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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.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-05-27 12:13:34 +02:00
parent 38bd468a78
commit 6f2947fa79
1 changed files with 4 additions and 1 deletions
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5
src/gallium/drivers/radeonsi/si_pipe.c
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@ -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",