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  • How to bring Paging File usage metric to zero?

    - by AngryHacker
    I am trying to tune a SQL Server. Per Brent Ozar's Performance Tuning Video, he says the PerfMon's Paging File:%Usage should be zero or ridiculously close to it. The average metric on my box is around 1.341% The box has 18 GB of RAM, the SQL Server is off, the Commit Charge Total is 1GB and yet the PerfMon metric is not 0. The Performance of the Task Manager states that PF Usage is 1.23GB. What should I do to better tune the box?

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  • vb6 applications in Windows server 2003

    - by Shoban
    We have some legacy applications which are running on our Win 2000 machines for a long time. There are few Win 2003 machines as well. We are planing to decommission these Win 2k server and move these applications to Windows 2003. Will there be any issues in running these vb6 applications? Should I worry about anything specific to Win 2000 and Win 2003? Can I use the compatibility mode if I have any issues?

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  • Free space on SSD (over provisioning) per disk or per partition?

    - by Horst Walter
    It is recommended to keep some percentage of an SSD free for relocation ( Is free space required on a SSD for performance? ). However, is this rule meant per partition or per disk (whole SSD)? So, if I want to keep 20% free for performance reasons, is it acceptable if one partition is 95% filled, while another is almost empty and the overall empty disk space still is 20. Or does each partition has to fulfill the rule of 20% empty space?

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  • File shares for Mac users

    - by Generic Error
    The main file shares on our network are currently hosted by old Apple XServes. I had planned to replace some of these with Windows shares as I have better hardware available but have been told this is likely to cause issues with some of our Mac users. What sort of issues am I likely to run into and what are the recommended ways of hosting general file storage in a mixed OS (Windows, OSX, occasionally linux) environment?

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  • gzip compression good or bad?

    - by WarDoGG
    I have a server that currently does a lot of processing in my application and the target users are those who have a very good internet connection. The output that is sent from the server is always text/html and we do not use any media (audio/video) only images (static site images like logo,etc). We are experiencing severe performance issues and I wonder if turning off gzip/mod_deflate on the server so that the server would avoid compressing the output. Will this cause an improvement in performance?

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  • Is a 1TB drive too big for a boot drive?

    - by CT
    Can the drive you choose to boot off affect performance? Would I receive faster boot/shutdown times if I were to choose a smaller drive? How would partitions affect performance/boot speed? Assuming all drives are the same RPM, lets say 7200.

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  • How to enable WordPress to have multiple sites without a re-direct

    - by user57039
    I'm using WordPress to manage my site and when the site does a re-direct, it slows down performance. For example, WordPress allows you a single default site, www.mycompany.com. If a user goes to mycompany.com, WP will re-direct it www.mycompany.com. Is there a way to configure WP so that it will listen on both www.mycompany.com and mycompany.com without redirects. The redirects are causing performance hits to the site.

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  • Incorrect units in iotop output

    - by brodie
    iotop is behaving strangely on a opensuse 11.2 server. It all of a sudden started reporting the output in the wrong units. Kilobytes per second are now Terabytes a second, Gigabytes now Petabytes. This server is also having stability issues, so I'm curious as to if the system is reporting things wrong to iotop is related to other issues. Any one else see similar behaviour?

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  • How to run benchmarking on MySQL?

    - by HexaHow
    My server has installed MySQL Server 5.1. I would like to run benchmarking on the MySQL, but I couldn't found sql-bench, which is Benchmark Suite provided by MySQL. The MySQL Benchmark Suite seem like complicated to be install or setup into my server. I need one can be direct setup to test the benchmark without using Perl script liked the benchmark suite from MySQL. Do anyone knows how to get the most popular benchmarking tool to measure MySQL performance? I need to measure the performance of my SQL written in ASP.Net that connecting to MySQL. I need to optimize the SQL script. It's better has a benchmarking tool where can be read my SQL in many times and return me the query result's time for comparison, etc. I just need to know the time consuming and performance for the each SQL runs in many times.

