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Diffstat (limited to 'manual/tunables.texi')
| -rw-r--r-- | manual/tunables.texi | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/manual/tunables.texi b/manual/tunables.texi index 23ef0d40e7..d72d7a5ec0 100644 --- a/manual/tunables.texi +++ b/manual/tunables.texi @@ -432,7 +432,11 @@ set shared cache size in bytes for use in memory and string routines. @deftp Tunable glibc.cpu.x86_non_temporal_threshold The @code{glibc.cpu.x86_non_temporal_threshold} tunable allows the user -to set threshold in bytes for non temporal store. +to set threshold in bytes for non temporal store. Non temporal stores +give a hint to the hardware to move data directly to memory without +displacing other data from the cache. This tunable is used by some +platforms to determine when to use non temporal stores in operations +like memmove and memcpy. This tunable is specific to i386 and x86-64. @end deftp |