very bad, and very weird, scrolling text performance xorg 1.5.3 intel 2.5.1 GM965

Jeffrey Baker jwbaker at
Sun Dec 14 16:08:45 PST 2008

On Sun, Dec 14, 2008 at 3:48 PM, Thomas Jaeger <thjaeger at> wrote:
> You really need the glyph cache in the X server to get decent text
> performance out of the 2.5 intel driver.  The patches are pretty
> straightforward to backport, but it is my understanding that a 1.6
> server will be uploaded to jaunty soon, so you might want to wait for that.

I'm sure the glyph cache is a big help, but I don't think it's able to
explain the nonlinear performance difference between scrolling in
80x24 (nearly adequate) and 80x48 (horrifying).


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