Ram upgrade inlinux
Hi,
I have upgraded the RAM from 2GB to 8GB in my Linux machine and swap space is around 4GB.. still my system performance is slow.. please help me how can i increase my system performance ..... I use CentOS5... |
You must be doing some serious graphic stuff to need to ramp up to that much memory . . .
- try Reducing the /swap partition to below 1Gb - say 512Mb as with that much memory - it's way too big. |
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You might be able to remove some unused or uneeded modules/software to increase preformance as well. Quote:
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What are you experiencing as performing slowly? Games, graphics window managers? Because there are some things that in my experience dont move quickly no matter how much hardware you throw at them. KDE for instance.
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Make sure you have the correct graphics drivers installed.
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Run "top" or other task monitor as root. Find out which process is wasting your RAM or resources. Once you know what is wrong, you will have a base to fix it.
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Try grabbing the KDE System Monitor (my favorite sysmonitor) and check for memory/CPU usage. If nothing shows up there you could try running a performance benchmark and see if HD read/write speed has anything to do with it.
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I wonder why nobody asks what exactly is the purpose of this machine? Is it a desktop machine, a server, a numbercruncher, ... .
Also, how did you determine that your RAM is the bottleneck slowing down the machine? |
With that much RAM, the swap file probably won't be used at all. Run df and see if it is, I'll bet there's almost no usage. Just what aspect of the system is "slow"? The GUI? Response time? Is the hard disk busy all the time? Have you tried a different desktop to see if there's a difference? Your system should not be "slow". I've not found any recent version of Linux to be "slow" on any reasonable hardware, with KDE or not. Try turning off effects and see what happens.
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My machine is not slow by any means (AMD Phenom II X 4 955), but I recently increased my RAM from 4 GB to 8 GB and saw absolutely NO gain in speed on my machine using Linux. Now my Windows 7 partition is a different story. I saw some gain there because Windows is a resource hog. My Solus OS runs about 335MB at idle while Windows runs around 1600MB. I think you will have to look elsewhere in your machine to find what is running slow. Like in my case it's probably your hard drive. I want to go SSD soon.
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[dean@localhost ~]$ free total used free shared buffers cached Mem: 8181888 8007288 174600 0 88164 6058108 -/+ buffers/cache: 1861016 6320872 Swap: 4400124 24 4400100 [dean@localhost ~]$ |
Your swap space should always be double the size of your RAM. Having 8 GB of RAM should have 16 GB of swap space allocated. Change the swap and check for the status.
Thanks Buy lace |
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