diff options
| author | Peter Zijlstra <[email protected]> | 2011-12-07 15:07:31 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2011-12-21 10:34:44 +0100 |
| commit | 518cd62341786aa4e3839810832af2fbc0de1ea4 (patch) | |
| tree | bd28f7fce47887e9c5d33bd772c8380255ef3065 /tools/perf/scripts/python/sctop.py | |
| parent | 612ef28a045efadb3a98d4492ead7806a146485d (diff) | |
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 <[email protected]>
Reported-by: Mike Galbraith <[email protected]>
Acked-by: Suresh Siddha <[email protected]>
Acked-by: Mike Galbraith <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Chris Mason <[email protected]>
Cc: Dave Kleikamp <[email protected]>
Link: http://lkml.kernel.org/r/1323338531.17673.7.camel@twins
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions