From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sven-Thorsten Dietrich <thebigcorporation@gmail.com>
Subject: Re: At a loss: Kernel 2.6.19-rt15 with ixp425
Date: Wed, 09 Jun 2010 19:25:22 -0700
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Cc: Eric W Anderson <Eric.Anderson@colorado.edu>,
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To: Xianghua Xiao <xiaoxianghua@gmail.com>
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On Wed, 2010-06-09 at 13:50 -0500, Xianghua Xiao wrote:

> while upgrading to newer kernel sounds great, which I just did(from
> 2.6.18rt to 2.6.33rt), the newer kernel sometimes does not perform as
> well as older ones(plus it's also bloated), esp in embedded products.
> In my case, we got a slower product with the newer kernel, the 'worse'
> performance happened immediately when CFS was added. Even after a long
> time debugging and tweaking, it's still there.
> 
> xianghua

I am sure if you provided some specific code or performance data to
substantiate that regression someone here (or on LKML) would take
interest.

Regards

Sven