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From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Jack Steiner <steiner@sgi.com>, Robin Holt <holt@sgi.com>,
	tglx@linutronix.de, davej@redhat.com, yinghan@google.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] x86: Reduce clock calibration time during slave cpu startup
Date: Sat, 6 Aug 2011 08:58:20 +0200	[thread overview]
Message-ID: <20110806065820.GF13220@elte.hu> (raw)
In-Reply-To: <CAE9FiQWAmjTWGBLrqH9+_AH316Br-McW=PrSyiDWCtSYndL07w@mail.gmail.com>


* Yinghai Lu <yhlu.kernel@gmail.com> wrote:

> On Fri, Aug 5, 2011 at 6:16 AM, Jack Steiner <steiner@sgi.com> wrote:
> > Aside from the bogus comment (I'll send a V3 with a fixed comment), does the patch
> > look ok.
> 
> Several months ago, Robin said that he will test updated version
> 
> [PATCH] x86: Make calibrate_delay run in parallel.
> 
> so any reason that you sgi guyes stop that path?

Running calibration in parallel is pretty stupid: cores/threads might 
impact each other and there might be a lot of avoidable noise in the 
results.

Thanks,

	Ingo

  reply	other threads:[~2011-08-06  6:59 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-27 13:57 [PATCH] x86: Reduce clock calibration time during slave cpu startup Jack Steiner
2011-07-27 14:05 ` Dave Jones
     [not found]   ` <20110727141527.GA8453@sgi.com>
     [not found]     ` <20110727155200.GA25381@redhat.com>
2011-08-01 18:45       ` [PATCH v2] " Jack Steiner
2011-08-05 10:46         ` Ingo Molnar
2011-08-05 13:13           ` Jack Steiner
2011-08-05 13:16           ` Jack Steiner
2011-08-05 21:38             ` Ingo Molnar
2011-08-07  0:36               ` Matthew Garrett
2011-08-08 20:44                 ` Jack Steiner
2011-08-09 15:06                 ` Ingo Molnar
2011-08-09 15:18                   ` Matthew Garrett
2011-08-11 20:14                     ` [PATCH v3] " Jack Steiner
2011-08-06  0:21             ` [PATCH v2] " Yinghai Lu
2011-08-06  6:58               ` Ingo Molnar [this message]
2011-08-06 10:51               ` Robin Holt
2011-08-06 14:39               ` Jack Steiner
2011-08-26 23:56 ` [PATCH] " Andrew Morton
2011-08-26 23:57   ` Andrew Morton
2011-08-29 15:04   ` Jack Steiner

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