linux-kernel - Re: [tip:sched/urgent] sched: Fix select_idle_sibling() regression in selecting an idle SMT sibling

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Message-ID: <CAGjg+kEOkkjnQQJJyGQzGApV5asM5oqvRwEr2VkJy9G5gg1rxw@mail.gmail.com>
Date:	Wed, 21 Dec 2011 20:33:16 +0800
From:	alex shi <lkml.alex@...il.com>
To:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	peterz@...radead.org, efault@....de, alex.shi@...el.com,
	suresh.b.siddha@...el.com, tglx@...utronix.de, mingo@...e.hu
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:sched/urgent] sched: Fix select_idle_sibling() regression in
 selecting an idle SMT sibling

> Fix it. Slightly bigger patch of cleaning all these goto's etc
> is queued up for the next release.
>

Even with this fix, the loopback netperf testing TCP-RR, still have
about 5% regresion on our 2 socket * 8 cores SNB machine.
which is your patchset includes all cleaning? wondering if that is helpful.
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