diff options
| author | Rik van Riel <[email protected]> | 2014-05-16 00:13:32 -0400 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2014-05-22 11:16:41 +0200 |
| commit | 096aa33863a5e48de52d2ff30e0801b7487944f4 (patch) | |
| tree | b226a5aabe9ba4f71f192c58a2ee549ddb499871 /tools/perf/util/trace-event-scripting.c | |
| parent | b1ad065e65f56103db8b97edbd218a271ff5b1bb (diff) | |
sched/numa: Decay ->wakee_flips instead of zeroing
Affine wakeups have the potential to interfere with NUMA placement.
If a task wakes up too many other tasks, affine wakeups will get
disabled.
However, regardless of how many other tasks it wakes up, it gets
re-enabled once a second, potentially interfering with NUMA
placement of other tasks.
By decaying wakee_wakes in half instead of zeroing it, we can avoid
that problem for some workloads.
Signed-off-by: Rik van Riel <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions