From: Lee Revell <rlrevell@joe-job.com>
To: Serge Noiraud <serge.noiraud@bull.net>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>
Subject: Re: RT : 2.6.12rc5 + realtime-preempt-2.6.12-rc5-V0.7.47-15
Date: Tue, 31 May 2005 15:47:04 -0400 [thread overview]
Message-ID: <1117568825.23283.5.camel@mindpipe> (raw)
In-Reply-To: <1117551231.19367.48.camel@ibiza.btsn.frna.bull.fr>
On Tue, 2005-05-31 at 16:53 +0200, Serge Noiraud wrote:
> I have a test program which made a loop in RT to mesure the system
> perturbation.
> It works finely in a tty environment.
> When I run it in an X environment ( xterm ), I get something like if I
> click the Enter key in the active window.
> If I open a new xterm, this is the new active window which receive these
> events.
> These events stop when the program stop.
>
> I tried with X in RT and no RT : I have the problem.
Try adding:
Option "NoAccel"
to the Driver section of your X config.
Some buggy video drivers can stall the PCI bus for tens or hundreds of
*milliseconds*. The "via" driver had this problem until I identified
the problem and the Unichrome guys fixed it. If it goes away with
"NoAccel", then you are having the same problem.
For details search the unichrome-devel archives for "losing interrupts".
Lee
next prev parent reply other threads:[~2005-05-31 19:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-31 14:53 RT : 2.6.12rc5 + realtime-preempt-2.6.12-rc5-V0.7.47-15 Serge Noiraud
2005-05-31 19:47 ` Lee Revell [this message]
2005-06-01 8:07 ` Serge Noiraud
2005-06-01 8:23 ` Ingo Molnar
2005-06-01 12:02 ` Serge Noiraud
2005-06-01 13:09 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2005-06-06 12:12 Serge Noiraud
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