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  • Solr performance (tomcat) - High load

    - by Ward Loockx
    I'm relatively new to solr. I have a production site running on a VPS, but now I'm having serious load issues. I don't know where to start in order to get the load down... VPS specs (linode.com 512) 512 MB RAM 4 CPU (1x priority) Looks like my solr server (tomcat) is using a lot of CPU power You can find my solrconfig.xml on http://pastebin.com/qdfi8Med and my schema.xml on http://pastebin.com/rRusDP8b I've tried to increaese the cache size, but this didn't do anything on the load. You can see the stats page below. EDIT - Because the screenshot was unclear, I took smaller screenshots if what (I think) is important. Dismax query handler stats Caches stats Thanks for the help!

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  • How many xml http requests is too much for a pc to handle?

    - by Uri
    I'm running mediawiki on an apache on a regular pc running vista (don't know the specific specs, but I'm guessing at least duo core 2 2 giga hertz processor, broadband connection (500 kb/s at least, probably 1 mega). I want to use the MediaWiki api to send a lot of requests to this server. Most of the time the requests will be sent through LAN (but sometimes through the internet). I'm talking thousands of requests every few seconds at worst case. (A lot of these requests may repeat themselves, I guess some sort of cache would help) Will the server handle this, or do I need a stronger/dedicated computer? (I'm not looking for specific yes/no, but just want to get an idea as to what configuration of computer will support how many request per second) Thanks

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  • Will readyboost speed up a secondary partion or harddrive?

    - by Sebastian
    I'm building a new computer and plan on using a few spare USB sticks with readyboost to cache disk writes. I'll be running Windows 7 Enterprise SP1 x64 I have a single 2 TB disk, and plan to make a partition for windows (100 GB) and use the rest for data. I know Readyboost will work nicely for the C drive, but am unable to find any information on whether it will accelerate a second drive or partition. Just to clarify, I'm NOT trying to use the harddrive instead of the usb sticks. I'm trying to speed up the second partition using the USB sticks So, will readyboost work for a secondary partion or harddrive?

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  • Inconsistent slow DB connect times

    - by mcryan
    I have an app that shows significantly increased load times every 5 minutes. We use New Relic and I've been able to identify that every slow request is due to our DB connect functions. I've looked through our frontend servers and db servers and have ensured that there are no cronjobs running every 5 minutes - though the increase comes every 5 minutes without fail. I feel like I've tried everything I can to isolate this but I'm not having any luck. It is not coming from a cronjob, there is no cache expiring every 5 minutes, etc. What else could I check, and does anyone know of anything that could cause this sort of behavior? For what it's worth - our stack includes Apache, PHP, MySQL, Varnish and Memcache. SQL and memcache are running on dedicated servers and we have a number of frontend servers behind a load balancer, each running Apache and Varnish. Spike every 5 minutes: And it's always db connect (in red) taking up all of the time:

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  • Query decendants in XML to Linq

    - by Gordon
    I have the following xml data: <portfolio> <item> <title>Site</title> <description>Site.com is a </description> <url>http://www.site.com</url> <photos> <photo url="http://www.site.com/site/thumbnail.png" thumbnail="true" description="Main" /> <photo url="http://www.site.com/site/1.png" thumbnail="false" description="Main" /> </photos> </item> </portfolio> In c# I am using the following link query: List list = new List(); XDocument xmlDoc = XDocument.Load(HttpContext.Current.Server.MapPath("~/app_data/portfolio.xml")); list = (from portfolio in xmlDoc.Descendants("item") select new PortfolioItem() { Title = portfolio.Element("title").Value, Description = portfolio.Element("description").Value, Url = portfolio.Element("url").Value }).ToList(); How do I go about querying the photos node? In the PortfolioItem class I have a property: List Photos {get;set;} Any ideas would be greatly appreciated!

