On Wed, 12 Sep 2001, safemode wrote:
> X compiled almost without error. glxinfo had some issues as seen below. But
> my major concern is the shm performance on a gcc 3.0.2 (dri enabled) X.
> This is before. X (cvs 4.1.99.1) is compiled with 2.95.4, so is the kernel
> (linux 2.4.9-ac10). Using a Matrox G450 with full hardware accelleration.
> 16bpp @ 1280x1024.
> 240 reps @ 23.0818 msec ( 43.3/sec): ShmPutImage XY 500x500 square
>
> This is after. X (cvs 4.1.99.1) is compiled with 3.0.2, so is the kernel
> (linux 2.4.9-ac10). Again, using the same X configuration.
> 80 reps @ 71.0311 msec ( 14.1/sec): ShmPutImage XY 500x500 square
You're not benchmarking "shm performance". XY putimage is a
complicated operation. Whether or not the data is in shared memory
is likely a minor contributor to the performance for this operation.
Fortunately, I don't know of a single application that uses
XY PutImage. Everybody uses the Z format.
Mark.
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