From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: "'Ingo Molnar'" <mingo@elte.hu>
Cc: "'Linus Torvalds'" <torvalds@osdl.org>,
"'Nick Piggin'" <nickpiggin@yahoo.com.au>,
"'Andrew Morton'" <akpm@osdl.org>, <linux-kernel@vger.kernel.org>
Subject: RE: Industry db benchmark result on recent 2.6 kernels
Date: Thu, 31 Mar 2005 21:14:59 -0800 [thread overview]
Message-ID: <200504010514.j315Exg26006@unix-os.sc.intel.com> (raw)
In-Reply-To: <20050401045219.GC22753@elte.hu>
Ingo Molnar wrote on Thursday, March 31, 2005 8:52 PM
> the current scheduler queue in -mm has some experimental bits as well
> which will reduce the amount of balancing. But we cannot just merge them
> an bloc right now, there's been too much back and forth in recent
> kernels. The safe-to-merge-for-2.6.12 bits are already in -BK.
I agree, please give me some time to go through these patches on our db
setup.
> the current defaults for cache_hot_time are 10 msec for NUMA domains,
> and 2.5 msec for SMP domains. Clearly too low for CPUs with 9MB cache.
> Are you increasing cache_hot_time in your experiment? If that solves
> most of the problem that would be an easy thing to fix for 2.6.12.
Yes, we are increasing the number in our experiments. It's in the queue
and I should have a result soon.
next prev parent reply other threads:[~2005-04-01 5:15 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-28 19:33 Chen, Kenneth W
2005-03-28 19:50 ` Dave Hansen
2005-03-28 20:01 ` Chen, Kenneth W
2005-03-30 0:00 ` Linus Torvalds
2005-03-30 0:22 ` Chen, Kenneth W
2005-03-30 0:46 ` Chen, Kenneth W
2005-03-30 0:57 ` Linus Torvalds
2005-03-30 1:31 ` Nick Piggin
2005-03-30 1:38 ` Chen, Kenneth W
2005-03-30 1:56 ` Nick Piggin
2005-03-31 14:14 ` Ingo Molnar
2005-03-31 19:53 ` Chen, Kenneth W
2005-03-31 20:05 ` Linus Torvalds
2005-03-31 20:08 ` Linus Torvalds
2005-03-31 22:14 ` Chen, Kenneth W
2005-03-31 23:35 ` Nick Piggin
2005-04-01 6:05 ` Paul Jackson
2005-04-01 6:34 ` Nick Piggin
2005-04-01 7:19 ` Paul Jackson
2005-04-01 6:46 ` Ingo Molnar
2005-04-01 22:32 ` Chen, Kenneth W
2005-04-01 22:51 ` Linus Torvalds
2005-04-02 2:19 ` Nick Piggin
2005-04-04 1:40 ` Kevin Puetz
2005-04-02 1:44 ` Paul Jackson
2005-04-02 2:05 ` Chen, Kenneth W
2005-04-02 2:38 ` Paul Jackson
2005-04-03 6:36 ` David Lang
2005-04-03 6:53 ` Andreas Dilger
2005-04-03 7:23 ` David Lang
2005-04-03 7:38 ` Nick Piggin
2005-04-01 6:59 ` Ingo Molnar
2005-04-01 9:29 ` Paul Jackson
2005-04-01 10:34 ` Ingo Molnar
2005-04-01 14:39 ` Paul Jackson
2005-04-01 4:52 ` Ingo Molnar
2005-04-01 5:14 ` Chen, Kenneth W [this message]
2005-04-01 22:51 ` Chen, Kenneth W
2005-04-01 16:34 Manfred Spraul
2005-04-02 1:00 Chen, Kenneth W
2005-04-02 2:12 ` Nick Piggin
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