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  • How to maximize parallel download from S3

    - by StCee
    I got a lot of images to load from Amazon S3 on a single page, and sometimes it takes quite some time to load all the images. I heard that splitting the images to load from different sub-domains would help parallel downloads, however what is the actual implementation on that? While it is easy to split for sub-domains like static,image, etc; Should I make like 10 sub-domains (image1, image2...) to load say 100 images? Or is there some clever ways to do? (By the way I am considering using memcache to cache the S3images; I am not sure if it is possible. I would be grateful for any further comments. Thanks a lot!

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  • nginx serves broken characters

    - by Andrew123321
    I have nginx 1.2.0-1 on debian 6.0.5. I have an empty file (let's say test.css). I add A and newline, works fine, B and newline, works fine,... D, works fine. I add E and I got three broken characters ("???"). When the file has got more content nginx would usually "cache" it and then output the cached file minus some characters plus some of these broken characters. Do you have any idea how to deal with this? Thank you

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  • Problem with the hosts file in Windows XP

    - by waldev
    I have a computer with Windows XP SP2 with a weird problem. The hosts file doesn't work. No matter what I do, adding or removing entries in the file doesn't make any difference, pinging the added names times out. I tried flushing the DNS cache (using ipconfig /flushdns) but that didn't work, I even tried to restart the DNS client service but that made no difference too. Removing entries also has no effect, I ping the names and I get a reply. Help!!! Edit: Thanks for your answer guys, but the problem is more complicated than this. It seems I'll have to reinstall Windows.

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  • Has anyone seen an HTTP 500 error when HTTPS traffic going through Pound Proxy forwards to an HTTP page?

    - by scientastic
    We have Varnish as our load balancer and reverse proxy cache for normal HTTP traffic. For HTTPS traffic, we use Pound proxy to unwrap the SSL and forward to Varnish, which then forwards to the back-end servers. This is used for our "checkout" process to encrypt credit card info in transition. However, on the last stage of checkout, users are always getting an HTTP 500 (Internal Server) error. It doesn't seem to be due to our back-end app server, by all tests I've tried. Does anyone know anything about how that transition works-- the transition back from HTTPS to HTTP and the interaction between Pound and Varnish-- and why it might cause 500 errors?

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  • What if any free video player for windows can I set a custom frame buffer for streaming over the wifi?

    - by user268883
    I currently use DAUM PLayer (Pot Player) but I have problems streaming video to my laptop unless it is plugged into the network. An easy fix (so I thought) would be to find a player were I could adjust the cache / buffer so say 5 mins+ is read to the local Hdrive and then played from there... I can not work out how to do this in any player I have VLC, MPCHC and DAUM installed. All I want to do is increase the file buffer so X amount of the networkfile is copied to the local drive and then played... so all stuttering is stopped? How do I do this?

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  • Mysql showing some high spikes

    - by user111196
    We one mysql server suddenly the access to it becomes slow of out sudden. So I read some place they said maybe due to var size is it? I am not too sure any idea how to check the root cause of it. The cpu is like nearly 150%. Any indication on it. I have tried this so far. du -sh * 4.0K account 67M cache 4.0K cvs 16K db 8.0K empty 4.0K games 4.0K gdm 148G lib 4.0K local 16K lock 624M log 0 mail 4.0K nis 4.0K opt 4.0K preserve 400K run 298M spool 4.0K tmp 359M www 12K yp

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  • Some Domain Clients unable to access certain websites

    - by Shaunie
    I have a small domain around 20 clients with a 2003 R2 SP2 DC. Most of my clients can browse the internet freely and dont have a problem. However a couple are reporting problems accessing certain sites. IE: Hotmail, skyscanner, bbc news They can browse the sites sometimes then other times they get 408\409 errors. other machines in the domain can access these sites. I have cleared out dns cache on these machines modified external dns servers on the DC still to no avail. The main issue is the person not able to access skyscanner uses it several times a day to book flights for employess going on leave or returning to work. both clients are running XP SP3 though one machine is getting change for one running win7 shortly. Any advice greatly appreciated. thanks

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  • DNSCache excesive memory usage Windows Server 2008 R2

    - by MikeT
    We are having an issue with the dnscache service where its memory usage is becoming excessive (~6GB) after a week or two. Restarting the service frees this memory but performing ipconfig /flushdns does not, an ipconfig /displaydns shows aprox 15-20 entries in the cache. We have checked and there appears to be aprox 150 DNS queries per second taking place but I would not expect this to have the effect of causing this memory issue. I have tried to search MSDN for hotfixes or bug reports but I could only find a reference to a memory leak in windows 2003. can anyone suggest how to proceed.

