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Re: severe I/O performance issues on 2.4.22 SMP system

On Sat, 1 Nov 2003 07:38, Daniel Erat wrote:
> The server has a SuperMicro Super P4DP6 motherboard with dual Xeon
> 2.4Ghz processors and 4 GB of RAM.  One of the two onboard Adaptec 7899P
> SCSI chipsets is being used to control a disk that has the OS, and a

My experience is that the kernel.org kernel performs very badly under heavy 
disk IO when you have 4G of RAM.  There are patches to fix this, I can't 
remember which ones they are (and I couldn't find the patches on their own 
when I looked).

I solved this before by using a SUSE kernel source tree, but a Red Hat kernel 
source tree has the same patches.

http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page

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