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From: Paul Jackson <pj@engr.sgi.com>
To: Andy Lutomirski <luto@myrealbox.com>
Cc: kenneth.w.chen@intel.com, torvalds@osdl.org,
	nickpiggin@yahoo.com.au, akpm@osdl.org,
	linux-kernel@vger.kernel.org
Subject: Re: [patch] sched: auto-tune migration costs [was: Re: Industry db benchmark result on recent 2.6 kernels]
Date: Sun, 3 Apr 2005 21:36:36 -0700	[thread overview]
Message-ID: <20050403213636.05cddf52.pj@engr.sgi.com> (raw)
In-Reply-To: <4250C19F.9070801@myrealbox.com>

Andy wrote:
> Not that I really know what I'm talking about here, but this sounds 
> highly parallelizable.

I doubt it.  If we are testing the cost of a migration between CPUs
alpha and beta, and at the same time testing betweeen CPUs gamma and
delta, then often there will be some hardware that is shared by both the
<alpha, beta> path, and the <gamma, delta> path.  This would affect the
test results.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@engr.sgi.com> 1.650.933.1373, 1.925.600.0401

  reply	other threads:[~2005-04-04  4:38 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-02  1:00 Industry db benchmark result on recent 2.6 kernels Chen, Kenneth W
2005-04-02  2:12 ` Nick Piggin
2005-04-02 14:53 ` [patch] sched: auto-tune migration costs [was: Re: Industry db benchmark result on recent 2.6 kernels] Ingo Molnar
2005-04-02 21:22   ` Paul Jackson
2005-04-03  5:53   ` Paul Jackson
2005-04-03  7:04     ` Ingo Molnar
2005-04-03  8:15       ` Paul Jackson
2005-04-03 11:34       ` Paul Jackson
2005-04-03 14:12         ` Paul Jackson
2005-04-03 15:01           ` Ingo Molnar
2005-04-03 22:30             ` Paul Jackson
2005-04-05  6:53               ` [patch] sched: auto-tune migration costs Andi Kleen
2005-04-05  7:20                 ` Paul Jackson
2005-04-03 15:24           ` [patch] sched: auto-tune migration costs [was: Re: Industry db benchmark result on recent 2.6 kernels] Ingo Molnar
2005-04-03 23:08             ` Paul Jackson
2005-04-04  2:08               ` Nick Piggin
2005-04-04  3:55                 ` Paul Jackson
2005-04-04  5:45                   ` Ingo Molnar
2005-04-04  5:50                     ` Paul Jackson
2005-04-04  5:56                   ` Nick Piggin
2005-04-04  6:38                     ` Paul Jackson
2005-04-04  6:48                       ` Ingo Molnar
2005-04-04  7:37                         ` Paul Jackson
2005-04-04  6:50               ` Ingo Molnar
2005-04-04  7:27                 ` Paul Jackson
2005-04-03 14:29         ` Ingo Molnar
2005-04-03 23:15           ` Paul Jackson
2005-04-04  1:31           ` Chen, Kenneth W
2005-04-04  6:24             ` Ingo Molnar
2005-04-04  6:39               ` Ingo Molnar
2005-04-06  0:08               ` Chen, Kenneth W
2005-04-04  4:25         ` Andy Lutomirski
2005-04-04  4:36           ` Paul Jackson [this message]
2005-04-04  1:11       ` Chen, Kenneth W
2005-04-04 11:37         ` Ingo Molnar
2005-04-04 17:27           ` Paul Jackson
2005-04-05  1:43           ` Chen, Kenneth W
2005-04-05  1:49             ` Ingo Molnar
2005-04-05  3:04               ` Ingo Molnar
2005-04-06  3:33                 ` Chen, Kenneth W
2005-04-06  6:45                   ` Ingo Molnar
2005-04-08  2:27                     ` Chen, Kenneth W
2005-04-03  9:01     ` Paul Jackson

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