Re: Strange load spikes on 2.4.19 kernel

Anton Blanchard (anton@samba.org)
Sun, 13 Oct 2002 18:59:38 +1000

> I'll let you in on a dirty little secret. The Linux file system does
> not utilize SMP. That's right. All file processes go through one and
> only one processor. It has to do with the fact that the Linux kernel is
> a non-preemptive kernel.

My 24 way SMP disagrees with your analysis:

http://samba.org/~anton/linux/2.5.40/dbench/

Thats just ext2. dbench is a filesystem benchmark that is heavy on
inode/block allocation.

Please show us your profiles which show linux filesystems do not
utilise SMP.

Anton
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