From: Peter Zijlstra <peterz@infradead.org>
To: Jason Low <jason.low2@hp.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>,
Paul Turner <pjt@google.com>, Ingo Molnar <mingo@kernel.org>,
Ben Segall <bsegall@google.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] sched: Reduce contention in update_cfs_rq_blocked_load
Date: Wed, 3 Sep 2014 13:32:42 +0200 [thread overview]
Message-ID: <20140903113242.GO4783@worktop.ger.corp.intel.com> (raw)
In-Reply-To: <1409643684.19197.15.camel@j-VirtualBox>
On Tue, Sep 02, 2014 at 12:41:24AM -0700, Jason Low wrote:
> On Mon, 2014-09-01 at 14:55 +0200, Peter Zijlstra wrote:
> > But yes, unbounded errors here are a problem, sure relaxing the updates
> > makes things go fast, they also make things go skew.
>
> Okay. In that case, would you like to take our original patch which
> avoids unnecessary updates?
This seems a safe patch; yes I'll queue it while we think of smarter
things :-)
next prev parent reply other threads:[~2014-09-03 11:32 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-26 23:11 Jason Low
2014-08-26 23:24 ` Paul Turner
2014-08-27 17:34 ` Jason Low
2014-08-27 23:32 ` Tim Chen
2014-08-28 19:46 ` Jason Low
2014-09-01 12:55 ` Peter Zijlstra
2014-09-02 7:41 ` Jason Low
2014-09-03 11:32 ` Peter Zijlstra [this message]
2014-09-09 14:52 ` [tip:sched/core] sched: Reduce contention in update_cfs_rq_blocked_load() tip-bot for Jason Low
2014-08-27 19:18 ` [PATCH RESULT] sched: Rewrite per entity runnable load average tracking v5 Yuyang Du
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