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• Drop caches in Linux

  - by BerserkEVA

  I have an embedded Geode-based application server with 512MB RAM and I'm about to try to maximize free memory during applications workload, which uses MySQL database 5.5 with InnoDB quite aggressively. As part of the whole optimization I'd want to introduce echo 1 > /proc/sys/vm/drop_caches sleep 5 echo 0 > /proc/sys/vm/drop_caches in crontab. How often is it safe to execute something like this? Any other observation/suggestion is welcome.

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• how much user can my web server have with the specified hardware

  - by vipul

  i want to implement a cloud computing model with some nodes each node having limited hardware (specifications are 1.6ghz 400mb ram 10gb disk and 100gb bandwidth) how much users it can bear simultaneously without crashing down.... pls help

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• Users take over a minute to log onto a 2008 windows server. LSM.exe running at 100MB+ memory.

  - by seanyboy

  We've a 64bit Windows Server 2008 running Remote Desktop. The application lsm.exe (the local session manager) appears to be leaking memory. Although the memory usage is quite low when the server is rebooted, this continues to climb until people can no longer log in. The server has no audio card and does not have any AV software installed. The server is fully service packed. (Service pack 2) What could be causing this, and how would I fix it?

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• Is it feasible to build a home Plug PC cluster?

  - by Zubair

  Is it possible to build a performant cluster for the home based on something like a plug pc: http://www.marvell.com/platforms/plug_computer/ I realise the Marvell Plug PC is not very powerful but in a couple of years I could imagine them starting to get dual cores and more RAM

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• MSSQLServer2008\Instance, Why?

  - by Ice

  Hi, im aware of the possibility to create instances but i don't know a real good reason to do it. This way one has per definition at least two sqlserver services running, but what for should this be good? The two instances have to share all the ressouces mainly the RAM. If you have to rename the server you will end up with an access like \NEWSQLServer\OldInstanceName. So what is the case for instances?

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• Average memory used on a LAMP server

  - by Calvin L

  How much memory (RAM) would the average LAMP production server use, assuming little-to-no traffic, barebones except Apache2, PHP 5.3, MySQL5 installed and running?

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• Can my PC run Need for Speed Shift

  - by John

  Here are my PC's specs: Operating System MS Windows 7 32-bit CPU Intel Mobile Core 2 Duo T8100 @ 2.10GHz Penryn 45nm Technology RAM 3.0GB Dual-Channel DDR2 @ 332MHz 5-5-5-15 Motherboard Sony Corporation VAIO (N/A) Graphics Nvidia Defaul @ 1280x800 256MB GeForce 8400M GT (Sony) Hard Drives 250GB Hitachi Hitachi HTS542525K9SA00 ATA Device (IDE) Optical Drives Optiarc DVD RW AD-7560A ATA Device Audio High Definition Audio Device

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• How to make a dial up connection disconnect automatically after downloading + uploading 90 MB data in Windows?

  - by Shanky

  I am using a modem (ZTE USB Modem FFF1) to connect to internet and I want it to disconnect automatically after completing 90 MB (Downloaded data + Uploaded Data). Can anyone suggest how can I do this. I am using a desktop computer running on Windows 8 Consumer Preview. There's no router. I am using a dial up connection to connect. I just want to limit the data usage of my internet connection, considering sent data + received data.

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• Periodic Slowdowns During Games

  - by Daniel

  Hi, I am having trouble with my laptop. A problem that happens is a slowdown that occurs every 5 minutes or so (problem can be seen during games). The fan will start to speed up and the laptop will slow down to about 50% of its original fps. This will persist for about 30 seconds and then continue back. Here are my specs: Intel T3400 (2.16GHz, 2 cores, 1M cache) 3 GB RAM (PC2-5300 333MHz) Mobile Intel 4 Series Express (1.26 GB VRAM)

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• 3 Monitors on GTX 460 and P7H55-PRO

  - by Ahren

  I have a dual monitor setup on my GTX 460. I'd like to use the integrated graphics combo of my P7H55-PRO + I3 550 to display a 3rd monitor. This won't be used for gaming, just for more work space. Is it possible? The integrated display adapter won't show up in the device manager at all. The monitor is plugged in and powered, and working, but doesn't show up in display settings. OS = Windows 7 64bit RAM = 8GB

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• What are optimal strategies for using mapreduce and other applications on the same server?

  - by user45532

  I have two applications that I need to run continuously to process data. 1.) An app that processes and aggregates information from sources 2.) A mapreduce workflow* that processes the above info I've thought about either getting vps hosting or getting my own inexpensive server and using xen to split the resources of the server. Getting a quad core box with 2 GB of Ram seems a lot cheaper than the grid options I've seen at slicehost, rackspace and others...

