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freedreno/ir3: Reduce compiler thread pool size

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With the current scheme, looking at game startup which should be the
worst case (most heavily loaded) time for the compiler threads, and they
seem to be ~10% busy.  Furthermore we typically have a mix of "big" and
"LITTLE" cores.. with about half being "big".  So sizing the thread pool
to the half the # of CPU cores seems reasonable.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19387>
This commit is contained in:
Rob Clark 2022-10-31 07:59:32 -07:00 • committed by Marge Bot
parent a6e4f8d03f
commit e090e313fa
1 changed files with 1 additions and 1 deletions
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src/gallium/drivers/freedreno/ir3/ir3_gallium.c
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@ -556,7 +556,7 @@ ir3_screen_init(struct pipe_screen *pscreen)
* big cores. OTOH if they are sitting idle, maybe it is useful to
* use them?
*/
unsigned num_threads = sysconf(_SC_NPROCESSORS_ONLN) - 1;
unsigned num_threads = sysconf(_SC_NPROCESSORS_ONLN) / 2;
/* Create at least one thread - even on single core CPU systems. */
num_threads = MAX2(1, num_threads);