From: Peter Chubb <peter@chubb.wattle.id.au>
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Date: Mon, 5 Jan 2004 14:46:34 +1100
Cc: Soeren Sonnenburg <kernel@nn7.de>,
       Linux Kernel <linux-kernel@vger.kernel.org>
To: Willy TARREAU <willy@w.ods.org>
Subject: Re: xterm scrolling speed - scheduling weirdness in 2.6 ?!
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>>>>> "Willy" == Willy TARREAU <willy@w.ods.org> writes:
> >> So it is like 30 times slower on 2.6. when running for the first
> >> time...  this also happens if I do e.g. find ./ and watch the
> >> output pass by...
>> 
>> For some processes, allowing interrupts back on (hdparm -u1) helps;
>> for others, switching to the deadline elevator helps; neither are
>> complete solutions.

Willy> This is not I/O related since the problem happens even with
Willy> simple programs such as dmesg and seq.

Yes ... the first time you run a program it's fetched from disc and
shows a significant slowdown.  Second and subsequent times, it runs at
normal speed.  At least, that's what *I'm* seeing.

Peter C


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