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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 /ChangeLog | |
| 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 'ChangeLog')
| -rw-r--r-- | ChangeLog | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 3ac07f0517..a97f09d3da 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2017-06-02 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/x86/cacheinfo.c (__x86_shared_non_temporal_threshold): + Set to the 3/4 of the total shared cache size. + 2017-06-02 Rical Jasan <ricaljasan@pacific.net> * manual/errno.texi: Remove redundant error strings. |