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• Automatically clear cache of all major browsers installed

  - by MorganTiley

  I would like a way to clear cache from all my locally installed browsers - quickly and easily. A simple utility that would ask "Clear all browser caches?" with Yes/No. Just the major browsers -IE, Firefox, Safari, Chrome and optionally Opera I understand CCleaner can do this but it is not as simple as I would like (as it has other functions as well). I tried googling/stacking and couldn't find anything.

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• DNS queries to compromise DNS cache [on hold]

  - by Chris

  The transaction ID for DNS queries can take values from 1 to 65,536 and my computer pseudorandomly chooses one for each DNS request. If I sents 1,024 false replies per request, how many requests should I trigger to compromise the DNS cache with probability 99%? or as close tot hat as I can get. Thanks I'm getting a result of .6 requests which doesn't seem right to me. Feel as though it should be around 30

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• how to clear Window DNS cache

  - by Stevko

  My router reset and my ip address changed. DynDNS was updated with the new address automatically. But windows still pings the old address. How do I clear the DNS cache in Windows Vista?

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• CPU, Memory, Network, IO resources are under utilized when I tried various JMeter load testing

  - by Jaiganesh

  CPU, Memory, Network, IO resources are under utilized when I tried various JMeter load testing. I have given below the details. Hardware: 1 Core with 2 GB RAM OS: Ubuntu 12.04 LTS Server Edition Application: PHP (using JQuery, Ajax) JMeter Parameters: 10, 20, 30, 40 Hits per minute 220 Test Cases per hit 2.03 MB per hit I am not clear, why these resources are under utilized. Please help me to resolve this.

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• Using SSD as disk cache

  - by casualcoder

  Is there software for Linux to use an SSD as disk cache? I believe that Sun does something like this with ZFS, though not sure. A quick search provides nothing suitable. The goal would be to put frequently requested files on the SSD on-the-fly. Since the SSD has more capacity than RAM for less money and better performance than hard disk, this should provide an efficient performance boost.

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• Finder Using Nearly 100% CPU

  - by jerwood

  I'm having a problem where the Finder uses WAY too much CPU time. It's using up to 100% of one of my cores. I'm running 10.6.2 on a MacBook Pro w/ 6GB of RAM, plenty of fast (SSD) disk space. I also run DropBox and BackBlaze. I've tried disabling my third party stuff (DropBox and BackBlaze), but that doesn't seem to help. It's killing my battery life!

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• Looking for CPU/GPU Temperature Monitor with Live Logging

  - by Nick Gotch

  I'm looking for a CPU/GPU temperature monitor with live logging that's also free. This question recommended some good software but doesn't meet my needs. I tried HWMonitor and it works great except it doesn't have live logging. I need live logging because the system I'm using seems to overheat and shutdown (assuming it's related to overheating) and I'd like to catch the failing point.

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• CPU on ubuntu goes crazy

  - by n179911

  Hi, I am running ubuntu 9.10. At the sudden the CPU goes crazy and when I do top, it is used by a command called 'dd' and it is run by USER 'root'. It keeps going to for 15 minutes. Can you please tell what is it doing? and if I can kill it by reboot my machine? Thank you.

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• agent.exe / Macrovision Software Manager Agent eats CPU

  - by Jakob

  agent.exe process (with the description "Macrovision Software Manager Agent") needs 30-50% CPU usage. After killing the process, it starts again some seconds later. My virus scanner (OfficeScan) does not report any viruses. Does anyone have an idea how to resolve it?

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• Remove deleted posts from central google reader cache

  - by bogdanbrudiu

  After posting some test blog entries, I then remove them from my blog. however, once loaded by google reader, they never disappear from it. Even if I sign up to my blog feed from a different account, they still appear, so it seems that they are centrally cached by google reader. How can I force google reader to delete them from cache?

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• Turn off additional cpu cores while on battery

  - by Chris McGrath

  I'm currently an running a quad core processor on windows 7 and was wondering if there is a way to turn off unneeded cpu cores while I'm running on battery to extend battery life it would be nice to do this automatically but will also accept way to it manually if there is no way to do it automatically either in windows or through management software I've searched on the internet and haven't been able to find anything to this effect on google

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• Header precendence: Apache Vs. PHP specific to cache-control & expires

  - by David

  My companies production dynamic web servers ( Apache + PHP 5.1x) are using the Apache expires module and there is a clause inside http.conf as follows: <FilesMatch ".+"> ExpiresActive On ExpiresDefault "A0" </FilesMatch> If I were to set inside a php script "Cache-Control" and "Expires", would it get eaten by this clause? Normally I would test this on my own but having trouble convincing the Expires module to function on my workstation and the company Admin's are down at the data-center.

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• What parameter in perfmon shows disk cache size?

  - by skevar7

  I need the same value as shown in Task Manager under the name "Cached". I tried "Memory/Cache Bytes", but it only shows 50 MBytes, while task manager shows 738 MBytes cached. And it doesn't grow up, when I copy files. So this counter is something different. Any ideas?

