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• Web Usage Policies at "Best Companies to Work For"

  - by Greg

  For any company that has made it onto a "Best Companies to Work For" list* in 2010 that hires programmers, what restrictions on web usage do they have in place? Does that company view unrestricted internet access as a benefit to their employees even if they might use it for non-work related reasons? If you can provide a link to back up this information, even better. (* I don't want to promote any specific publication, but they are easy enough to find.) My hypothesis is that a company that aspires to be one of the best needs to provide fairly unrestricted internet access and I'm trying to test it.

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• How do I include Implementation and Usage Documentation in one file

  - by Angelo.Hannes

  There are two types of documentation. One type, the Implementation Documentation, contains information about specific implementation of a construct (eg. Class, Method, etc.). It is targeted to the future me, maintainer, debugger and so on. And there is Usage Documentation, containing information how to use a provided api. It does not contain information about specific implementation and is targeted to users of the api. How do I include both of them in one file? (Or do I include both of them in one file? And if not, what type belongs into the source file?) Are there special techniques, using java-doc and/or best practices?

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• Ubuntu One Preferences does not show usage, name, e-mail, current plan

  - by Jim

  Ubuntuone is correctly synchronizing selected files between two computers running Ubuntu 10.10. When I open Ubuntuone Preferences, Account tab, on one computer it does not display the usage, name e-mail or current plan. On the other computer all information is shown correctly. On the Devices tab the 2 computers are not shown. They do show correctly on the other computer. Any ideas on how to fix this problem. I have reinstalled Ubuntuone per this link.

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• Where to find PHP version usage stats?

  - by Darren Cook

  My original question was: what percentage of sites are using php 5.4.x? (As it has some very interesting new features.) With secondary questions like how many of the cheap web hosting places have upgraded, which versions of the linux distros include it, etc. But I'm coming up blanks. http://php.net/usage.php stops at July 2007, and the nexen.net website seems to have stopped in 2008. At SecuritySpace they only list the web servers, not php versions. The TIOBE link isn't what I'm after (it doesn't -- and couldn't -- break down by version number. I thought php.net might show download numbers, but I cannot see them anywhere. I kind of answered the distro question, but it requires a lot of clicking around at distrowatch.com. E.g. I see here that Ubuntu offers php 5.4.6 in the latest snapshot, but the latest release (Ubuntu 12.04) has 5.3.10.

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• Ubuntuone Preferences does not show usage, name, e-mail, current plan

  - by Jim

  Ubuntuone is correctly synchronizing selected files between two computers running Ubuntu 10.10. When I open Ubuntuone Preferences, Account tab, on one computer it does not display the usage, name e-mail or current plan. On the other computer all information is shown correctly. On the Devices tab the 2 computers are not shown. They do show correctly on the other computer. Any ideas on how to fix this problem. I have reinstalled Ubuntuone per this link: https://wiki.ubuntu.com/UbuntuOne/FAQ/HowDoICompletelyRemoveAndReinstallUbuntuOne

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• Meaning of the free space indication in Deluge

  - by Tjae Beamon

  Recently I installed Ubuntu 12.0.4 using Wubi with my current Windows Vista. I have already installed all the 265 updates from the Ubuntu software center and downloaded Deluge from there. My hardrive is 80GB according to the disc usage analyzer. It also says 31.2 GB used and 47.8GB free. The confusion comes when I run Deluge. At the bottom it says 2.0GB free space. Is that 2.0GB just a size set from the torrent client and can be changed or am I limited to just that 2.0GB?

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• La beta du SDK de Kinect pour Windows est disponible gratuitement pour un usage non commercial

  La beta du SDK de Kinect pour Windows est disponible gratuitement Pour un usage non commercial Mise à jour du 17/06/11, par Hinault Romaric Comme l'avait annoncé Microsoft lors de la conférence MiX 11 de la Las Vegas en avril (lire ci-avant), le SDK de Kinect pour Windows est disponible aujourd'hui en version Beta. Ce SDK permettra aux développeurs de créer des applications pour PC exploitant son capteur de mouvements, de porter les jeux initialement conçus pour la Xbox 360 vers le PC ou appliquer la technologie à d'autres usages. Pour Microsoft, Kinect est en effet « plus qu'une simple plateforme pour les jeux et le ...

