Module: Mesa
Branch: master
Commit: 6f2947fa79f9480934b17cc913a8bcdfbe9ffe45
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=6f2947fa79f9480934b17cc913a8bcdfbe9ffe45
Author: Marek Olšák <marek.ol...@amd.com>
Date: Sat May 27 12:13:34 2017 +0200
radeonsi: decrease the number of compiler threads to num CPUs - 1
Reserve one core for other things (like draw calls).
Reviewed-by: Nicolai Hähnle <nicolai.haeh...@amd.com>
---
src/gallium/drivers/radeonsi/si_pipe.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c
b/src/gallium/drivers/radeonsi/si_pipe.c
index bbb5ea660d..0c2f6b37db 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -882,8 +882,11 @@ struct pipe_screen *radeonsi_screen_create(struct
radeon_winsys *ws)
return NULL;
}
- /* Only enable as many threads as we have target machines and CPUs. */
+ /* Only enable as many threads as we have target machines, but at most
+ * the number of CPUs - 1 if there is more than one.
+ */
num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+ num_cpus = MAX2(1, num_cpus - 1);
num_compiler_threads = MIN2(num_cpus, ARRAY_SIZE(sscreen->tm));
if (!util_queue_init(&sscreen->shader_compiler_queue, "si_shader",
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