From: Paul Turner <pjt@google.com>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@elte.hu>, Mike Galbraith <efault@gmx.de>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [patch 0/2] Fix interactivity buglet with autogroup and shares distribution re-write
Date: Wed, 15 Dec 2010 19:10:16 -0800 [thread overview]
Message-ID: <20101216031016.186364650@google.com> (raw)
This should address the interactivity issues reported by Mike Galbraith:
https://lkml.org/lkml/2010/11/28/47
The root cause turns out to be a mis-ordering of weight updates and accounting
outstanding execution time.
This is fixed by making update_curr() 'atomic' once more with respect to
accounting, this allows us to then make sure any outstanding time is charged in
the re-weight path (prior to the actual update).
Thank-you to everyone for their patience while we tracked this down,
- Paul
next reply other threads:[~2010-12-16 3:12 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-16 3:10 Paul Turner [this message]
2010-12-16 3:10 ` [patch 1/2] sched: move periodic share updates to entity_tick() Paul Turner
2010-12-16 11:03 ` Peter Zijlstra
2010-12-16 14:26 ` Mike Galbraith
2011-01-10 23:49 ` Paul Turner
2011-01-11 0:47 ` Paul Turner
2010-12-20 8:36 ` [tip:sched/core] sched: Move " tip-bot for Paul Turner
2010-12-16 3:10 ` [patch 2/2] sched: charge unaccounted run-time on entity re-weight Paul Turner
2010-12-16 3:35 ` Paul Turner
2010-12-16 3:36 ` Paul Turner
2010-12-16 3:38 ` Paul Turner
2010-12-16 11:03 ` Peter Zijlstra
2010-12-16 22:31 ` Paul Turner
2010-12-17 12:38 ` Peter Zijlstra
2010-12-20 8:37 ` [tip:sched/core] sched: Fix interactivity bug by charging " tip-bot for Paul Turner
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