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| author | Nick Piggin <nickpiggin@yahoo.com.au> | 2005-09-10 00:26:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-10 10:06:23 -0700 |
| commit | 5969fe0618051e8577316555a81a6e44b7b7d640 (patch) | |
| tree | 09ca92684811017901bb08d8d3a76c52022ef34d /fs/afs/cell.c | |
| parent | e17224bf1d01b461ec02a60f5a9b7657a89bdd23 (diff) | |
| download | op-kernel-dev-5969fe0618051e8577316555a81a6e44b7b7d640.zip op-kernel-dev-5969fe0618051e8577316555a81a6e44b7b7d640.tar.gz | |
[PATCH] sched: HT optimisation
If an idle sibling of an HT queue encounters a busy sibling, then make
higher level load balancing of the non-idle variety.
Performance of multiprocessor HT systems with low numbers of tasks
(generally < number of virtual CPUs) can be significantly worse than the
exact same workloads when running in non-HT mode. The reason is largely
due to poor scheduling behaviour.
This patch improves the situation, making the performance gap far less
significant on one problematic test case (tbench).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/afs/cell.c')
0 files changed, 0 insertions, 0 deletions