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  • CakePHP: shortcomings with indirectly associated models

    - by Dan
    I'm having some issues with dealing with indirectly associated models in cakephp. My current model setup is as follows: Deliveries hasOne License License belongsTo Delivery License hasAndBelongsToMany Product (and vice-versa) License hasAndBelongsToMany ProductOption (and vice-versa) I'm trying to save information about ALL of these models inside ONE form. The shortcomings I'm running into are the following: The form helper only seems able to see the field type one level deep. saveAll() only seems able to save records one level deep (for multiple model forms). I'm searching everywhere for the solutions to these issues, but since I'm new to CakePHP, I'm not sure what the newest methods or "correct" methods are for dealing with these issues. Any advice is much appreciated. Thank you all! EDIT: I've posted code to my failed attempt here: http://bin.cakephp.org/saved/58501

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  • NedMalloc / DlMalloc experiences

    - by Suma
    I am currently evaluating a few of scalable memory allocators, namely nedmalloc and ptmalloc (both built on top of dlmalloc), as a replacement for default malloc / new because of significant contention seen in multithreaded environment. Their published performance seems to be good, however I would like to check what are experiences of other people who have really used them. Were your performance goals satisfied? Did you experience any unexpected or hard to solve issues (like heap corruption)? If you have tried both ptmaalloc and nedmalloc, which of the two would you recommend? Why (ease of use, performance)?

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  • AnkhSVN Commits Are Very Slow

    - by jakdep
    Recently, I had to move my SVN repositories to a different server, but I am experiencing some performance problems since the move. I am using Visual Studio 2005, AnkhSVN 2.1.7819.411 and TortoiseSVN 1.6.6 on my workstation and VisualSVN Server on the server which runs Windows Server 2008. Whenever I try to commit a file or view the file history in Visual Studio it takes twenty odd seconds. I confirmed that an exception has been made for VisualSVN Server on the server's firewall, but when I disable the server's firewall the performance is back to normal (1-2 seconds for a commit). When I do a commit or check the log on a file in TortoiseSVN the performance is fine as well. To ensure that the problem was not related to the moving of the repositories, I am running these tests against a new repository which was created on the new server. So, I reckon the problem lies with AnkhSVN, but am at a loss as how to diagnose it further. Any help would be greatly appreciated.

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  • Large file upload into WSS v3

    - by Rubens Farias
    I'd built an WSSv3 application which upload files in small chunks; when every data piece arrives, I temporarly keep it into a SQL 2005 image data type field for performance reasons**. Problem come when upload ends; I need to move data from my SQL Server to Sharepoint Document Library through WSSv3 object model. Right now, I can think two approaches: SPFileCollection.Add(string, (byte[])reader[0]); // OutOfMemoryException and SPFile file = folder.Files.Add("filename", new byte[]{ }); using(Stream stream = file.OpenBinaryStream()) { // ... init vars and stuff ... while ((bytes = reader.GetBytes(0, offset, buffer, 0, BUFFER_SIZE)) 0) { stream.Write(buffer, 0, (int)bytes); // Timeout issues } file.SaveBinary(stream); } Are there any other way to complete successfully this task? ** Performance reasons: if you tries to write every chunk directly at Sharepoint, you'll note a performance degradation as file grows up (100Mb).

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  • Storing varchar(max) & varbinary(max) together - Problem?

    - by Tony Basallo
    I have an app that will have entries of both varchar(max) and varbinary(max) data types. I was considering putting these both in a separate table, together, even if only one of the two will be used at any given time. The question is whether storing them together has any impact on performance. Considering that they are stored in the heap, I'm thinking that having them together will not be a problem. However, the varchar(max) column will be probably have the text in row table option set. I couldn't find any performance testing or profiling while "googling bing," probably too specific a question? The SQL Server 2008 table looks like this: Id ParentId Version VersionDate StringContent - varchar(max) BinaryContent - varbinary(max) The app will decide which of the two columns to select for when the data is queried. The string column will much used much more frequently than the binary column - will this have any impact on performance?

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  • Why darcs instead of git?

    - by Ctrl Alt D-1337
    Using pure functional languages can have a lot of benefits over using impure imperatives but low level systems languages will generally allow you to achieve much greater performance especially when they are imperative because it allows you to specify the exact steps in how the cpu should compute the result. If there is ever list of tools where high performance is an absolute must then I would put source version controls systems right at the top of that list and git achieves this very well but performance is not it's only advantage over many other other types of version control systems anyway. The git team are handling the unsafe c code very well and I never worry about my type system or any other features of the language it is written in so why is it that there is a lot of haskell developers that must use darcs when they will only be using the finished product?

