On Tue, Jul 24, 2007 at 09:13:47PM +0200, Andi Kleen wrote:
> You have slab debugging enabled. That makes everything slow.
> It costs you ~66% of your CPU time. Disable it.
Past peak for the day, but this does look like the culprit. Thanks
to all who replied.
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I'm in the process up upgrading a pool of apache servers from
2.6.17.8 to 2.6.21.5, and we're seeing a pretty major change in behavior.
Under identical network load, 2.6.21 has a load average more than 3 times
higher, cpu 0 spends well over 90% of its time in interrupts (vs ~30%
under
I'm in the process up upgrading a pool of apache servers from
2.6.17.8 to 2.6.21.5, and we're seeing a pretty major change in behavior.
Under identical network load, 2.6.21 has a load average more than 3 times
higher, cpu 0 spends well over 90% of its time in interrupts (vs ~30%
under
On Tue, Jul 24, 2007 at 09:13:47PM +0200, Andi Kleen wrote:
You have slab debugging enabled. That makes everything slow.
It costs you ~66% of your CPU time. Disable it.
Past peak for the day, but this does look like the culprit. Thanks
to all who replied.
-
To unsubscribe from this
Reproducable, every time nfs-kernel-server exits:
nfsd: unexporting all filesystems
BUG: unable to handle kernel paging request at virtual address 6b6b6b6f
printing eip:
f92a7751
*pde = 6b6b6b6b
Oops: [#1]
PREEMPT SMP
Modules linked in: xt_tcpudp iptable_nat nf_nat
Reproducable, every time nfs-kernel-server exits:
nfsd: unexporting all filesystems
BUG: unable to handle kernel paging request at virtual address 6b6b6b6f
printing eip:
f92a7751
*pde = 6b6b6b6b
Oops: [#1]
PREEMPT SMP
Modules linked in: xt_tcpudp iptable_nat nf_nat
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