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Articles indexed Wednesday June 27 2012

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• PHP pages working slow from time to time

  - by user1038179

  I have VPS with limit of 2GB of ram and 8 CPU cores. I have 5 sites on that VPS (one of them is just for testing, no visitors exept me). All 5 sites are image galleries, like wallpaper sites. Last week I noticed problem on one site (main domain, used for name servers, and also with most traffic, visitors). That site has two image galleries, one is old static html gallery made few years ago and another, main, is powered by ZENPhoto CMS. Also I have that same gallery CMS on another two sites on that same VPS (on one running site and on one just for testing site). On other two sites I have diferent PHP driven gallery. Problem is that after some time (it vary from 10 minutes to few hours after apache restart), loading of pages on main site becomes very slow, or I get 503 Service Temporarily Unavailable error. So pages becomes unavailable. But just that part with new CMS gallery, old part of site with static html pages are working fast and just fine. Also other two sites with same CMS gallery and other two with different PHP driven gallery are working fine and fast at the same time. I thought it must be something with CMS on that main site, because other sites are working nice. Then I tryed to open contact and guest book pages on that main site which are outside of that CMS but also PHP pages, and they do not load too, but that same contact php scipts are working on other sites at the same time. So, when site starts to hangs, ONLY PHP generated content is not working, like I said other static pages are working. And, ONLY on that one main site I have problems. Then I need to restart Apache, after restart everything is vorking nice and fast, for some time, than again, just PHP pages on main site are becomming slower. If I do not restart apache that slowness take some time (several minutes, hours, depending ot traffic) and during that time PHP diven content is loading very slow or unavailable on that site. After sime time, on moments everything start to work and is fast again for some time, and again. In hours with more traffic PHP content is loading slowly or it is unavailable, in hours with less traffic it is sometimes fast and sometimes little bit slower than usually. And ones again, only on that main site, and only PHP driven pages, static pages are working fast even in most traffic hours also other sites with even same CMS are working fast. Currently I have about 7000 unique visitors on that site but site worked nice even with 11500 visitors per day. And about 17000 in total visitors on VPS, all sites ( about 3 pages per unique visitor). When site start to slow down sometimes in apache status I can see something like this: mod_fcgid status: Total FastCGI processes: 37 Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 11300 39 28 7 Working 11274 47 28 7 Working 11296 40 29 3 Working 11283 45 30 3 Working 11304 36 31 1 Working 11282 46 32 3 Working 11292 42 33 1 Working 11289 44 34 1 Working 11305 35 35 0 Working 11273 48 36 2 Working 11280 47 39 1 Working 10125 133 40 12 Exiting(communication error) 11294 41 41 1 Exiting(communication error) 11277 47 42 2 Exiting(communication error) 11291 43 43 1 Exiting(communication error) 10187 108 43 10 Exiting(communication error) 10209 95 44 7 Exiting(communication error) 10171 113 44 5 Exiting(communication error) 11275 47 47 1 Exiting(communication error) 10144 125 48 8 Exiting(communication error) 10086 149 48 20 Exiting(communication error) 10212 94 49 5 Exiting(communication error) 10158 118 49 5 Exiting(communication error) 10169 114 50 4 Exiting(communication error) 10105 141 50 16 Exiting(communication error) 10094 146 50 15 Exiting(communication error) 10115 139 51 17 Exiting(communication error) 10213 93 51 9 Exiting(communication error) 10197 103 51 7 Exiting(communication error) Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 7983 1079 2 149 Ready 7979 1079 11 151 Ready Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 7990 1066 0 57 Ready 8001 1031 64 35 Ready 7999 1032 94 29 Ready 8000 1031 91 36 Ready 8002 1029 34 52 Ready Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 7991 1064 29 115 Ready When it is working nicly there is no lines with "Exiting(communication error)" Active and Idle are time active and time since last request, in seconds. Here are system info. Sysem info: Total processors: 8 Processor #1 Vendor GenuineIntel Name Intel(R) Xeon(R) CPU E5440 @ 2.83GHz Speed 88.320 MHz Cache 6144 KB All other seven are the same. System Information Linux vps.nnnnnnnnnnnnnnnnn.nnn 2.6.18-028stab099.3 #1 SMP Wed Mar 7 15:20:22 MSK 2012 x86_64 x86_64 x86_64 GNU/Linux Current Memory Usage total used free shared buffers cached Mem: 8388608 882164 7506444 0 0 0 -/+ buffers/cache: 882164 7506444 Swap: 0 0 0 Total: 8388608 882164 7506444 Current Disk Usage Filesystem Size Used Avail Use% Mounted on /dev/vzfs 100G 34G 67G 34% / none System Details: Running on: Apache/2.2.22 System info: (Unix) mod_ssl/2.2.22 OpenSSL/0.9.8e-fips-rhel5 DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 mod_fcgid/2.3.6 Powered by: PHP/5.3.10 Current Configuration Default PHP Version (.php files) 5 PHP 5 Handler fcgi PHP 4 Handler suphp Apache suEXEC on Apache Ruid2 off PHP 4 Handler suphp Apache suEXEC on Apache Configuration The following settings have been saved: fileetag: All keepalive: On keepalivetimeout: 3 maxclients: 150 maxkeepaliverequests: 10 maxrequestsperchild: 10000 maxspareservers: 10 minspareservers: 5 root_options: ExecCGI, FollowSymLinks, Includes, IncludesNOEXEC, Indexes, MultiViews, SymLinksIfOwnerMatch serverlimit: 256 serversignature: Off servertokens: Full sslciphersuite: ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP:!kEDH startservers: 5 timeout: 30 I hope, I explained my problem nicely. Any help would be nice.

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• nginx public webdav server

  - by Gert Cuykens

  Can you check the user group from a $remote_user? location ~ ^/home/(.*)$ { alias /home/$remote_user/$1; auth_pam "Restricted"; auth_pam_service_name "nginx"; dav_methods PUT DELETE MKCOL COPY MOVE; dav_access group:rw all:r; create_full_put_path on; } location ~ ^/get/(.*)$ { alias /home/$1; #check the group of the $remote_user; } curl -T test.txt 'http://gert:[email protected]/home/' curl 'http://friend:[email protected]/get/gert/test.txt'

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• What maintenance is required for a Postfix setup?

  - by JonLim

  I've taken a look at the setup and configuration process for a Postfix server, planning to use it for just sending emails out from my server. So far, I have these steps: Setup Postfix Configure Postfix Install DKIM Set SPF records Tune for performance Debug Seems rather straightforward. However, I was just wondering: are there any actions I should be taking for periodic maintenance of my Postfix setup? Thanks! EDIT: Also, just curious, how long would this entire setup ideally take? 30 - 60 minutes? More?

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• Can I set up a different method of authentication on Nagios?

  - by cwd

  Nagios is a wonderful too for monitoring servers. Their web interface is not bad, either. However I am not crazy about using the HTTP Authentication that comes standard. Is there a way to use another method of authentication? (and I don't mean restricting access by IP address in the .htaccess file) Something with a form-based login would be wonderful, but perhaps there is no such thing. I'm hoping you guys have found something I haven't.

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• SCCM Client Push FAIL - Win2000 box

  - by ajp

  When trying to install the SCCM client onto a Windows 2000 box, the install fails. The install script is run through a batch file (CONTENTS: \mdop\SCCM_client\ccmsetup.exe /mp:MDOP /logon smssitecode=MID smsslp=MDOP) hosted on a public area of the network. This script has worked for all machines (mostly Win2003 Server). I've tried enabling all the common services it requires (BITS, IIS Admin, Windows Installer), but it still only runs for a second or two then quits. Here's the piece of the log file where it errors out: [LOG[Couldn't get directory list for directory 'http://MDOP/CCM_Client/ClientPatch'. This directory may not exist.]LOG]! time="13:55:53.618+300" date="06-30-2009" component="ccmsetup" context="" type="0" thread="1676" file="ccmsetup.cpp:6054" Full Log: http://paste-it.net/public/gb11732/

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• PRNG test suite: bitstream and stream length

  - by Martin Trigaux

  On the NIST website, there is a tool called sts (Statistical Test Suite) that allow us to rest the validity of a pseudo-random number generator based on a stream of bits in input. When running the program, there is two variables I am not sure to understand : the stream length and number of bitstream. Is the stream length the size of the file ? The number of bit inside ? The size of a bitstream ? Are the bitstreams subset of the whole file ? Chosen how ? Let say I have a text file containing 1,000,000 bits in ascii. What should be my arguments ? You can find the user manual here if needed (I didn't find explanation about what are these variables in it). Thank you

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• Avoiding double NAT with PPPoA connection

  - by user498429

  I've got an ASUS RT-N56U wending its way to me and have been thinking about how to set this up on my home network. I currently have a Netgear DG634g V5 and was hoping to use this device as a modem only, with everything else being done by the router. Problem is, my ISP uses PPPoA and the asus seems only to support PPPoE. I'm aware that a double NAT configuration should be avoided and I've seen some instructions here: http://www.tomshardware.co.uk/forum/33700-17-ultimate-modem-router-setup-thread Specifically, I was going to follow the guidance in the section entitled "Chaining Two Networks Together In a Cascading Fashion (Modem handles PPPoA)". That seems like it could work. However, is this a double NAT configuration or even a good way to do it? Would UPnP still work? The other option, I understand, is to buy the Draytek Vigor 120 but I'd ideally like to avoid the cost of that if its not necessary.

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• How to "paint" the data layer of a CD using a CD drive?

  - by Jens

  I am looking for software to "paint" geometric shapes, dots or lines on the data layer of a writable CD (or DVD) using a standard drive. These do not have to be visible to the naked eye; I'd try to abuse the small dot size on the CD for some scientific measurements. I am aware of the "LightScribe" feature of some drives and that is not what I am looking for. Most of the software available is of course limited to write music or data, on does not offer the low-level "place a dot at this radius, this angle"-functionality. Is there something out there for me?

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• What happened to Debug test in current context (Ctrl+R, Ctrl+T) in VS2012?

  - by Nilzor

  One of the hot-keys I used most in Visual Studio 2010 was Ctrl+R, Ctrl+T, which ran the unit test the cursor currently was on in debug mode. I think the command is named "Debug tests in current context". Now, you still have a command named Test.DebugTestsInCurrentcontext, but when I assign it to a key combination and activate it, it always yields "currently not available". I do know that there is a new function in the Test menu named "Debug selected test" - but I think that mappes to the selected tests in the Test Explorer, not the file editor. What gives, Microsoft? Are you removing features?

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• SQL Server Licence in MSDN

  - by Manoj

  I had bought a VS2010 Professional version licence through our corporate licence. I was recently browsing through the MSDN product download page and found that SQL server download were available for me without any key required. How is this possible? Is this the full version and can I use it in production mode? Also there were Windows 7 licence key of upto 10 available. I am not sure what this can be used for. Can somebody clarify? Regards...

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• How to disable Spotlight content indexing in Mac OS

  - by o.v.

  From Windows experience, I could always elect Live search to only index file names not their content. Is this something that can be done with Spotlight on a Mac? It used to index absolutely everything, for instance it would return a bunch of video files for any obscure character combination typed into the search field. Right now I've disabled Spotlight entirely as per this answer, but it seems to have disabled searching altogether. For instance, Finder is yet to locate any .pdf files in a small directory as I'm typing this question (unlike windows search which would still be able to work even with indexing disabled) Alternatively, if there is any way (including a trusted third-party app) that will index file names and metadata e.g. ID3 tags that would likely be the preferred option.

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• Setting cmd with default command and user defined message

  - by gpuguy

  On button click in a winform application I am executing cmd.exe file (Using system("cmd.exe");), which opens perfectly fine and displays the following: Microsoft Windows XP [Version 6.1.7601] (C) Copyright 1985-2001 Microsoft Corp. C: A\Documents\Visual Studio 2010\Projects\WinformTest\WinformTest> What I want is when a user click the button, the cmd.exe open with default command and a message like this: Please change command options and press enter to get started experimenting C: A\Documents\Visual Studio 2010\Projects\WinformTest\WinformTest> reduction -x 33554432 -i Notice a new command and a message is already there. Can anybody tell me how to go for this?

