Search Results

Search found 23311 results on 933 pages for 'multiple computers'.

Page 403/933 | < Previous Page | 399 400 401 402 403 404 405 406 407 408 409 410  | Next Page >

• Database storage for high sample rate data in web app

  - by Jim

  I've got multiple sensors feeding data to my web app. Each channel is 5 samples per second and the data gets uploaded bundled together in 1 minute json messages (containing 300 samples). The data will be graphed using flot at multiple zoom levels from 1 day to 1 minute. I'm using Amazon SimpleDB and I'm currently storing the data in the 1 minute chunks that I receive it in. This works well for high zoom levels, but for full days there will be simply be too many rows to retrieve. The idea I've currently got is that every hour I can crawl through the data and collect together 300 samples for the last hour and store them in an hour Domain (table if you like). Does this sound like a reasonable solution? How have others implemented the same sort of systems?

  Read the article

• Sharing samba-folder with root access

  - by Industrial

  Hi everyone, I have a staging server in my network running Ubuntu server 10.10, being my main development area. As I need to access the files in the Apache root from other computers in the network, I have setup samba with the following settings: [www] comment = Apache root www path = /var/www writable = yes force user = root force group = root On the host computer, running Ubuntu 10.10 desktop, I am trying to mount the drive with a bash file looking like below: #!/bin/bash sudo mount -t cifs //192.168.1.5/www /media/www/ -o username=myusername,password=mypassword,rw,iocharset=utf8,file_mode=0777,dir_mode=0777 What happens is that I get mount error(13): Permission denied Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) thrown in my face whilst trying to execute the mount. I've done exactly the same, with exactly the same smb.conf & mount-bash file on another computer in my network, but this just wont work. What am I doing wrong? I am running out of ideas.

  Read the article

• Using Entity Framework, how do I specify a sort on a navagation property?

  - by Jared

  I have two tables: [Category], [Item]. They are connected by a join table: [CategoryAndItem]. It has two primary key fields: [CategoryKey], [ItemKey]. Foreign keys exist appropriately and Entity has no problem pulling this in and creating the correct navigation properties that connect the entity objects. Basically each category can have multiple items, and items can be in multiple categories. The problem is that the order of items is specified per category, so that a particular item might be third in one category but fifth in another. In the past, I have added a [Sequence] field to the join table and modified the stored procedure to handle it. But since Entity is replacing my stored procedures, I need to figure out how to make Entity handle the sequence. Any suggestions?

  Read the article

• ssh tunnel to a remote CUPS server

  - by drevicko

  There is a CUPS server beyond a firewall and I'd like to use it's printers. I have ssh access to computers that can access the CUPS server, and can get at the servers web interface by forwarding say port 1631. I cannot forward port 631 as I've not got root access to anything on the servers network. In Ubuntu's 'Printing' control panel, I can enter the address of a server, but I've not been able to connect through the forwarded port (localhost:1631, which is forwarded to the remote CUPS server's 631 port). Any ideas?

  Read the article

• Wireless Connection Troubles

  - by James

  I just recently switched from Windows 7 over to Ubuntu 12.04 and have been experiencing some issues connecting to my home's wireless network. The only way I can get it to connect to the network is by disabling IPv4 and IPv6 settings. Even then while it says its connected to the network (3 bars), I'm unable to access the Internet. It connected for a little while after I first installed Ubuntu, but after the first reboot I haven't been able to access the web at all. I have very basic knowledge when it comes to computers and barely any when dealing with Ubuntu and Linux. I'm very happy with Ubuntu apart from this one issue, as before my computer was overheating and crashing, I've yet to experience any of those problems since installing Ubuntu. The information I can give may be very limited since I'm having to use my cell phone to figure out the solution to this. Any help would be greatly appreciated. Thanks in advance!

  Read the article

• Clustering SQL Server

  - by user265536

  Can we combine multiple installations of Microsoft SQL Server 2005 or 2008 to act as a single database cluster?

  Read the article

• How to deal with many to many relationships with NSFetchedResultsController?

  - by Phil Yates

  OK so I have two entities in my data model (let's say entityA and entityB), both of these entities have a to-many relationship to each other. I have setup a NSFetchedResultsController to fetch a bunch of entityA. Now I'm trying to have the section names for the tableview be the title of entityB. sectionNameKeyPath:@"entityB.title" Now this causes a problem, where by the section name returned from that relationship appears to be ({title1}) or ({title1,title2...titleN}) obviously depending on how many different entityB's are involved. This doesn't look great in a tableview and doesn't group the objects as I would like. What I would like is a section per entityB title with entityA appearing under each section, under multiple sections if necessary. I'm at a loss as how I am supposed to achieve this whether I need to update the predicate to get the entity to appear multiple times or whether I need to update the section and header functions to do some processing as the controller loops through the objects. Any help is appreciated :) Thanks

  Read the article

• Oracle table fragmentation

  - by Manish Mathai

  How do I fragment a table so that it is distributed over multiple oracle 9i servers.

  Read the article

• google docs + web app

  - by King

  Hi Guys I am trying to create a web app to share docs with all editor features (just like google docs). My main requirements for this app are as follows: 1. Should have all editor features (can be done using open office api, google docs api, Microsoft office web apps api) 2. Should be shared between multiple users and can be edited by multiple users and other sync features (can be done using google docs api, Microsoft office web apps) 3. Can save the document created and edited on my own/ custom server addr. (Which api can support this??? I know open office can support this) Guys can you please suggest me one api which can be used to do all the above. Also please suggest if I am underestimating any API above regarding any functionality that i thing is not supported. Thanks King

  Read the article

• Is this a correct Interlocked synchronization design?

  - by Dan Bryant

  I have a system that takes Samples. I have multiple client threads in the application that are interested in these Samples, but the actual process of taking a Sample can only occur in one context. It's fast enough that it's okay for it to block the calling process until Sampling is done, but slow enough that I don't want multiple threads piling up requests. I came up with this design (stripped down to minimal details): public class Sample { private static Sample _lastSample; private static int _isSampling; public static Sample TakeSample(AutomationManager automation) { //Only start sampling if not already sampling in some other context if (Interlocked.CompareExchange(ref _isSampling, 0, 1) == 0) { try { Sample sample = new Sample(); sample.PerformSampling(automation); _lastSample = sample; } finally { //We're done sampling _isSampling = 0; } } return _lastSample; } private void PerformSampling(AutomationManager automation) { //Lots of stuff going on that shouldn't be run in more than one context at the same time } } Is this safe for use in the scenario I described?

  Read the article

• How to Remotely Shut Down or Restart Windows PCs

  - by Chris Hoffman

  Windows includes Shutdown.exe, a simple utility for remotely shutting down or restarting Windows computers on your local network. To use Shutdown.exe, you must first configure the PCs you want to shut down or restart remotely. Once you’ve configured the PCs, you can use a graphical user interface or command to restart the PCs from another Windows system. You can even remotely shut down or restart the PCs from a Linux system. How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

  Read the article

• What is the best tool to sync browser passwords and bookmarks?

  - by jgbelacqua

  Sadly, everything I've tried so far has been painful to manage between two computers, (even between different browsers on the same computer). So, right now I have different aggregations of bookmarks passwords in xmarks, delicious, google bookmarks, firefox sync, text files, and in figaro password manager (fpm2). I've also tried to use bindwood in the past. What I would like to do is merge all bookmarks and passwords into some solution that actually works either with tools available under Ubuntu, or with a browser-based tool (addon/plugin/extension) which works between between google-chrome/chromium, and firefox. It would be ideal if there was an ability to send and store passwords encrypted (if not on my own server). Whatever the method, I need the ability to have import from existing sources. (It doesn't have to be pretty, just repeatable.) It's possible that some things I've ruled out are now workable (e.g., xmarks broke for me at one point because I hit their bookmark limit for the server/account, and bindwood, firefox sync were firefox only).