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  • URL Rewrite ASP.net

    - by wandos
    i have an asp.net website where i need to use URL re-write so i have written an HTTP module and i have implemented it and it works correctly the only problem is when the page redirect to its corresponding address the images and the styles are not loaded. here is the http module: // Your BeginRequest event handler. private void Application_BeginRequest(Object source, EventArgs e) { HttpApplication application = (HttpApplication)source; string URL = application.Request.Url.ToString(); //int pid = Convert.ToInt32(application.Request.QueryString["pid"]); if ((URL.ToLower().Contains(".aspx")) || (URL.ToLower().Contains(".js")) || (URL.ToLower().Contains(".css")) || (URL.ToLower().Contains(".gif")) || (URL.ToLower().Contains(".png")) || (URL.ToLower().Contains(".jpeg")) || (URL.ToLower().Contains(".jpe")) || (URL.ToLower().Contains(".jpg")) || (URL.ToLower().Contains(".ashx"))) return; else { string mname = URL.Substring(URL.LastIndexOf("/") + 1).ToString(); Merchand ms = merchantDB.GetMerchant(mname); HttpContext context = application.Context; if (ms != null) { string url = "~/pages/Merchant.aspx?mid=" + ms.MerchandID + "&catid=" + ms.MainCategory + "&subcatid=0"; context.RewritePath(VirtualPathUtility.ToAppRelative(url)); } else { //(""); string url = "~/pages/default.aspx"; context.RewritePath(VirtualPathUtility.ToAppRelative(url)); } } } when i open the page from it normal URL it opens fine, but when i use the url rewrite it open but with out images or styles. when i open firebug i get an error that the css and the javascript are not found

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  • Missing Desktop Icon Labels in Windows 7

    - by Buzzedword
    Hey guys. Big problem that has been bothering me to no end. My desktop icons have been stripped of their icon labels, and nothing seems to be recovering them. To be clear, when I attempt to rename, the text shows up, and when I view my desktop in an explorer window, all text is preserved. System restore to a stock state will not recover. No changes have been done to the computer-- no installs or downloads for two weeks prior to this error. Rebuilt the icon cache, still no response. Anybody know what can be causing this problem? Screenie below. Thanks in advance. OS: Windows 7 Enterprise 64-bit Profile: Local, non-roaming Image: http://img688.imageshack.us/img688/5152/capturemr.png

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  • Understanding RAM usage on Linux

    - by stebbo
    I'm completely new to Linux and I'm just trying to understand where all my RAM is going. I've got a pretty fresh install of Xubuntu running as a VMWare guest, and I've given it 1.5GB RAM to play with. After only running two apps starting up Tomcat servers and also running Firefox, I've got hardly anything left. 160MB according to free -m. Looking at the output from Top, I see Java appearing twice, each stealing about 1/2 Gig resident memory. Both Tomcat instances use the same jdk, I would have thought I'd only see Java there once. What's the story? I had a screenshot but unfortunately couldn't post it being under 10 rep. Update The free -m output requested: total used free shared buffers cached Mem: 1419 1380 39 0 8 111 -/+ buffers/cache: 1259 160 Swap: 509 68 441 Top (coming)

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  • How Do I enable Safe Asynchronous Write With NFS?

    - by Joe Swanson
    The NFSv3 documentation talks alot about the concept of "safe asynchronous writes" (last bullet of A1): http://nfs.sourceforge.net/#section_a This is NOT referring to the sync/async option in the server exports file (as the async option in the exports file is NOT safe). As I understand it, safe asynchronous writes is a hybrid between the sync/async exports option. It allows for a server to reply back without flushing to stable storage immediately, but the client will not remove the write request from cache until it has received confirmation that it has been committed to stable storage (and also detects if the server looses power/reboots). I believe that this option is set on the client side, but I have not come across any documentation that shows how to do this. Any ideas?

