Message-ID: <424A0172.2010609@yahoo.com.au>
Date: Wed, 30 Mar 2005 11:31:30 +1000
From: Nick Piggin <nickpiggin@yahoo.com.au>
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To: Linus Torvalds <torvalds@osdl.org>
CC: "Chen, Kenneth W" <kenneth.w.chen@intel.com>,
       "'Andrew Morton'" <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: Industry db benchmark result on recent 2.6 kernels
References: <200503300046.j2U0keg03321@unix-os.sc.intel.com> <Pine.LNX.4.58.0503291656060.6036@ppc970.osdl.org>
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Linus Torvalds wrote:
> 
> On Tue, 29 Mar 2005, Chen, Kenneth W wrote:
> 
>>Linus Torvalds wrote on Tuesday, March 29, 2005 4:00 PM
>>
>>>The fact that it seems to fluctuate pretty wildly makes me wonder
>>>how stable the numbers are.
>>
>>I can't resist myself from bragging. The high point in the fluctuation
>>might be because someone is working hard trying to make 2.6 kernel run
>>faster.  Hint hint hint .....  ;-)
> 
> 
> Heh. How do you explain the low-point? If there's somebody out there 
> working hard on making it run slower, I want to whack the guy ;)
> 

If it is doing a lot of mapping/unmapping (or fork/exit), then that
might explain why 2.6.11 is worse.

Fortunately there are more patches to improve this on the way.

Kernel profiles would be useful if possible.

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