Re: [patch 1/4] ipc: sem optimise undo list search

Manfred Spraul
2009-08-16T13:16:06Z

On 08/11/2009 01:09 PM, npiggin@suse.de wrote:
> Move last looked up sem_undo struct to the head of the task's undo list.
> Attempt to move common entries to the front of the list so search time is
> reduced. This reduces lookup_undo on oprofile of problematic SAP workload
> by 30% (see patch 4 for a description of SAP workload).
>
> Signed-off-by: Nick Piggin<npiggin@suse.de>
>
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>