[CentOS] Adding RAM

Matt lm7812 at gmail.com
Mon Dec 8 15:13:32 UTC 2008


>> He should be able to replace the kernel via rpm -e and rpm -i
>>
>> That said, I doubt he'll actually see a benefit.
>> PAE is slow.
>> If you want to see a real performance-gain, install 5.2 x86-64.
>>
> You will only see a gain if the machine is swapping, otherwise more ram
> through PAE could even be slower. Maybe up to 5% slower depending on the
> machines bios and memory bus speed.

I don't think I am swapping very much.

Linux server.XXXX.net 2.6.9-78.0.8.ELsmp #1 SMP Wed Nov 19 20:05:04
EST 2008 i686 i686 i386 GNU/Linux

top - 09:11:33 up 16 days, 14:52,  2 users,  load average: 10.19, 18.29, 23.17
Tasks: 158 total,   2 running, 152 sleeping,   0 stopped,   4 zombie
Cpu0  :  5.3% us,  4.0% sy,  0.0% ni, 81.5% id,  9.3% wa,  0.0% hi,  0.0% si
Cpu1  : 11.3% us,  8.3% sy,  0.0% ni,  1.7% id, 78.1% wa,  0.7% hi,  0.0% si
Mem:   8309188k total,  4761352k used,  3547836k free,   451464k buffers
Swap:  2031608k total,      192k used,  2031416k free,  1564316k cached

Matt


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