From: Petr Vandrovec <vandrove@vc.cvut.cz>
To: Andy Carlson <naclos@swbell.net>
Cc: Mark Hahn <hahn@coffee.psychology.mcmaster.ca>,
linux-kernel@vger.kernel.org
Subject: Re: Matrox FB console driver
Date: Thu, 26 Apr 2001 03:44:41 +0200 [thread overview]
Message-ID: <20010426034441.M1125@ppc.vc.cvut.cz> (raw)
In-Reply-To: <Pine.LNX.4.10.10104232117410.30211-100000@coffee.psychology.mcmaster.ca> <Pine.LNX.4.20.0104240616170.244-100000@bigandy>
In-Reply-To: <Pine.LNX.4.20.0104240616170.244-100000@bigandy>; from naclos@swbell.net on Tue, Apr 24, 2001 at 06:19:31AM -0500
On Tue, Apr 24, 2001 at 06:19:31AM -0500, Andy Carlson wrote:
> time prime before x
> real 1m23.535s
> user 0m40.550s
> sys 0m42.980s
>
> time prime in X
> real 0m42.835s
> user 0m41.180s
> sys 0m1.710s
There can be two reasons:
(1) You are using matrox's mga module. They have
'program chip core to production level frequency
instead of bios safe one' in their changelog.
Although difference 100% makes (2) more probably.
(2) matroxfb does not try to activate any AGP transfer
mode. Maybe some X driver tries and succeeds.
You can try:
time dd if=/dev/zero of=/dev/fb0 bs=1M count=8
before X and after X. If times are same, then it is
chip core frequency. If times are 2:1, it is either
chip memory freqency, or AGP...
Petr Vandrovec
vandrove@vc.cvut.cz
next prev parent reply other threads:[~2001-04-26 1:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.10.10104232117410.30211-100000@coffee.psychology.mcmaster.ca>
2001-04-24 11:19 ` Andy Carlson
2001-04-24 18:30 ` [lkml]Re: " thunder7
2001-04-26 1:44 ` Petr Vandrovec [this message]
2001-04-24 1:06 Andy Carlson
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