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• gnome shell with very high CPU usage

  - by 501 - not implemented

  i'm running ubuntu gnome 13.10 on my dell latiude e6510 with a i5 m560. The I5 comes with a embedded Intel HD 3400 Graphics. The average cpu usage of the gnome-shell is by 160% it's to high, I think. Is there a problem with a driver? If i call the command glxinfo | grep OpenGL it returns: OpenGL vendor string: VMware, Inc. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits) OpenGL version string: 2.1 Mesa 9.2.1 OpenGL shading language version string: 1.30 OpenGL extensions: Greetings

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• Vim and emacs usage/use case/user statistics

  - by G. Kayaalp

  I wonder if there are statistical documents/research based on use of the two major text editors, in which amount of usage is compared to use case, be it programming language, industry, user age, OS and/or many other things I can't think of now. I don't need this information for an assignment/homework or something, I'm just curious about it. I've been searching this for some time, not very intensively, and only thing I have found was this: Emacs user base size Lastly, I want to denote that I'm not looking for estimations. I'm not asking if one editor is better that the other, nor I am expecting help on choice between them. I'm not asking for opinions.

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• DNSCrypt-Proxy specific usage

  - by trekkiejonny

  I have some specific usage questions about DNSCrypt-Proxy. I followed a guide and ended with the command dnscrypt-proxy --daemonize –user=dnscrypt Without any further switches does it default to using OpenDNS's resolver server? I want to use specific servers, I found reference to pointing it to the full path of a CSV file. What is the CSV format for use with DNSCrypt? Would it be "address:port,public key"? Does it go in order of working addresses? For example, first resolver doesn't connect it moves on to the second line of the CSV, then third etc. Lastly, would this question be more appropriate in another StackExchange section?

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• Java Runtime.getRuntime().exec() alternatives

  - by twilbrand

  I have a collection of webapps that are running under tomcat. Tomcat is configured to have as much as 2 GB of memory using the -Xmx argument. Many of the webapps need to perform a task that ends up making use of the following code: Runtime runtime = Runtime.getRuntime(); Process process = runtime.exec(command); process.waitFor(); ... The issue we are having is related to the way that this "child-process" is getting created on Linux (Redhat 4.4 and Centos 5.4). It's my understanding that an amount of memory equal to the amount tomcat is using needs to be free in the pool of physical (non-swap) system memory initially for this child process to be created. When we don't have enough free physical memory, we are getting this: java.io.IOException: error=12, Cannot allocate memory at java.lang.UNIXProcess.<init>(UNIXProcess.java:148) at java.lang.ProcessImpl.start(ProcessImpl.java:65) at java.lang.ProcessBuilder.start(ProcessBuilder.java:452) ... 28 more My questions are: 1) Is it possible to remove the requirement for an amount of memory equal to the parent process being free in the physical memory? I'm looking for an answer that allows me to specify how much memory the child process gets or to allow java on linux to access swap memory. 2) What are the alternatives to Runtime.getRuntime().exec() if no solution to #1 exists? I could only think of two, neither of which is very desirable. JNI (very un-desirable) or rewriting the program we are calling in java and making it it's own process that the webapp communicates with somehow. There has to be others. 3) Is there another side to this problem that I'm not seeing that could potentially fix it? Lowering the amount of memory used by tomcat is not an option. Increasing the memory on the server is always an option, but seems like more a band-aid. Servers are running java 6.

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• Throttling CPU/Memory usage of a Thread in Java?

