linux-kernel - Re: [git pull] scheduler fixes

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Message-ID: <20080508153343.GD7718@cs181133002.pp.htv.fi>
Date:	Thu, 8 May 2008 18:33:43 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Andi Kleen <andi@...stfloor.org>,
	Matthew Wilcox <matthew@....cx>,
	LKML <linux-kernel@...r.kernel.org>,
	Alexander Viro <viro@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Mike Galbraith <efault@....de>
Subject: Re: [git pull] scheduler fixes

On Thu, May 08, 2008 at 05:10:28PM +0200, Ingo Molnar wrote:
>...
> also includes a scheduler arithmetics fix from Mike. Find the shortlog 
> and diff below.
> 
> 	Ingo
> 
> ------------------>
>...
> Mike Galbraith (1):
>       sched: fix weight calculations
>...

The commit description says:

<--  snip  -->

...

This bug could be related to the regression reported by Yanmin Zhang:

| Comparing with kernel 2.6.25, sysbench+mysql(oltp, readonly) has lots
| of regressions with 2.6.26-rc1:
|
| 1) 8-core stoakley: 28%;
| 2) 16-core tigerton: 20%;
| 3) Itanium Montvale: 50%.

Reported-by: "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
...

<--  snip  -->

Can we get that verified and the description updated before it hits 
Linus' tree?

Otherwise this "could be related" will become unchangable metadata that 
will stay forever - no matter whether there's any relation at all.

Thanks
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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