diff options
Diffstat (limited to 'man/man5')
| -rw-r--r-- | man/man5/spl-module-parameters.5 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/man/man5/spl-module-parameters.5 b/man/man5/spl-module-parameters.5 index 2ec5b668e..5b7ee8325 100644 --- a/man/man5/spl-module-parameters.5 +++ b/man/man5/spl-module-parameters.5 @@ -123,6 +123,28 @@ Default value: \fBKMALLOC_MAX_SIZE/4\fR. .sp .ne 2 .na +\fBspl_kmem_cache_magazine_size\fR (uint) +.ad +.RS 12n +Cache magazines are an optimization designed to minimize the cost of +allocating memory. They do this by keeping a per-cpu cache of recently +freed objects, which can then be reallocated without taking a lock. This +can improve performance on highly contended caches. However, because +objects in magazines will prevent otherwise empty slabs from being +immediately released this may not be ideal for low memory machines. +.sp +For this reason \fBspl_kmem_cache_magazine_size\fR can be used to set a +maximum magazine size. When this value is set to 0 the magazine size will +be automatically determined based on the object size. Otherwise magazines +will be limited to 2-256 objects per magazine (i.e per cpu). Magazines +may never be entirely disabled in this implementation. +.sp +Default value: \fB0\fR. +.RE + +.sp +.ne 2 +.na \fBspl_hostid\fR (ulong) .ad .RS 12n |