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  • Touch screens for kiosk applications

    - by Micah
    I'm developing a kiosk-style touchscreen application in Qt. Currently I'm using an Elo Touch surface acoustic wave touchmonitor which works well except for one thing: drag performance is way too poor to provide a good user experience. As this is the case for the cursor in X as well as in my application, it seems to be either the fault of X (probably not) or the touchmonitor. Since mobile platforms are able to achieve very high performance in this regard, it seems like it should be possible for vastly more powerful desktop systems. Does anybody have experience with getting good drag performance out of desktop touchmonitors? What hardware have you used? Is X to blame?

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  • Jboss logging issue - pl check this as its very urgent

    - by balaji
    Actually my issue is , our application is deployed on jboos As 4.0x, we face some issues in jboss logging.. whenever the server is restarted, jboss stops logging , and there is no update in server.log. After that it is not updating the log file. then we do touch cmd on log4j.xml, so that it creates the log files again. Please help me in fixing the issue we cant do touch everytine. we face this issue in both the nodes. I could not figure where the problem is? If any other issues, we can check the log files. If log itself is not getting updated/logged, how can we move further in analysing the issues without the recent/updated logs.. please help me..

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  • Formatting jquery timeline?

    - by Beginner
    I am using a timeline plugin from here This is my current code: <ul id="dates"> <li><a href="#1940s">1940s</a></li> <li><a href="#1950s" class="selected">1950s</a></li> <li><a href="#1960s">1960s</a></li> <li><a href="#1970s">1970s</a></li> <li><a href="#1980s">1980s</a></li> <li><a href="#1990s">1990s</a></li> <li><a href="#2000s">2000s</a></li> </ul> <ul id="issues"> <li id="1940s"><img src="/gfx/timeline/1950.jpg" /> <h1>1940's</h1> <p>Ronald.</p> </li> <li id="1950s"><img src="/gfx/timeline/1960.jpg" /> <h1>1950's</h1> <p>Eddy.</p> </li> <li id="1960s"><img src="/gfx/timeline/1970.jpg" /> <h1>1960's</h1> <p>1960s</p> </li> <li id="1970s"><img src="/gfx/timeline/1980.jpg" /> <h1>1970's</h1> <p>1970s</p> </li> <li id="1980s"><img src="/gfx/timeline/1990.jpg" /> <h1>1980's</h1> <p>1980s</p> </li> <li id="1990s"><img src="/gfx/timeline/1990.jpg" /> <h1>1990's</h1> <p>1990s</p> </li> <li id="2000s"><img src="/gfx/timeline/2000.jpg" /> <h1>2000s</h1> <p>2000s</p> </li> </ul> But I don't understand how I can make it look like this... Any assistance?thanks Current CSS: #timeline { width: 660px; height: 350px; overflow: hidden; margin: 100px auto; position: relative; background: url('Img/vline.png') left 65px repeat-x; } #dates { width: 660px; height: 60px; overflow: hidden; } #dates li { list-style: none; float: left; width: 100px; height: 50px; font-size: 24px; text-align: center; background: url('Img/hline.png') center bottom no-repeat; } #dates a { line-height: 38px; text-decoration:none; color:#999; font-size:15px; font-weight:bold; } #dates .selected { font-size: 38px; color:#000; } #issues { width: 660px; height: 350px; overflow: hidden; } #issues li { width: 660px; height: 350px; list-style: none; float: left; } #issues li img { float: right; margin: 100px 30px 10px 50px; } #issues li h1 { color: #999; font-size: 20px; margin: 20px 0; } #issues li p { font-size: 14px; margin-right: 70px; font-weight: normal; line-height: 22px; }

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  • Prefered method for looping sound flash as3

    - by Brian Heylin
    Hi there, I'm having some issues with looping a sound in flash AS3, in that when I tell the sound to loop I get a slight delay at the end/beginning of the audio. The audio is clipped correctly and will play without a gap on garage band. I know that there are issues with sound in general in flash, bugs with encodings and the inaccuracies with the SOUND_COMPLETE event (And Adobe should be embarrassed with their handling of these issues) I have tried to use the built in loop argument in the play method on the Sound class and also react on the SOUND_COMPLETE event, but both cause a delay. But has anyone come up with a technique for looping a sound without any noticeable gap?