  - by Nalandial

  I'm writing an application that will have multiple threads running, and want to throttle the CPU/memory usage of those threads. There is a similar question for C++, but I want to try and avoid using C++ and JNI if possible. I realize this might not be possible using a higher level language, but I'm curious to see if anyone has any ideas. EDIT: Added a bounty; I'd like some really good, well thought out ideas on this. EDIT 2: The situation I need this for is executing other people's code on my server. Basically it is completely arbitrary code, with the only guarantee being that there will be a main method on the class file. Currently, multiple completely disparate classes, which are loaded in at runtime, are executing concurrently as separate threads. I inherited this code (the original author is gone). The way it's written, it would be a pain to refactor to create separate processes for each class that gets executed. If that's the only good way to limit memory usage via the VM arguments, then so be it. But I'd like to know if there's a way to do it with threads. Even as a separate process, I'd like to be able to somehow limit its CPU usage, since as I mentioned earlier, several of these will be executing at once. I don't want an infinite loop to hog up all the resources. EDIT 3: An easy way to approximate object size is with java's Instrumentation classes; specifically, the getObjectSize method. Note that there is some special setup needed to use this tool.

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• Eee PC 1015BX ram compatibility?

  - by AdrianaMX

  Asus Eee PC 1015BX Operating System Windows 7 Starter, 32bit CPU AMD Fusion APU C60 1.0GHz (dual core) Processor Graphic AMD Radeon HD 6290 (256 MB Shared) Memory DDR3, 1 x SO-DIMM, 1GB I have upgraded the preloaded "Windows 7 Starter" to "Windows 7 Professional" I want to upgrade the ram, from 1gb (factory) to 4 gb. What should i buy? SODDR3, 4GB, 1066MHZ, PC3-8500, 204PIN? or SODDR3, 4GB, 1333MHZ, PC3-10666, 204PIN? I already know that Windows 7 32-bits can't handle 4gb, only 3gb (but 3gb is better than one stick of 2gb). ASUS send me this link, but i think they are wrong, (or Insufficient Information for me) http://www.kingston.com/us/memory/search/Default.aspx?DeviceType=3&Mfr=ASU&Line=Eee%20PC&Model=71404 Thank you. CPU-Z Chipset Memory Type DDR3 Memory Size 750 MBytes Memory Frequency 532.2 MHz (3:16) CAS# latency (CL) 7.0 RAS# to CAS# delay (tRCD) 7 RAS# Precharge (tRP) 7 Cycle Time (tRAS) 20 Bank Cycle Time (tRC) 27 Memory SPD NO INFO AIDA64 North bridge Properties North bridge AMD K14 IMC Supported Memory Types DDR3-800, DDR3-1066 SDRAM Memory Slots DRAM Slot #1 1 GB (DDR3 SDRAM) Integrated Graphics Controller Graphics Controller Type AMD Radeon HD 6290 (Wrestler) Graphics Controller Status Enabled Graphics Frame Buffer Size 256 MB

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• How can I check detailed memory information on linux?

  - by user35153

  I know that I can check cpu info via cat /proc/cpuinfo and memory info via cat /proc/meminfo. but cat /proc/meminfo yiels result like : MemTotal: 66098352 kB MemFree: 329152 kB Buffers: 632432 kB Cached: 62619692 kB SwapCached: 0 kB Active: 6425444 kB Inactive: 58717276 kB SwapTotal: 1951888 kB SwapFree: 1951796 kB Dirty: 38416 kB Writeback: 0 kB AnonPages: 1890268 kB Mapped: 12624 kB Slab: 464580 kB SReclaimable: 275812 kB SUnreclaim: 188768 kB PageTables: 7524 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 35001064 kB Committed_AS: 3860248 kB VmallocTotal: 34359738367 kB VmallocUsed: 125636 kB VmallocChunk: 34359612527 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB But I want to learn info on the clock speed of the memories (in Mhz?) HOW can I get That Info ? Thnks

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• Memory Stick Controller is not compatible with this version of Windows.

  - by nona urbiz

  I'm getting this error message in the Action Center on Windows 7, and I can't seem to solve it through Windows or through searches on Google: RICOH R5C592 PCI-CardBus/IEEE-1394/SD Card/Memory Stick Controller is not compatible with this version of Windows. Thanks for any help PS. I wasn't sure if you're allowed to post questions like this, about proprietary software, but I checked the FAQ and it seemed ok. Response: The URL I am told to visit it this but I can't tell which I should choose that I am originally presented with, or what to put in to select, as I am not sure what input it is referring to.

