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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-06-02 17:32:21 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-06-02 17:32:37 -0700 |
| commit | 808fd9e6fe23f96078d4e297de1131117d3898bb (patch) | |
| tree | 76336f1f7937cfd45db787e7b659a77da655ba26 /elf/tst-deep1mod3.c | |
| parent | 3e6def237a5681387b27ac55298b3ab25a054dbf (diff) | |
| download | glibc-808fd9e6fe23f96078d4e297de1131117d3898bb.tar.gz glibc-808fd9e6fe23f96078d4e297de1131117d3898bb.tar.xz glibc-808fd9e6fe23f96078d4e297de1131117d3898bb.zip | |
x86: Update __x86_shared_non_temporal_threshold
__x86_shared_non_temporal_threshold was set to 6 times of per-core shared cache size, based on the large memcpy micro benchmark in glibc on a 8-core processor. For a processor with more than 8 cores, the threshold is too low. Set __x86_shared_non_temporal_threshold to the 3/4 of the total shared cache size so that it is unchanged on 8-core processors. On processors with less than 8 cores, the threshold is lower. * sysdeps/x86/cacheinfo.c (__x86_shared_non_temporal_threshold): Set to the 3/4 of the total shared cache size.
Diffstat (limited to 'elf/tst-deep1mod3.c')
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