On Fri, Sep 20, 2013 at 06:46:59AM -0700, tip-bot for Vladimir Davydov wrote:Commit-ID: 7e3115ef5149fc502e3a2e80719dba54a8e7409dHi Vladimir,
Gitweb:http://git.kernel.org/tip/7e3115ef5149fc502e3a2e80719dba54a8e7409d
Author: Vladimir Davydov<vdavydov@xxxxxxxxxxxxx>
AuthorDate: Sat, 14 Sep 2013 19:39:46 +0400
Committer: Ingo Molnar<mingo@xxxxxxxxxx>
CommitDate: Fri, 20 Sep 2013 11:59:39 +0200
sched/balancing: Fix cfs_rq->task_h_load calculation
Patch a003a2 (sched: Consider runnable load average in move_tasks())
sets all top-level cfs_rqs' h_load to rq->avg.load_avg_contrib, which is
always 0. This mistype leads to all tasks having weight 0 when load
balancing in a cpu-cgroup enabled setup. There obviously should be sum
of weights of all runnable tasks there instead. Fix it.
FYI, Here we found a 17% netperf regression by this patch. Here are some
changed stats between this commit 7e3115ef5149fc502e3a2e80719dba54a8e7409d
and it's parent(3029ede39373c368f402a76896600d85a4f7121b)