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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-12-07 15:07:31 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-21 10:34:44 +0100 |
| commit | 518cd62341786aa4e3839810832af2fbc0de1ea4 (patch) | |
| tree | bd28f7fce47887e9c5d33bd772c8380255ef3065 /drivers/macintosh/therm_adt746x.c | |
| parent | 612ef28a045efadb3a98d4492ead7806a146485d (diff) | |
| download | linux-518cd62341786aa4e3839810832af2fbc0de1ea4.tar.gz | |
sched: Only queue remote wakeups when crossing cache boundaries
Mike reported a 13% drop in netperf TCP_RR performance due to the new remote wakeup code. Suresh too noticed some performance issues with it. Reducing the IPIs to only cross cache domains solves the observed performance issues. Reported-by: Suresh Siddha <suresh.b.siddha@intel.com> Reported-by: Mike Galbraith <efault@gmx.de> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Chris Mason <chris.mason@oracle.com> Cc: Dave Kleikamp <dave.kleikamp@oracle.com> Link: http://lkml.kernel.org/r/1323338531.17673.7.camel@twins Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/macintosh/therm_adt746x.c')
0 files changed, 0 insertions, 0 deletions