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Diffstat (limited to 'manual/tunables.texi')
| -rw-r--r-- | manual/tunables.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/manual/tunables.texi b/manual/tunables.texi index 28ff502990..9ca6e3f603 100644 --- a/manual/tunables.texi +++ b/manual/tunables.texi @@ -270,6 +270,16 @@ pointer, so add 4 on 32-bit systems or 8 on 64-bit systems to the size passed to @code{malloc} for the largest bin size to enable. @end deftp +@deftp Tunable glibc.malloc.hugetlb +This tunable controls the usage of Huge Pages on @code{malloc} calls. The +default value is @code{0}, which disables any additional support on +@code{malloc}. + +Setting its value to @code{1} enables the use of @code{madvise} with +@code{MADV_HUGEPAGE} after memory allocation with @code{mmap}. It is enabled +only if the system supports Transparent Huge Page (currently only on Linux). +@end deftp + @node Dynamic Linking Tunables @section Dynamic Linking Tunables @cindex dynamic linking tunables |