linux-kernel - Re: 2.6.21-rc3-mm1 RSDL results

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Date:	Sat, 10 Mar 2007 13:21:27 -0500
From:	Mark Lord <lkml@....ca>
To:	Con Kolivas <kernel@...ivas.org>
Cc:	Serge Belyshev <belyshev@...ni.sinp.msu.ru>,
	William Lee Irwin III <wli@...omorphy.com>,
	Matt Mackall <mpm@...enic.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	akpm@...ux-foundation.org
Subject: Re: 2.6.21-rc3-mm1 RSDL results

Con Kolivas wrote:
> On Saturday 10 March 2007 05:07, Mark Lord wrote:
>> Mmm.. when it's good, it's *really* good.
>> My desktop feels snappier and all of that.
>..
>> But when it's bad, it stinks.
>> Like when a "make -j2" kernel rebuild is happening in a background window
> 
> And that's bad. When you say "it stinks" is it more than 3 times slower? It 
> should be precisely 3 times slower under that load (although low cpu using 
> things like audio wont be affected by running 3 times slower). If it feels 
> like much more than that much slower, there is a bug there somewhere.

Scrolling windows is incredibly jerkey, and very very sluggish
when images are involved (eg. a large web page in firefox).

> As another reader suggested, how does it run with the compile 'niced'? How does 
> it perform with make (without a -j number).

Yes, it behaves itself when the "make -j2" is nice'd.

>> This is on a Pentium-M 760 single-core, w/2GB SDRAM (notebook).
> 
> What HZ are you running? Are you running a Beryl desktop?

HZ==1000, NO_HZ, Kubunutu Dapper Drake distro, ATI X300 open-source X.org driver.

Cheers
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