Ubuntu
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  1. Bug #1713576
  2. Comment #16

Comment 16 for bug 1713576

Revision history for this message
bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2017-10-30 16:55 EDT-------
Thanks, I verified the fix in -proposed dramatically reduces unnecessary migrations as expected and improves performance using an underutilized ebizzy testcase.

with previous kernel:
4.10.0-34-generic
5,640 sched:sched_migrate_task

with -proposed kernel:
4.10.0-38-generic
516 sched:sched_migrate_task

testcase was run on a 32core system:
# perf stat -a -r 5 -e sched:sched_migrate_task ./ebizzy -t 35 -S 100