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• Url rewrite rule

  - by vvr

  How to redirect a page form show.php?id=(15charstring) to show/(15charstring) I tried like this it is doing reverse means it is redirecting /show/(15chars) to show.php?id=(15chars) RewriteEngine on RewriteRule ^/show/([a-zA-Z0-9]{15})$ http://site.com/show.php?id=$1 Second case is i have to redirect to another page if he added &m=true to the url show.php?id=(15chars)&m=true html/show.php?id=(15chars).

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• What differences are there between "home" switches and "professional" switches?

  - by pjreddie

  Our radio station uses a PtP wireless system to stream our radio and TV signals from our studio up a hill to our transmitter. We have been having problems with warbly sound and drop outs that come from some point in this system. An engineer that occasionally visits the station thinks it could be the switches we use on each side of the PtP wireless system to connect the PtP devices to the encoders and decoders and wants us to get two of these switches: http://www.amazon.com/Netgear-JGS516-ProSafe-16-Port-Ethernet/dp/B0002CWPOK/ref=dp_return_1 The encoder/decoder setup only streams 8Mbps total so it seems like the switches we have should not be stressed out, unless they are causing sufficient latency to degrade the performance of the encoder/decoder. At each end of the connection we only have 4 connections, is there any reason we couldn't get a cheaper, "home" quality switch like this: http://www.amazon.com/D-Link-DGS-1005G-5-Port-Gigabit-Desktop/dp/tech-data/B003X7TRWE/ref=de_a_smtd Is there a significant difference that we would notice in terms of latency between these two switches? How much does the quality of the switch actually matter in this scenario? Any help is appreciated, feel free to ask questions if anything needs clarification. Thanks

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• How can I turn off display resolution auto-detection in Windows Vista?

  - by 6502

  At work I've 4 different computers connected using a keyboard/video/mouse switch. Quite often when I switch to windows vista the resolution is totally wrong and I need to get the screen properties dialog, change to another wrong resolution (because the fun part is that the apparently current resolution listed in the dialog is the correct one) then re-switch to the correct resolution. I would really like to just shut that broken resolution autodetection code off. Is there a way to disable screen resolution autodetection in Windows Vista?

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• Discover the public ip of a network without being connected

  - by Martin Trigaux

  Let say, I'm next to a network and can see the traffic (with airodump or similar tool) but can not decipher it (because I am not connected on the network). Is it possible to discover the public ip address of the network ? I know the MAC address of the users connected on the network but do I know the one of the router ? If yes, maybe there is a way to do the matching. I know IP addresses are not forever but some addresses are static and never change. Maybe there is a database of MAC address having recorded that. Google has a database that match MAC address and geographical coordinates so why not with IP addresses ? Other idea, if I know where am I, I can maybe guess the IP range used in the city by the ISP (is it findable ?) and then try to "ping" each IP on the range (if it is a /24, it's possible, even /16 maybe). Will I get some information like the MAC of the box or see some traffic on the network ? These are two ideas I had. I don't know if they are doable, certainly not perfect. Do you think of some others ? By trying several methods, maybe I can get a guess with a bit of luck. Thank you

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• How to set Outlook 2010 to use signatures outside of the default signature folder?

  - by Gregory MOUSSAT

  With Outlook before the 2010 version, it was possible to specify any path for the signatures. With Outlook 2010, the only way is to use those stored into C:\Documents and Setting\UserName\Local Settings\Application Datas\Microsoft\Signature\ I'd like to point the signatures to a network share. Allowing us to modify the signatures into the share, instead of login on every computers each time we are asked to modify them (and this is quite often because the signatures contain logos about current events). We currently use a script to copy the signatures from the share to the local disk when users login.

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• Error 1603 when installing Microsoft Intellipoint 8.2 on Windows 7 x64

  - by HeB

  Installing MS Intellipoint 8.2 (for my MS touch mouse) on my Dell Inspiron 580 always gives the following error: "Setup must close because an error occurred. Verify that your computer meets the system requirements on the product packaging. Restart your computer and try running Setup again. If this error happens again, see Help for customer support options. (Error Code 1603)" I'm running Windows 7 x64 with all latest updates. MS solutions don't work. How to fix?