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  • Monitoring disk block access in Linux

    - by VoidPointer
    Is there a way to gather statistics about blocks being accessed on a disk? I have a scenario where a task is both memory and I/O intensive and I need to find a good balance as to how much of the available RAM I can assign to the process and how much I should leave for the system for building its I/O cache for the block device being used. I suspect that most of the I/O that is currently happening is accessing a rather small subset of the device and that performance could be optimized by increasing the RAM that is available for I/O buffering. Ideally, I would be able to create something like a "heat-map" that shows me which parts of the disk are accessed most of the time.

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  • Path erased in Debian

    - by Lyon83
    I'm trying to deploy a rails app in Debian, using Apache/Passenger. I was trying to fox a problem with some GEMs and in the process I put executed this in console: export PATH=/var/lib/gems/1.8/bin/:${vendor/cache} Now my path environmental variable is gone, or at least its content. My server is running under Debian 6. Is there a way to recover my path info? Or at least can someone point me where to find the file where that variable i s stored? Some help please. This is a BIG problem for me. Thanks in advance!

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  • strange memory usage pattern on windows server 2008 on login through remote desktop..

    - by headsling
    I'm running Windows Server 2008 Datacenter Service Pack 2 on a VM Ware instance with 10Gb ram allocated. I'm not running IIS or SQL Server. Under 'normal' conditions, the machine uses ~5.5Gb of memory. However, when I login to the server through remote desktop, the memory usage slowly climbs up to 9.8Gb of memory in use. After several minutes the memory slowly creeps back down to the 5.5Gb mark. I've tried killing all the processes associated with my login, on login, barring the taskmanager without success, and I can't see any process that is growing in memory usage when the memory is increasing. I'm assuming this is some system level cache that is growing / shrinking... but why is it doing this?

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  • What components should I upgrade to squeeze more life of my pc? [on hold]

    - by Jared
    Hi my current specs are CPU: Intel Core i5 750 2.66 GHz, Socket 1156 Motherboard: Asus P7P55 LX Motherboard, Socket 1156, 4xDIMM DDR3, 2xPCIe-16, 3xPCI, 2xPCIe-1, 14xUSB2, Audio, 1xATA, 6xSATA, RAID, ATX HDD: Seagate Barracuda 7200.11 ST31500341AS Hard Disk Drive, 1500GB, 7200rpm, 32MB Cache, SATA-2 RAM: G.Skill Ripjaw F3-12800CL8D-4GBRM, 2x2GB, DDR3-1600, PC3-12800, CL8, DIMM Video: MSI Radeon 5850 R5850-PM2D1G Video Card, 1024MB, DDR5, PCIe-16, DVI, CrossFire, HDMI PSU: Vantec ION2, 620W ATX PSU, SLI Ready, Black Firstly I know it badly needs an SSD, for which I'm thinking of the Samsung 250gb 840 EVO series. The ram could do with another 4GB, for which I am thinking of replacing the 2x2GB for 2x4GB of the same type. My video card is struggling with the latest releases, so vitally should I ditch the video card and go for something newer (ATI 7850, GTX 660?) or try and get another 5850 for crossfire support? Bearing in mind 5850's are sort of hard to come buy now as they are not stocked in shops usually, which means they have to be bought second hand.

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  • Why OS X use swap when there is lots of "inactive memory"?

    - by Balchev
    I am using OS X from few months (Lion and now Mountain Lion). I have 8 GB on my mini and almost daily now it get close to that. On Windows 7 machine with 8 GB I never had that kind of problem. Anyway, I read over the net, that the inactive memory is app cache of the programs that are recently closed and can be used for faster reopening.And this inactive memory can be released to a new app if needed. It is not released. Instead OS X starts swapping. So my question is why OS X use swap when there is lots of "inactive memory"? Here a screen that shows what I mean: I really hope there is a away to make OS X to use those 2.69 GB before start swapping.I really do.

