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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 /stdlib/bits/stdlib.h | |
| parent | 3e6def237a5681387b27ac55298b3ab25a054dbf (diff) | |
| download | 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 'stdlib/bits/stdlib.h')
0 files changed, 0 insertions, 0 deletions