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• Windows Media Player Network Sharing eating lots of CPU

  - by reyjavikvi

  There is a process, wmpnetwk.exe, which sometimes goes crazy and starts eating like 60-70% CPU. If I kill the process it just comes back again, so the only solution I've found is to stop the WMPNetworkSvc service, which makes the whole thing stop. I don't use WMP, so I don't care if this is disabled, but I'd like to know what's causing it (Google has revealed that it also happened to other people), and if there's a more permanent way of fixing the problem.

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• ESX3.5 Performance CPU wait counter

  - by shearlynot

  After looking at various vms on several ESX hosts I notice that the CPU wait counter is always hovering around the 95-100% mark. Is this normal? I can't seem to find many good resources regarding this counter. Thanks in advance.

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• Clearing cmd.exe memory or cache

  - by Abs

  The main question is how do I clear the command prompts memory or cache. I ran this on cmd.exe svn info <URL> Which prompted me a for a username and password which I entered. I then logged off and logged back in immediately and I entered that same command and I wasn't asked for a username and password. I want to clear this to test something without restarting my server! How can I do this?

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• Deleting large no of files on linux eats up CPU

  - by Sanjay

  I generate more than 50GB of cache files on my RHEL server (and typical file size is 200kb so no of files is huge). When I try to delete these files it takes 8-10 hours. However, the bigger issue is that the system load goes to critical for these 8-10 hours. Is there anyway where I can keep the system load under control during the deletion. I tried using nice -n19 rm -rf * but that doesn't help in system load.

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• How to clear DNS cache in Ubuntu?

  - by Igoru

  I'm having problems related to DNS solving in my Ubuntu 9.10. Prior complaining to my ISP I would like to refresh my local DNS cache, like in Windows we do ipconfig /flushdns. How can I do that in Ubuntu?

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• Linux CPU Hog report

  - by bmaynard

  I am wondering if there is a tool that will monitor all the process and send a daily report of which process where hogging resources per hour or something similar? What I am after is when I see my cpu go up at certain times of the day, I want to know which processes where using the resources at that time.

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• Varnish send while cache

  - by osmano807

  I wanted the varnish download the file to the cache while sends to client. From what I am seeing, it first download and then send the file, and that with very large files, is slow. (sorry for english, I'm using an online translator.)

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• MySQL query cache is enabled but not being used

  - by Yoga

  I've checked the query cache is enabled mysql> SHOW VARIABLES LIKE 'have_query_cache'; +------------------+-------+ | Variable_name | Value | +------------------+-------+ | have_query_cache | YES | +------------------+-------+ 1 row in set (0.00 sec) But seems it is not being used mysql> SHOW STATUS LIKE 'Qcache%'; +-------------------------+----------+ | Variable_name | Value | +-------------------------+----------+ | Qcache_free_blocks | 1 | | Qcache_free_memory | 16759648 | | Qcache_hits | 0 | | Qcache_inserts | 0 | | Qcache_lowmem_prunes | 0 | | Qcache_not_cached | 21555882 | | Qcache_queries_in_cache | 0 | | Qcache_total_blocks | 1 | +-------------------------+----------+ 8 rows in set (0.00 sec) Any reason?

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• Where is the OWA cache

  - by chris

  Where does Outlook Web Access cache attachments? Is there a folder similar to Content.Outlook for OWA?

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• Attaching strace to 100% CPU Apache process - output

  - by knef

  I am having a problem with Apache2 spawning processes that use 100% CPU. Attaching strace to one of such processes produces no output sometimes and sometimes gives this: 2672 17:18:07 poll([{fd=14, events=POLLIN|POLLPRI}], 1, 0) = 0 (Timeout) 2672 17:18:07 write(14, "\236\3\0\0\3SELECT FLOOR(((price_index."..., 930) = 930 2672 17:18:07 read(14, "\1\0\0\1\2\33\0\0\2\3def\0\0\0\5range\0\f?\0\r\0\0\0\10\0"..., 16384) = 85 I would be grateful for any ideas as to interpreting the above.

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• NGINX Cache Viewstate and Cookies

  - by user42833

  We are running NGINX 7.65 on a Ubuntu 10 server. NGINX is setup as a reverse proxy to an IIS website where the viewstate is passed through the headers. We want to set up the cache feature in NGINX but need to make sure it does not mess up the viewstate and cookies associated with each individual customer. Will adding this to the nginx.conf file fix this - proxy_pass_header Header or is there more that would need to be done? Thanks,

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• Safe to disable compile options for Nginx (when used only as reverse proxy/cache)

  - by Alex

  I have read that I can do this to make a smaller footprint Nginx when used as static content cache/reverse proxy: --without-mail_pop3_module --without-mail_imap_module --without-mail_smtp_module What other options are safe to disable? SSI, FastCGI? Others? The only requirements for the reverse proxy is to be able to do https and gzip compression. Will disabling all the module really help with footprint and/or performance?

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