Re: [REPORT] 2.6.21 vs. 2.6.21-sd046 vs. 2.6.21-CFSv7

On Mon, Apr 30, 2007 at 03:58:45PM -0400, Bill Davidsen wrote:
Followup: I reran with sd-0.46, setting rr_interval to 40, and then 5
(default was 16). Neither appeared to give a useful video playback. I
did try setting the make to nice 10, and that made the playback
perfectly smooth, as well as response to skip forward and volume change
happening when the key was pressed instead of eventually.

I also tried raising the nice of X to -10, that made things better on
display, but I winder if it will let X run ahead of the nice-0 raid threads.

Is this my hardware or is there a really odd behavior here? The sd seems
to be too fair to cope well with this realistic load, and expecting
users to nice things is probably morally correct but unrealistic.

People have been reporting very good performance with regards to OpenGL
applications under SD. What is your video driver ? NVidia proprietary ?

OpenGL, X and direct frame buffer access (mplayer and friends) tend not
to interact each other which can result in very different scheduling
characteristics between them.

[please CC the relevant people for their own benefit]

bill

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