diff options
Diffstat (limited to 'manual')
| -rw-r--r-- | manual/tunables.texi | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/manual/tunables.texi b/manual/tunables.texi index c9a4cb7fe5..3263f944c5 100644 --- a/manual/tunables.texi +++ b/manual/tunables.texi @@ -198,6 +198,14 @@ is 8 times the number of cores online. @cindex hardware capability tunables @cindex hwcap tunables @cindex tunables, hwcap +@cindex ifunc tunables +@cindex tunables, ifunc +@cindex data_cache_size tunables +@cindex tunables, data_cache_size +@cindex shared_cache_size tunables +@cindex tunables, shared_cache_size +@cindex non_temporal_threshold tunables +@cindex tunables, non_temporal_threshold @deftp {Tunable namespace} glibc.tune Behavior of @theglibc{} can be tuned to assume specific hardware capabilities @@ -213,3 +221,31 @@ extensions available in the processor at runtime for some architectures. The @code{glibc.tune.hwcap_mask} tunable allows the user to mask out those capabilities at runtime, thus disabling use of those extensions. @end deftp + +@deftp Tunable glibc.tune.ifunc +The @code{glibc.tune.ifunc=-xxx,yyy,-zzz...} tunable allows the user to +enable CPU/ARCH feature @code{yyy}, disable CPU/ARCH feature @code{xxx} +and @code{zzz} where the feature name is case-sensitive and has to match +the ones in @code{sysdeps/x86/cpu-features.h}. + +This tunable is specific to i386 and x86-64. +@end deftp + +@deftp Tunable glibc.tune.x86_data_cache_size +The @code{glibc.tune.x86_data_cache_size} tunable allows the user to set +data cache size in bytes for use in memory and string routines. + +This tunable is specific to i386 and x86-64. +@end deftp + +@deftp Tunable glibc.tune.x86_shared_cache_size +The @code{glibc.tune.x86_shared_cache_size} tunable allows the user to +set shared cache size in bytes for use in memory and string routines. +@end deftp + +@deftp Tunable glibc.tune.x86_non_temporal_threshold +The @code{glibc.tune.x86_non_temporal_threshold} tunable allows the user +to set threshold in bytes for non temporal store. + +This tunable is specific to i386 and x86-64. +@end deftp |