcp any host 96.11.11.124 eq www access-list outside_access_in permit tcp any host 96.11.11.124 eq https access-list outside_access_in permit tcp any host 96.11.11.124 eq 3389 access-list outside_access_in permit tcp any host 96.11.11.123 eq https access-list outside_access_in permit tcp any host 96.11.11.123 eq www access-list outside_access_in permit tcp any host 96.11.11.125 eq smtp access-list outside_access_in permit tcp any host 96.11.11.125 eq https access-list outside_access_in permit tcp any host 96.11.11.125 eq 10443 access-list outside_access_in permit tcp any host 96.11.11.126 eq smtp access-list outside_access_in permit tcp any host 96.11.11.126 eq https access-list outside_access_in permit tcp any host 96.11.11.126 eq 10443 access-list outside_access_in deny ip any any access-list inside_nat0_outbound permit ip 192.168.0.0 255.255.0.0 IPPool2 255.255.255.0 access-list inside_nat0_outbound permit ip 172.17.0.0 255.255.0.0 IPPool2 255.255.255.0 access-list inside_nat0_outbound permit ip 172.16.0.0 255.255.0.0 IPPool2 255.255.255.0 ...snip... access-list inside_access_in deny tcp any any eq smtp access-list inside_access_in permit ip any any pager lines 24 logging on logging buffered notifications mtu outside 1500 mtu inside 1500 ip address outside 96.11.11.122 255.255.255.248 ip address inside 192.168.10.15 255.255.255.0 ip address intf2 71.11.11.58 255.255.255.248 ip audit info action alarm ip audit attack action alarm pdm location exchange 255.255.255.255 inside pdm location mail 255.255.255.255 inside pdm location IPPool2 255.255.255.0 outside pdm location 96.11.11.122 255.255.255.255 inside pdm location 192.168.10.1 255.255.255.255 inside pdm location 192.168.10.6 255.255.255.255 inside pdm location mail-gate1 255.255.255.255 inside pdm location mail-gate2 255.255.255.255 inside pdm location imgsvr 255.255.255.255 inside pdm location 71.11.11.59 255.255.255.255 intf2 pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 interface global (outside) 2 96.11.11.123 global (intf2) 3 interface global (intf2) 4 71.11.11.59 nat (inside) 0 access-list inside_nat0_outbound nat (inside) 2 mail 255.255.255.255 0 0 nat (inside) 1 0.0.0.0 0.0.0.0 0 0 static (inside,outside) tcp 96.11.11.123 smtp mail smtp netmask 255.255.255.255 0 0 static (inside,outside) tcp 96.11.11.123 https mail https netmask 255.255.255.255 0 0 static (inside,outside) tcp 96.11.11.123 www mail www netmask 255.255.255.255 0 0 static (inside,outside) 96.11.11.124 ts netmask 255.255.255.255 0 0 static (inside,outside) 96.11.11.126 mail-gate2 netmask 255.255.255.255 0 0 static (inside,outside) 96.11.11.125 mail-gate1 netmask 255.255.255.255 0 0 access-group outside_access_in in interface outside access-group inside_access_in in interface inside route outside 0.0.0.0 0.0.0.0 96.11.11.121 1 route intf2 0.0.0.0 0.0.0.0 71.11.11.57 2 timeout xlate 0:05:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00 timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout uauth 0:05:00 absolute floodguard enable ...snip... : end [OK] Thanks!

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  • SpeedTracer NETWORK_RESOURCE_RESPONSE vs NETWORK_RESOURCE_FINISH

    - by Ben Flynn
    I'm using SpeedTracer with GoogleChrome to measure the load times of requested resources. The SpeedTracer site says: NETWORK_RESOURCE_RESPONSE "Indicates that the renderer has started receiving bits from the resource loader" NETWORK_RESOURCE_FINISH "Indictes a resource load is successful and complete." In my mind that means we would always see a network resource response (bytes are arriving) before we see a finish (all bytes received). This doesn't seem to be the case at all. Here is a sample: Request Timing @33519ms for 926ms Response Timing @34445ms for -847ms Total Timing @33519ms for 78ms I'm guessing response time isn't supposed to be negative. Can someone explain this or is this a bug? I'm using Chrome 10.0.612.3 dev with a SpeedTracer I downloaded today.

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  • wireless repeater vs wireless bridge?

    - by Kossel
    Scenario: I have a ADSL modem inside the studio which is connected with some wired/wireless devices. but when I'm in the backyard with my laptop the wireless signal is very poor, so the connection is very unstable. I have an old belkin wireless router and I read that it can be useful in this scenario. after some search, it's compatible with DD-WRT, and seems setting it both wireless repeater or wireless bridge can do the job. but which is better for speed and stability or for my purpose they are the same? wireless repeater wireless bridge

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  • TCP Server Memory management: #Connections Vs. #Requests

    - by Andrew
    Given that, there is no theoretical limit to number of concurrent TCP connections a Windows 2008 server can handle. Only thing will happen is, with each connection there will be memory consumption in server. Unfortunately, memory is not unlimited (and I want to utilize only physical memory). For example, lets say we've 2GB server memory. Now there are two extreme cases: Case 1: If we've allocated 64KB buffer for each connection (only to receive incoming request), then 32768 connections can consume all the 2GB of memory. This will not leave any memory to queue/process incoming requests from those connections. Case 2: On the other hand, lets say a single (or very few) connections continuously keeps sending request buffers (for example, video streaming from one connection to other) and server cannot process them within time, those buffers will get piled up in server and eventually will occupy most of the servers memory. And it will not leave any memory for new connection thereafter. This is the real dilemma in server design bugging me badly for last many days. If I can decide on max size of request buffer per connection and max number of requests to allow in queue per connection. Then, based on available server memory, it will then automatically set limit on max number of concurrent connections. How to decide on these limits to achieve best performance and throughput? I am just looking for perfect utilization of server resources. Are there any standard guidelines or empirical data available with someone who can share with me please.

