From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: "'Ingo Molnar'" <mingo@elte.hu>, "Paul Jackson" <pj@engr.sgi.com>
Cc: <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 18:31:47 -0700 [thread overview]
Message-ID: <200504040131.j341Vlg31981@unix-os.sc.intel.com> (raw)
In-Reply-To: <20050403142959.GB22798@elte.hu>
Ingo Molnar wrote on Sunday, April 03, 2005 7:30 AM
> how close are these numbers to the real worst-case migration costs on
> that box?
I booted your latest patch on a 4-way SMP box (1.5 GHz, 9MB ia64). This
is what it produces. I think the estimate is excellent.
[00]: - 10.4(0) 10.4(0) 10.4(0)
[01]: 10.4(0) - 10.4(0) 10.4(0)
[02]: 10.4(0) 10.4(0) - 10.4(0)
[03]: 10.4(0) 10.4(0) 10.4(0) -
---------------------
cacheflush times [1]: 10.4 (10448800)
One other minor thing: when booting a numa kernel on smp box, there is
a numa scheduler domain at the top level and cache_hot_time will be set
to 0 in that case on smp box. Though this will be a mutt point with
recent patch from Suresh Siddha for removing the extra bogus scheduler
domains. http://marc.theaimsgroup.com/?t=111240208000001&r=1&w=2
next prev parent reply other threads:[~2005-04-04 1:32 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 [this message]
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
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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