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• Can I fix memory leaks in browsers? (Win7 64bit IE9 Chrome)

  - by Randy

  I have a habit of opening websites in their own window, then getting interested in something else in another window while leaving the first window open with the intention of returning to finishing reading. Sometimes I'll leave browser windows open for quite a while. When I do, the browser locks-up gigs of memory until it uses so much, IE will no longer respond. I've seen one browser window use up over 2 gigs just sitting there doing nothing. Chrome appears to do it too, but it doesn't use nearly as much as IE. Is there a way to stop this? Any ideas what may be causing it? Is it a problem with the OS or the browsers? Any insight is appreciated.

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• How to know the maximum capacity of memory/RAM of a server? [closed]

  - by Nam G. VU

  I have a Dell PowerEdge T410 and have installed 16Gb RAM for it. I don't know if I can extend it to 32Gb, 64Gb, ... RAM on this server. As the description, it seems I have no such choice. So my question is, how to know exactly the maximum capacity of memory/RAM of a server? I need this information so as to verify the number by myself. ps. My server is not exactly the same as the description on Dell website - I indeed modify the configuration to meet my budget. Currently my server is my purchased server configuration

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• How to solve Python memory leak when using urrlib2?

  - by b_m

  Hi, I'm trying to write a simple Python script for my mobile phone to periodically load a web page using urrlib2. In fact I don't really care about the server response, I'd only like to pass some values in the URL to the PHP. The problem is that Python for S60 uses the old 2.5.4 Python core, which seems to have a memory leak in the urrlib2 module. As I read there's seems to be such problems in every type of network communications as well. This bug have been reported here a couple of years ago, while some workarounds were posted as well. I've tried everything I could find on that page, and with the help of Google, but my phone still runs out of memory after ~70 page loads. Strangely the Garbege Collector does not seem to make any difference either, except making my script much slower. It is said that, that the newer (3.1) core solves this issue, but unfortunately I can't wait a year (or more) for the S60 port to come. here's how my script looks after adding every little trick I've found: import urrlib2, httplib, gc while(true): url = "http://something.com/foo.php?parameter=" + value f = urllib2.urlopen(url) f.read(1) f.fp._sock.recv=None # hacky avoidance f.close() del f gc.collect() Any suggestions, how to make it work forever without getting the "cannot allocate memory" error? Thanks for advance, cheers, b_m update: I've managed to connect 92 times before it ran out of memory, but It's still not good enough. update2: Tried the socket method as suggested earlier, this is the second best (wrong) solution so far: class UpdateSocketThread(threading.Thread): def run(self): global data while 1: url = "/foo.php?parameter=%d"%data s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect(('something.com', 80)) s.send('GET '+url+' HTTP/1.0\r\n\r\n') s.close() sleep(1) I tried the little tricks, from above too. The thread closes after ~50 uploads (the phone has 50MB of memory left, obviously the Python shell has not.) UPDATE: I think I'm getting closer to the solution! I tried sending multiple data without closing and reopening the socket. This may be the key since this method will only leave one open file descriptor. The problem is: import socket s=socket.socket(socket.AF_INET, socket.SOCK_STREAM) socket.connect(("something.com", 80)) socket.send("test") #returns 4 (sent bytes, which is cool) socket.send("test") #4 socket.send("test") #4 socket.send("GET /foo.php?parameter=bar HTTP/1.0\r\n\r\n") #returns the number of sent bytes, ok socket.send("GET /foo.php?parameter=bar HTTP/1.0\r\n\r\n") #returns 0 on the phone, error on Windows7* socket.send("GET /foo.php?parameter=bar HTTP/1.0\r\n\r\n") #returns 0 on the phone, error on Windows7* socket.send("test") #returns 0, strange... *: error message: 10053, software caused connection abort Why can't I send multiple messages??

