diff options
| author | Brian Behlendorf <[email protected]> | 2011-03-29 22:38:53 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2011-04-06 20:06:03 -0700 |
| commit | 83150861e610701d44510816e2062bcf407f51ab (patch) | |
| tree | a23e4cc4f59881d7faafce6254004ba2fc5b8dac /include/sys/kmem.h | |
| parent | 3336e29cc2e328c6e665de9f4563aa8a4b874194 (diff) | |
Decrease target objects per slab
By decreasing the number of target objects per slab we increase
the likelyhood that a slab can be freed. This reduces the level
of fragmentation in the slab which has been observed to be a
problem for certain workloads. The penalty for this is that we
also decrease the speed which need objects can be allocated.
Diffstat (limited to 'include/sys/kmem.h')
| -rw-r--r-- | include/sys/kmem.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sys/kmem.h b/include/sys/kmem.h index d3972f1ca..72f70c282 100644 --- a/include/sys/kmem.h +++ b/include/sys/kmem.h @@ -334,7 +334,7 @@ extern struct rw_semaphore spl_kmem_cache_sem; #define SPL_KMEM_CACHE_DELAY 15 /* Minimum slab release age */ #define SPL_KMEM_CACHE_REAP 0 /* Default reap everything */ -#define SPL_KMEM_CACHE_OBJ_PER_SLAB 32 /* Target objects per slab */ +#define SPL_KMEM_CACHE_OBJ_PER_SLAB 16 /* Target objects per slab */ #define SPL_KMEM_CACHE_OBJ_PER_SLAB_MIN 8 /* Minimum objects per slab */ #define SPL_KMEM_CACHE_ALIGN 8 /* Default object alignment */ |