diff options
| -rw-r--r-- | tests/i915/gem_shrink.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/tests/i915/gem_shrink.c b/tests/i915/gem_shrink.c index 023db8c5..e8a814fe 100644 --- a/tests/i915/gem_shrink.c +++ b/tests/i915/gem_shrink.c @@ -426,6 +426,7 @@ igt_main int num_processes = 0; igt_fixture { + const int ncpus = sysconf(_SC_NPROCESSORS_ONLN); uint64_t mem_size = intel_get_total_ram_mb(); int fd; @@ -434,16 +435,16 @@ igt_main /* * Spawn enough processes to use all memory, but each only - * uses half the available mappable aperture ~128MiB. + * uses half of the available per-cpu memory. * Individually the processes would be ok, but en masse * we expect the shrinker to start purging objects, * and possibly fail. */ - alloc_size = gem_mappable_aperture_size(fd) / 2; - num_processes = 1 + (mem_size / (alloc_size >> 20)); + alloc_size = (mem_size + ncpus - 1) / ncpus / 2; + num_processes = ncpus + (mem_size / alloc_size); - igt_info("Using %d processes and %'lluMiB per process\n", - num_processes, (long long)(alloc_size >> 20)); + igt_info("Using %d processes and %'"PRIu64"MiB per process\n", + num_processes, alloc_size); intel_require_memory(num_processes, alloc_size, CHECK_SWAP | CHECK_RAM); |