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  • Issue tracker for web agency workflow

    - by Eirik Johansen
    We're looking into implementing an issue tracker for our web agency. The problem is that most issue trackers seem to revolve around the assumption that an issue is a bug, whereas in a web agency environment, a lot of the issues (request, or whatever you want to call them) are about changes and additions to a current web site. It also seems to me that a lot of issue trackers assume that you're working on one main software project, and uses that project as the focus of the tracker. A good issue tracker for a web agency would be one which puts each separate client and their issues at the heart of the system, making it easy for them to track and report issues. Does anyone know of a good issue tracker for the web agency workflow? What are other people using?

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  • Can NSTask safely be used outside the main thread?

    - by neoneye
    Yesterday I read somewhere that NSTask isn't thread safe and that bothers me a lot, because I'm running a NSTask within a NSThread and is so far not experiencing any threading issues with it. My code is organized like this A: main thread -> B: worker thread -> C: worker task C: The worker task is a commandline program. B: The worker thread can start/stop the worker task and send it commands. A: The main thread can send commands to the worker thread. If NSTask is supposed to be used only within the main thread, then I'm considering moving the NSTask start/stop code to the main thread, just to prevent possible threading issues. Can NSTask be used outside the main thread? And if not then what may be the threading issues with NSTask?

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  • FORMSOF Thesaurus in SQL Server

    - by Coolcoder
    Has anyone done any performance measures with this in terms of speed where there is a high number of substitutes for any given word. For instance, I want to use this to store common misspellings; expecting to have 4-10 variations of a word. <expansion> <sub>administration</sub> <sub>administraton</sub> <sub>aministraton</sub> </expansion> When you run a fulltext search, how does performance degrade with that number of variations? for instance, I assume it has to do a separate fulltext search performing an OR? Also, having say 20/30K entries in the Thesaurus xml file - does this impact performance?

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  • Database caching on a shared host

    - by tau
    Anyone have any ideas how to increase MySQL performance on a shared host? My question has less to do with overall database performance and more to do with simply retrieving user-submitted data. Currently my database will create caches at timed intervals, and then the PHP will selectively access the static files it needs. This has given me a noticeable performance boost, but I am worried about a time in which I have so much data that having to read in big files in PHP will actually be slower. I am just looking for ideas for shared hosting solutions; I am not going to get my own server anytime soon. Thanks!

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  • Sending SMTP e-mail at a high rate in .NET

    - by Martin Liversage
    I have a .NET service that processes a queue on a background thread and from the items in the queue sends out a large number of small e-mail messages at a very high rate (say 100 messages per second if that is even possible). Currently, I use SmtpClient.Send() but I'm afraid that it may hamper performance. Each call to Send() goes through a full cycle of opening the socket, performing the SMTP conversation (HELO, MAIL FROM, RCPT TO, DATA) and closing the socket. In pseudo code: for each message { open socket send HELO send MAIL FROM send RCPT TO send DATA close socket } I would think that the following pseudo code would be more optimal: open socket send HELO for each message { send MAIL FROM send RCPT TO send DATA } send QUIT close socket Should I be concerned about the performance of SmtpClient.Send() when sending e-mail at a high rate? What are my options for optimizing the performance?

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  • Slowness of Netbeans Platform Apps - how to mitigate?

    - by user559298
    Hi, We are developing a commerical application (pretty complex) in java using Netbeans IDE. We have 2 options in netbeans to create it- 1. Develop Java desktop app 2. Netbeans Platform app We have requirement that application startup and response times should be very very fast, should be modular etc. We did Proof of Technology by creating apps using both approaches mentioned above. We found Netbeans platform apps are very slow during startup and during screen navigation compared to pure Swing based desktop apps. We tried to implement suggestions provided at http://wiki.netbeans.org/Category:Performance:FAQ and in other blogs and forums to improve on speed of the app but were not successful. We feel for creating a complex desktop app Netbeans platform app would be better suited, but its not meeting our performance requirements (startup and response times, memory footprints, CPU usage guidelines etc). Can any one guide us on how to mitigate our problem of improving performance of Netbeans Platforms apps? Thanks in advance for your help. -bhan

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