From: Ingo Molnar <mingo@elte.hu>
To: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: nickpiggin@yahoo.com.au, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org
Subject: Re: [patch] sched: fix broken smt/mc optimizations with CFS
Date: Mon, 27 Aug 2007 21:23:24 +0200 [thread overview]
Message-ID: <20070827192324.GA29441@elte.hu> (raw)
In-Reply-To: <20070827191905.GE1894@linux-os.sc.intel.com>
* Siddha, Suresh B <suresh.b.siddha@intel.com> wrote:
> > - if (*imbalance + SCHED_LOAD_SCALE_FUZZ < busiest_load_per_task/2) {
> > + if (*imbalance + SCHED_LOAD_SCALE_FUZZ < busiest_load_per_task) {
>
> Ingo, this is still broken. This condition is always false for nice-0
> tasks..
yes - negative reniced tasks are not spread out via this - and positive
reniced tasks are spread out more easily.
Ingo
next prev parent reply other threads:[~2007-08-27 19:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-16 1:01 [patch] sched: fix broken smt/mc optimizations with CFS Siddha, Suresh B
2007-08-23 10:38 ` Ingo Molnar
2007-08-23 11:54 ` Ingo Molnar
2007-08-23 12:13 ` Ingo Molnar
2007-08-23 17:42 ` Daniel Walker
2007-08-27 19:19 ` Siddha, Suresh B
2007-08-27 19:23 ` Ingo Molnar [this message]
2007-08-27 19:31 ` Siddha, Suresh B
2007-08-28 22:27 ` Siddha, Suresh B
2007-08-29 3:42 ` Ingo Molnar
2007-09-04 23:35 ` Chuck Ebbert
2007-09-04 23:46 ` Siddha, Suresh B
2007-09-05 10:51 ` Ingo Molnar
2007-08-27 16:32 ` Torsten Kaiser
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