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  • mongodb eating 48G in 1min

    - by ledy
    In mongodb i work with this collection: Size 55.93g Data Size 39.82g Storage Size 41.08g Extents 53 Indexes 4 Index Size 9.64g It takes few seconds of mongdb being up with this single collection and all 48GB RAM on the dedicated server are gone. That's worse because there is also a mysqld+nginx/fcgi on this machine which should be allowed to use at least 24GB together. I.e. remaining 24GB, enough for the mongod! However, it does not share in a fair way. Everybody says that the memory for mongod is managed by OS and releases unneccessary space for other processes if they demand RAM. On my machine it is not releasing RAM. What's wrong? free total used free shared buffers cached` Mem: 49559136 49403908 155228 0 57284 47247564 -/+ buffers/cache: 2099060 47460076 Swap: 8008392 164 8008228

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  • Jquery mobile ajax request not working after 4-5 request is made in Android

    - by Coder_sLaY
    I am developing an application using jQuery mobile 1.1.0 RC1 and phonegap 1.5.0 I have a single HTML page which contains all the pages in it as a div(through data-role="page") here is my code <!DOCTYPE HTML> <html> <head> <title>Index Page</title> <!-- Adding viewport --> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <!-- Adding Phonegap scripts --> <script type="text/javascript" charset="utf-8" src="cordova/cordova-1.5.0.js"></script> <!-- Adding jQuery mobile and jQuery scripts & CSS --> <script type="text/javascript" src="jquery/jquery-1.7.1.min.js"></script> <link rel="stylesheet" href="jquerymobile/jquery.mobile-1.1.0-rc.1.min.css" /> <script type="text/javascript" src="jquery/jquery.validate.min.js"></script> <script type="text/javascript" src="jquerymobile/jquery.mobile-1.1.0-rc.1.min.js"></script> <link rel="stylesheet" href="css/colors.css"> <script type="text/javascript"> function page1(){ $.mobile.changePage("#page2", { transition : "slide" }); } function page2(){ $.mobile.changePage("#page1", { transition : "slide" }); } $("#page1").live("pageshow", function(e) { $.ajax({ type : 'GET', cache : false, url : "http://192.168.1.198:9051/something.xml" + "?time=" + Date.now(), data : { key : "value" }, dataType : "xml", success : function(xml) { console.log("Success Page1"); }, error : function(xhr) { } }); }); $("#page2").live("pageshow", function(e) { $.ajax({ type : 'GET', cache : false, url : "http://192.168.1.198:9051/something.xml" + "?time=" + Date.now(), data : { key : "value" }, dataType : "xml", success : function(xml) { console.log("Success Page2"); }, error : function(xhr) { } }); }); </script> <body> <div data-role="page" id="page1"> <div data-role="header">Page 1</div> <div data-role="content"> <input type="text" name="page1GetTime" id="page1GetTime" value="" /><a href="#" data-role="button" onclick="page1()" id="gotopage2"> Go to Page 2 </a> </div> </div> <div data-role="page" id="page2"> <div data-role="header">Page 2</div> <div data-role="content"> <input type="text" name="page2GetTime" id="page2GetTime" value="" /><a href="#" data-role="button" onclick="page2()" id="gotopage1">Go to Page 1</a> </div> </div> </body> Now when i click to "Go to page2" then page2 will be shown along with one ajax request .. If i keep on moving from one page to another then a ajax request is made.. This request stops responding after 4 to 5 request... Why is it happening?

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  • New 2.5" hard drive for laptop - What to compare?

    - by TFM
    I'm having trouble finding a new (bigger) hard drive for my laptop. I came across some criteria that I never thought about before, while I was checking a price comparison site. Of course, that made me more confused. First of all, I will probably go with something above 250 GB, and at least 16 MB cache. Now the confusing part: Most new drives are 7200 RPM, as opposed to good old 5400 RPM. 7200 RPM used to mean extra heat, but suddenly it's almost impossible to find a 5400 RPM in 2.5". What did I miss? Second question: Internal data transfer rate. My old drive has a rate of around 60 MB, but new drives have values like 100 MB or more (e.g. 150 MB). How important is this "internal data transfer rate"?

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