  Read the article

• How can I run Tellme more software on Ubuntu 14.04 LTS?

  - by Alex Walker

  I'm new to Ubuntu and I've been loving it so far, I have it on my 2 computers and I think everyone should try it. I run an English Laboratory in a University (Our PC's are old and slow) so I want to install Ubuntu on all of them so the students can have a better experience here, the problem is tha we NEED Tell me more Software which I believe it's only for windiws. How can I install it in ubuntu? do I need wine or a virtual machine with Windows? please help! and thank you so much!!

  Read the article

• Are there any design-patterns specifically useful for game-development?

  - by Baelnorn

  This question's been bugging me for a long time. I've always wondered how game developers were solving certain problems or situations that are quite common in certain genres. For example, how would one implement the quests of a typical role-playing game (e.g. BG or TES)? Or how would you implement weapons with multiple stacking effects in a first-person shooter (e.g. the Shrink-gun or Freezer from DN3D)? How would you implement multiple choice options with a possibly intricate decision tree leading to several different outcomes (e.g. the mission trees in WC)? Are there any examples or other resources for that? Blogs? Books? Sourcecode?

  Read the article

• More Sessions At Central Coast Code Camp, Ruby/Cloud Computing

    Should Your Application Run In The Cloud Im back and sitting in Steve Evans Session, Should Your Application Run In The Cloud.  Hes now explaining how computers, since the stone age,... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• ethernet doesn't work

  - by Grig Tanasescu

  I know that it may look pretty stupid, but that's it. I have a ethernet connection with my mom's computer, and is her's who's the source or anyway it is called. I'm new at linux, but i had before linux mint 13 and the ethernet didn't work 'till a friend went to network settings-options he clicked "add" somewhere and and introduced some numbers, after he looked somewhere in my mom's computer. I've tried neither linux nor ethernet until now. Please help and sorry for my english. P.S. I'm just 13 and I don't know much about computers so, please, talk to me as you would with a completely idiot. Thanks

  Read the article

• restful way for deleting a bunch of items

  - by keisimone

  In wiki article for REST it is indicated that if you use http://example.com/resources DELETE, that means you are deleting the entire collection. If you use http://example.com/resources/7HOU57Y DELETE, that means you are deleting that element. I am doing a WEBSITE, note NOT WEB SERVICE. I have a list that has 1 checkbox for each item on the list. Once i select multiple items for deletion, i will allow users to press a button called DELETE SELECTION. If user presses the button, a js dialog box will popup asking user to confirm the deletion. if user confirms, all the items are deleted. So how should i cater for deleting multiple items in a RESTFUL way? NOTE, currently for DELETE in a webpage, what i do is i use FORM tag with POST as action but include a _method with the value DELETE since this is what was indicated by others in SO on how to do RESTful delete for webpage.

  Read the article

• Rails Globalize2

  - by toby

  How can i implement multiple language translation fields in one form with globalize2?

  Read the article

• How to leverage Spring Integration in a real-world JMS distributed architecture?

  - by ngeek

  For the following scenario I am looking for your advices and tips on best practices: In a distributed (mainly Java-based) system with: many (different) client applications (web-app, command-line tools, REST API) a central JMS message broker (currently in favor of using ActiveMQ) multiple stand-alone processing nodes (running on multiple remote machines, computing expensive operations of different types as specified by the JMS message payload) How would one best apply the JMS support provided by the Spring Integration framework to decouple the clients from the worker nodes? When reading through the reference documentation and some very first experiments it looks like the configuration of an JMS inbound adapter inherently require to use a subscriber, which in a decoupled scenario does not exist. Small side note: communication should happen via JMS text messages (using a JSON data structure for future extensibility).

