Re: [linux-audio-dev] Low latency and X11 Direct Rendering

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Subject: Re: [linux-audio-dev] Low latency and X11 Direct Rendering
From: Jussi Laako (jussi.laako_AT_kolumbus.fi)
Date: Sun Jun 09 2002 - 23:00:53 EEST

Enrique Robledo Arnuncio wrote:
>
> Running latencytest I have found a quite bad behaviour with the high
> X11 load test when the X server has the DRI module loaded and active.
>
> Is anyone there using DRI and lowlatency-patch at the same time?
>
> Have you experienced this kind of problems?
>
> Any known solution? I use OpenGL for real time visualization of audio,
> and it is not nice if I need to disable HW accel!!!

Yes, I have made some lowlatency additions to Matrox and ATI drivers.
At least latencies caused by my ATI Radeon dropped from ~100 ms to < 1 ms.
The -ll version contains full lowlatency + lowlatency DRM.

See http://uworld.dyndns.org/projects/linux/

        - Jussi Laako 

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