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  • Non-latin-characters ordering in database with "order by"

    - by nybon
    I just found some strange behavior of database's "order by" clause. In string comparison, I expected some characters such as '[' and '_' are greater than latin characters such as 'i' considering their orders in the ASCII table. However, the sorting results from database's "order by" clause is different with my expectation. Here's my test: SQLite version 3.6.23 Enter ".help" for instructions Enter SQL statements terminated with a ";" sqlite> create table products(name varchar(10)); sqlite> insert into products values('ipod'); sqlite> insert into products values('iphone'); sqlite> insert into products values('[apple]'); sqlite> insert into products values('_ipad'); sqlite> select * from products order by name asc; [apple] _ipad iphone ipod This behavior is different from Java's string comparison (which cost me some time to find this issue). I can verify this in both SQLite 3.6.23 and Microsoft SQL Server 2005. I did some web search but cannot find any related documentation. Could someone shed me some light on it? Is it a SQL standard? Where can I find some information about this? Thanks in advance.

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  • Data Archiving vs not

    - by Recursion
    For the sake of data integrity, is it wiser to archive your files or just leave them unarchived. No compression is being used. My thinking is that if you leave your files unarchived, if there is some form of corruption it will only hurt a smaller number of files. Though if you archive, lets say all of your documents, if there is even the slightest corruption, the entire archive is unrecoverable. So whats the best way to keep a clean file system, but not be subject to data corruption.

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  • Self-healing Cloud vs Failover Boxes

    - by IMB
    Now that self-healing cloud servers are becoming more and more popular, I am currently torn between the decision if I should setup a HAproxy failover for my VPS or if should save myself the trouble and just put my sites on a self-healing cloud server. Does it still make sense to setup your own failover system (HAproxy + 2 or more servers for example) when self healing cloud seems like a practical solution? They seem to do the same job or am I missing something?

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  • Sphinx non-fulltext, integer only search

    - by James
    Hello guys, I've got a few tables that literally only hold integers, no "words" and for some reason Sphinx is unable to hold this data in it's library. Just returns "0 bytes" errors for these indexes. Is it possible to do this? If so, how? Below is an example from my Sphinx.conf for one that fails. source track { type = mysql sql_host = host sql_user = user sql_pass = pass sql_db = db sql_port = port sql_query = SELECT id, user, time FROM track; sql_attr_uint = user sql_attr_uint = time sql_query_info = SELECT * FROM track WHERE id=$id } index track { source = track path = /var/lib/sphinx/track docinfo = extern charset_type = utf-8 min_prefix_len = 1 enable_star = 1 }

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  • Converting non-generic List type to Generic List type in Java 1.5

    - by Shaun F
    I have a List that is guaranteed to contain just one type object. This is created by some underlying code in a library that I cannot update. I want to create a List<ObjectType> based on the incoming List object so that my calling code is talking to List<ObjectType>. What's the best way to convert the List (or any other object collection) to a List<ObjectType>.

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  • Asp.Net Login Control very slow initial connection to Non-Trusted AD Domain

    - by Eric Brown - Cal
    ASP.NET Login control is very slow making the initial connection to AD when authenticating to a different domain than the domain the web server is a member of. Problem occurs for the IIS server and when using with the Visual Studio's built in web server. It takes about 30 seconds the first time when attempting to use the control to connect against another domain. There is no trust relationship bewteen the web server's domain and the other domains (attempted connecting to several different domains). Subsequent connections execute quickly until the connection times out. Using Systernals Process Monitor to troubleshoot, there are two OpenQuery operations right before the delay to "C:\WINDOWS\asembly\GAC_MSIL\System.DirectoryServices\2.0.0.0_b03f5f7f11d50a3a\Netapi32.dll with a result NAME NOT FOUND" and right after the 30 second delay the TCP Send and TCP Recieves indicate communication begins with the AD server. Things we have tried: Impersonating an administrator on the web server in the web.config; Granting permissions to the CryptoKeys to the NetworkService and ASPNET; Specifying by IP instead of DNS name; Multiple variations of specifying the name and ldap server with domains and OU's; Local host entries; Looked for ports being blocked (SYN_SENT) with netstat -an. Nslookup resolves all the domains and systems involved correectly. TraceRt shows the Correct routes Any Idea or hints are greately appreicated.

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  • OPTIONS request vs GET in Ajax

    - by user41172
    I have a PHP/javascript app that queries and returns info using an ajax request. On every server I've used so far, this works as expected, passing an Ajax GET request to the server and returning json data. On a new install, the query fails and returns nothing-- I inspected the request and it turns out that rather than passing the query as a GET, the server is passing it as an OPTIONS request. Is there any reason for this? I have no idea why this might happen. THanks!

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