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• run a 2nd computer as an extra processor

  - by MMK

  I have a laptop with a busted l.c.d., but otherwise works fine with an external monitor. I was wondering if it is possible to connect it to my main pc as an extra processor(main pc is getting old, it's only single core processor) and if so how? I currently have them connected with a network cable so that I can access the laptop's hard drive but would like to use it to give my pc a bit more power. Both my pc and my laptop have 2 gb ram and are running windows vista sp2

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• Current trends in Random Access Memory speed [closed]

  - by Vetal

  As I know for now because of laws of Physics there will be not any tangible improvements in CPU cycles per second for the nearest future. However because of Von Neumann bottleneck it seems to not be an issue for non-server applications. So what about RAM, is there any upcoming technologies that promise to improve memory speed or we are stack with the current situation till quantum computers will come out from labs?

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• visual studio crashes

  - by amrut

  i brought compaq cq40 330tu laptop one month back its config is intel core 2 duo 2.0 GHz,2gb ddr2 ram,160 hardisk i installed microsoft visual studio a weeek back when i try to open as asp.net solution my laptops gets hanged and stops responding i am using win xp sp2 as os plz help me i am really in bad condition as i cant do my project waiting 4 ur help

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• Which server would you purchase? IBM x3550 or Dell R610?

  - by Harry

  I'm in the market for a single unit rack mounted server with a strong upgrade pathway. The two servers on the top of my wish list are: IBM x3550 M2 Express Followed by Dell R610 Ultimately I want to have a Dual Quad Xeon (2 Ghz+) server with loads of RAM for a top notch DB server. The database is likely to keep growing indefinitly so a snappy Raid 5 array of Harddrives will be essential. Which would you purchase?

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• how Infiniband speed is related to processor speed

  - by user223231

  I have two exactly the same servers and very curious how to make Infiniband interconnection between them? Both servers' basic specs are: CPU: 32GHz = 2x Intel Xeon X5650, 6 core, 2.66GHz and RAM: 24GB per server (edited) How determine what speed of Infiniband will be enough for perfect interconnection? SDR, DDR, QDR or FDR? My logic is 32Ghz = 32Gb/s and 40Gb one is enough, am I right or it is not that simple?

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• Is there any benefit to running OSX (Snow Leopard) in 64 bit mode?

  - by jaydles

  I know I can force it to boot into 64-bit kernel by holding down the 6 and 4 keys during the boot process. I also know that some extensions still don't run in 64-bit mode. So the question is what might I gain by running in 64-bit mode? If it matters, I have the brand new 2010 15" MBP with the faster processer and 8GB of RAM.

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• SHH running two commands at once?

  - by matthewsteiner

  So I want to run apache benchmark but while it's running, I need to run htop to see the memory and cpu usage. How can I do that? Putty (My ssh client) won't let me type in a command until ab is done running. Ideas?

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• advantage of 64 bit os on system with only 2Gb

  - by Nrew

  Im using windows 7 ultimate 32-bit. With 64-bit processor. Will I get any performance benefits if ever I upgrade to 64-bit windows 7, with the same memory(ram) of 2Gb. The same hdd size 250Gb

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• On unix, i have multiple sites on one dedicated server. Is there a way to tell which sites take up m

  - by nixnub

  My cpu avg usage is about 0.25-0.3. Is there any way to find out from apache what sites/domains are taking up most of those resources? i'm on centos

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• SSD: NTFS vs EXT4

  - by Joshua

  Always when I read about SSD usage under Linux, the advice is to disable journalling in Ext4 (or use Ext2), since it's too bad for your SSD. But in all articles about SSD tweaks for Windows, I never see any mentions that you should disable NTFS journalling, or that you should stick to FAT32. I know Ext4's journaling is more advanced, but is it so much more damaging to a SSD than that of NTFS? Or are Linux users just a little bit more cautious?

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• What is the go-to way of configuring PHP with Nginx

  - by Kyle

  I've heard many good things about Nginx lately, and I wanted to put it on my slicehost server. I am in a fix for ram, and would like to get Wordpress and wp-super-cache configured. I was just wondering the 'recommended way' of get PHP setup, because I see so many webpages saying their way is correct. No compiling if possible please, it makes updating a drag D=

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• Tracking high useage sites in Apache on CentOS

  - by nixnub

  My CPU average usage is about 0.25 - 0.3. Is there any way to find out from apache which sites/domains are taking up most of those resources? I'm on CentOS

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• Enabling Squid delay pool eats up the entire memory

  - by Supratik

  I am using "squid-3.1.8-1.el5" in my CentOS 5 32 bit system. In normal condition Squid uses 85m - 90m, but when I enable the delay pool parameters the memory usage suddenly rise up 2GB. The memory keeps on increasing until the system is out of resource. The following are my delay pool settings: delay_pools 1 delay_class 1 1 delay_access 1 allow all delay_parameters 1 192000/192000 Is there anything I am missing here or is it a bug with Squid ?

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• How would Crossfire 2x Radeon HD 4770 compare against a single video card?

  - by Citizen

  I'm looking to pick up a used computer. It is a Phenom 955 + 4 gigs of ram + Crossfire 2x Radeon HD 4770. How would this Crossfire combo compare to a single video card?

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