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• Running out of memory but not seeing excessive object allocation in Instruments

  - by Scotty Allen

  I have an iPad app that's crashing due to low memory. However, Instruments doesn't show any significant amount of memory allocated using ObjectAlloc - it stays under 1MB for the lifetime of the application. Leaks shows less than 1kB leaked over the course of the run. Memory monitor shows the free memory on the devices drop significantly with use, eventually dropping to the point that it's out of memory. Here's a screenshot from Instruments: I'm totally stumped. As far as I can tell, this basically says that as far as my app is concerned, I'm never using more than about 750kB, but that the device is still running out of physical memory, which is causing my app to crash/force exit. I'm new to debugging memory issues with XCode. Am I measuring this wrong? Is there another way to see where this memory is going?

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• iPhone app works hundreds of times, then crashes from memory error on startup, then never works unti

  - by peter

  I have a Cocos2d/openGL iPhone game. It's a universal app and I'm dealing with an occasional but nasty error on the iPad. We are loading a lot of textures up front (3 2048x2048 textures). I'm working on reducing this up front load, but what worries me is I really don't understand the root cause of this crash that permanently breaks the app. This is the deal: 1. App works fine for hundreds of plays on the iPad 2. Eventually (I'm guessing due to other programs using up some memory and not letting go or whatever) the app starts crashing on startup. It just closes again in the middle of loading. 3. The App will now never work again on that iPad, closing immediately every time, until the iPad is restarted. Obviously my app is demanding too much memory up front to work reliably every time, I get that. What I don't get is why when it fails once, it has failed forever until the iPad is restarted. Can anyone explain what is going on here? EDIT: forgot to add organizer crash lags just say low memory, like this every time (I changed my app name to MyAppName below). Again, I know it's low memory, but why does it stay low memory until restart?: Incident Identifier: E7A2507C-3FB1-4E3B-B315-09F094236541 CrashReporter Key: 0fda9d667f2c6073f20a76809aa25438b6854d15 OS Version: iPhone OS 3.2 (7B367) Date: 2010-04-30 16:59:44 -0400 Free pages: 437 Wired pages: 17228 Purgeable pages: 0 Largest process: MyAppName Processes Name UUID Count resident pages MyAppName <6307ce41802850944baa78d29224fa7f> 22385 (jettisoned) (active) mediaserverd <ea8bac28b06fe3980fdd44b5caceb563> 242 DTMobileIS <a0f651e43881e66f50f8a95abea72921> 5826 notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 67 syslog_relay <4ceaed776d2df957fa130712f4ef21d0> 66 notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 67 notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 67 afcd <4f3c9566e33b4463f05603d990584e5d> 72 ptpd <83de0f774bd6553d513ae9e19b0f9b56> 181 syslogd <66247e305d5c0bf6f1ce1cc950653263> 81 lsd <a4d852c1c8da2b3d231bdc90887b52ba> 130 iapd <a8534cbde4b90ad5915dd26ab03ff3e3> 204 notifyd <5e9d5bee7c3eae1c8b494c79eb11406e> 71 BTServer <64e4a6ea6b1240db2331e05a29caa862> 108 CommCenter <97bf297944ac4bde19bcee96dd23bd5f> 181 SpringBoard <c7a5904c12db7b14334a4edaa4cabaa9> 5339 (active) configd <aca9fa3380322669164fd6b1a3864300> 373 fairplayd.K48 <2d997ffca1a568f9c5400ac32d8f0782> 84 locationd <dd1ea88105c62173908ce767db5c4d37> 599 mDNSResponder <820560222d47a1f2a0dce98a7f8a9721> 108 lockdownd <497fd54c79a680bf29f5d9320f514613> 303 MobileStorageMou <c277b79c2157c4dc5cfc5c3ca35bd5f2> 69 launchd <66972eee4d865c4383b33d985d22994b> 98 **End**

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• How do I use memmap to reserve memory on boot?