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• Remotely running batches on a Windows PC

  - by Eduardo León

  I want to remotely control my home desktop PC (running Windows 7 Professional), mainly to perform the following tasks: Downloading email attachments, and sending emails with attachments Running UI-less programs whose only inputs are files and whose only outputs are files So far, the only solution I have found is to use Remote Desktop to connect to my PC, but this is very slow and inefficient, especially when there is no fast Internet connection available other than my cell phone's. I would like to be able to send batch commands to my PC, like: Download an email attachment Use it as input for an UI-less program Save the program's output to a file Send that file to myself as an email attachment Is this possible? How could I do it?

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• Synchronizing Outlook 2010 Calendar with Sharepoint 2010 website Calendar

  - by Henry

  How do I synchronize my Outlook 2010 calendar to SharePoint 2010 website? I am able to synchronize SharePoint Calendar into my Outlook calendar but not able to do Outlook Calendar (meetings, Data) into SharePoint Calendar. When my office people go into our intranet site, I just want them to see my calendar in SharePoint which updates the data from Outlook and displays it but this calendar data on SharePoint should only be read-only to other users.

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• Is there any program or way to make Mac OS X's ?-tab behave like Windows' alt-tab?

  - by J. Pablo Fernández

  Is there any program or way to make Mac OS X's ?(command)-tab behave like Windows' alt-tab? That is, instead of switching between applications, to switch between windows of all applications. I do know there's a way to switch between windows of the same application, but that's not what I want either. I'm not just trying to make Mac OS X behave like my recent former OS, I've been a Mac user for over two years and before that Ubuntu. After using Expose and ?-tab I think Windows' or Ubuntu's alt-tab is better.

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• Is it ok to share private key file between multiple computers/services?

  - by Behrang

  So we all know how to use public key/private keys using SSH, etc. But what's the best way to use/reuse them? Should I keep them in a safe place forever? I mean, I needed a pair of keys for accessing GitHub. I created a pair from scratch and used that for some time to access GitHub. Then I formatted my HDD and lost that pair. Big deal, I created a new pair and configured GitHub to use my new pair. Or is it something that I don't want to lose? I also needed a pair of public key/private keys to access our company systems. Our admin asked me for my public key and I generated a new pair and gave it to him. Is it generally better to create a new pair for access to different systems or is it better to have one pair and reuse it to access different systems? Similarly, is it better to create two different pairs and use one to access our companies systems from home and the other one to access the systems from work, or is it better to just have one pair and use it from both places?

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• Find Out Which Websites are Tracking You Across the Web

  - by Taylor Gibb

  Have you ever wondered where the websites you visit send your information? Well, if you have, read on to find out about this new extension from Mozilla that will tell you how you are tracked across websites. Editor’s Note: Most websites use cookies of some type, and all online advertisers do, including the advertisers on this site. You’re welcome to block cookies if that’s a worry. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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• Filtres d'écran en 2D avec OpenGL dans le Blender Game Engine, une traduction de Guillaume Belz

  Bonjour à tous Blender est à l'origine un logiciel libre de dessin 3D, mais propose de plus en plus de fonctionnalités avancées d'animation. En particulier, Blender intègre un moteur de jeux appelé Blender Game Engine (BGE), qui permet aux utilisateurs d'écrire leurs propres shaders en utilisant les langages Python et OpenGL Shading Language (GLSL). Dans cet article, l'auteur présente les bases pour écrire ses propres shaders et les paramétrer dans Blender à partir d'un exemple simple : un filtre de flou. Filtres d'écran en 2D avec OpenGL dans le Blender Game Engine A...

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• NetBeans ??????????????????

  - by user13137856

  NetBeans IDE ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????NetBeans ??????????????????????????????????????? % netbeans --locale en ??????????????????????????????????????????????????? $HOME/.netbeans $HOME/.cache/netbeans ?????? --userdir ????????????????????? % netbeans --locale en --userdir /tmp/my_newuserdir NetBeans ???????????????????????????????????????NetBeans ???????????????? jar ????????????????????????????????? git ??????????????????????2?????????? NetBeans ????????????(??????????????????????????) ide/modules/locale/org-netbeans-libs-git_ja.jar ide/modules/locale/org-netbeans-modules-git_ja.jar ??? FAQ????????: NetBeans ? UI ???????????????????????? ????????????????????????????? NetBeans ??????????????????

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