  Read the article

• "Operating system not found" after upgrading to 13.10

  - by Hongbo Zhu

  I own a Thinkpad X121e and I upgraded its Ubuntu from 13.04 64bit to 13.10 64bit using the Update Manager. When the upgrade process suggested to restart the system, I restarted the computer and now it says "Operating system not found" after a very brief splash screen. The splash screen says something like (too brief to see everything): Intel UNDI, PXE-2.0 ... For Atheros ethernet Controller ... Check cable connection! PXE-MOF: Exiting INTEL PXE ROM I prepared a startup USB disk using Ubuntu 13.10. I tried the startup USB and it works very well on other computers. So I changed the booting order of X121e and tried all three USB slots, all said "Operating System not found" without any splash screen. I also tried using startup USB with 12.04 LTS. Same results. I do not really want to reinstall the system now. Any hints on how to proceed?

  Read the article

• New computer - AMD with which mobo? [closed]

  - by RhZ

  I need to buy new computers for the office, all running ubuntu 10.04 or 11.10, whichever works. I am looking at a asus mobo with the AMD870 northbridge and 850 sounthbridge. Can anyone tell me if that is buggy or not? And with maybe an Athlon II X4 640 processor. At home I am running an asus mobo with AMD880/SB850 at home, which is good, although the on board ATI video card was buggy, I put a nvida card in as well and its great now. But for the office I want to save cost, don't need a kick-ill system. Still, I need the machines to be fast and look good, don't want to skimp on performance. Can anyone provide me with some advice about this? I will buy a custom machine, not from one of the big manufacturers. Thanks! :-)

  Read the article

• Is it possible to have an out-of-process COM server where a separate O/S process is used for each ob

  - by Tom Williams

  I have a legacy C++ "solution engine" that I have already wrapped as an in-process COM object for use by client applications that only require a single "solution engine". However I now have a client application that requires multiple "solution engines". Unfortunately the underlying legacy code has enough global data, singletons and threading horrors that given available resources it isn't possible to have multiple instances of it in-process simultaneously. What I am hoping is that some kind soul can tell me of some COM magic where with the flip of a couple of registry settings it is possible to have a separate out-of-process COM server (separate operating system process) for each instance of the COM object requested. Am I in luck?

  Read the article

• Are concurrency issues possible when using the WCF Service Behavoir attribute set to ConcurrencyMode

  - by Brandon Linton

  We have a WCF service that makes a good deal of transactional NHibernate calls. Occasionally we were seeing SQL timeouts, even though the calls were updating different rows and the tables were set to row level locking. After digging into the logs, it looks like different threads were entering the same point in the code (our transaction using block), and an update was hanging on commit. It didn't make sense, though, because we believed that the following service class attribute was forcing a unique execution thread per service call: [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, InstanceContextMode = InstanceContextMode.PerCall)] We recently changed the concurrency mode to ConcurrencyMode.Single and haven't yet run into any issues, but the bug was very difficult to reproduce (if anyone has any thoughts on flushing a bug like that out, let me know!). Anyway, that all brings me to my question: shouldn't an InstanceContextMode of PerCall enforce thread-safety within the service, even if the ConcurrencyMode is set to multiple? How would it be possible for two calls to be serviced by the same service instance? Thanks!

  Read the article

• logging problems for swing applications

  - by mengmenger

  what kind of logging frame work or API to use for swing applications which is used by multiple users in Unix. Is it possible to log all verbose/exception in one file per day or event one user one file per day? Since the user can open the same application with multiple instance. I also have another solution is to save the exceptions into database. But if I miss the excetpions, those will not be saved in DB. anybody has better solutions? Thank you very much!

  Read the article

• I/O errors are reported when I try to install Ubuntu, but the SMART data is good. Is my hard disk dying?

  - by James

  When I try to install linux, it tells me there is an input output error on dev sda. I have tried both Ubuntu and Mint on two different computers. So that narrows it down to the hdd. After hours of googling and trying different things I tried making the hardrive ext4 with gparted but that comes up with an error. This makes me think that the hdd is bad. There are a few reasons I think the hdd isn't bad. I can use the hdd in windows fully. Windows and gparted disk health checks both say it is fine. Its SMART data is all good. So... help?

  Read the article

< Previous Page | 399 400 401 402 403 404 405 406 407 408 409 410  | Next Page >