  - by alexl

  Ive got a laptop with some corrupted ram addresses, so I'm trying to use memmap to reserve them before linux boots up. Ive been trying to use memmap=10M$1024M' as a kernel boot option, but linux crashes (with no errors) and restarts. If I use a different syntax for memmap likememmap=1023M@0M` it boots fine. Do I have to specify a certain size block to reserve or could my kernel version not support reserving memory with memmap? Maybe I'm better off using memmap=exactmap, and if so, could somebody point me to a good faq on how to use it?

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• How can I see a specific page's memory consumption of a browser ?

  - by burak ozdogan

  Hi, What way or which profiler tool I should use to see a specific web page's memory consumption? Does it make a difference if it belongs to a TAB in an individual browser window? Thanks

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• How to debug JBoss out of memory problem?

  - by user561733

  Hello, I am trying to debug a JBoss out of memory problem. When JBoss starts up and runs for a while, it seems to use memory as intended by the startup configuration. However, it seems that when some unknown user action is taken (or the log file grows to a certain size) using the sole web application JBoss is serving up, memory increases dramatically and JBoss freezes. When JBoss freezes, it is difficult to kill the process or do anything because of low memory. When the process is finally killed via a -9 argument and the server is restarted, the log file is very small and only contains outputs from the startup of the newly started process and not any information on why the memory increased so much. This is why it is so hard to debug: server.log does not have information from the killed process. The log is set to grow to 2 GB and the log file for the new process is only about 300 Kb though it grows properly during normal memory circumstances. This is information on the JBoss configuration: JBoss (MX MicroKernel) 4.0.3 JDK 1.6.0 update 22 PermSize=512m MaxPermSize=512m Xms=1024m Xmx=6144m This is basic info on the system: Operating system: CentOS Linux 5.5 Kernel and CPU: Linux 2.6.18-194.26.1.el5 on x86_64 Processor information: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz, 8 cores This is good example information on the system during normal pre-freeze conditions a few minutes after the jboss service startup: Running processes: 183 CPU load averages: 0.16 (1 min) 0.06 (5 mins) 0.09 (15 mins) CPU usage: 0% user, 0% kernel, 1% IO, 99% idle Real memory: 17.38 GB total, 2.46 GB used Virtual memory: 19.59 GB total, 0 bytes used Local disk space: 113.37 GB total, 11.89 GB used When JBoss freezes, system information looks like this: Running processes: 225 CPU load averages: 4.66 (1 min) 1.84 (5 mins) 0.93 (15 mins) CPU usage: 0% user, 12% kernel, 73% IO, 15% idle Real memory: 17.38 GB total, 17.18 GB used Virtual memory: 19.59 GB total, 706.29 MB used Local disk space: 113.37 GB total, 11.89 GB used

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• What is the maximum memory that an IIS6 web site/app pool can use?

  - by Robin M

  I have an IIS 6 server running on Windows 2003 SP2 x86. The server has 4GB of RAM and runs consistently with 2GB allocated. I realise that with x86, the server won't utilize all of the 4GB RAM and the application space is also limited but the IIS processes seem to be limited elsewhere. w3wp.exe never has more than 500MB allocated and I occasionally get OutOfMemory exceptions from a busy .NET application (there are several applications running, each with a separate application pool). What is the maximum memory that an IIS6 web site/app pool can use?

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• Is a memory upgrade a viable option to fix performance issues? [closed]

  - by ratchet freak

  I'm currently seeing my PC getting bogged down by Firefox 11.0 alone with only one hundred tabs open. Resulting in a memory use of over 530M , VM size of over 800M and an insane amount of page faults (easily reaching 100 million over the course of the day). The PF delta during normal operation easily reaches 7k with peaks to 15k sometimes reaching over 20k. This leads to a (real) deterioration to response time when switching, opening and closing tabs, opening menus, typing, ... My question is: Am I right in assuming that plugging in more RAM (either adding 2x1GB or replacing the existing RAM with 2x2GB or 4x1GB) will solve this problem? My specs: Windows XP Home Edition SP3 (32 bit) Intel Core Duo 2,4 GHz 2x512MB RAM 800MHz DDR2 (dual channel) 4MB unified cache 320GB HDD Intel G33 (X3100) onboard graphics (no graphics card but PCI express x16 slot is available)

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