diff options
| -rw-r--r-- | module/spl/spl-kmem.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/module/spl/spl-kmem.c b/module/spl/spl-kmem.c index 0d1da4378..0a9d77534 100644 --- a/module/spl/spl-kmem.c +++ b/module/spl/spl-kmem.c @@ -81,7 +81,17 @@ unsigned int spl_kmem_cache_max_size = 32; module_param(spl_kmem_cache_max_size, uint, 0644); MODULE_PARM_DESC(spl_kmem_cache_max_size, "Maximum size of slab in MB"); +/* + * For small objects the Linux slab allocator should be used to make the most + * efficient use of the memory. However, large objects are not supported by + * the Linux slab and therefore the SPL implementation is preferred. A cutoff + * of 16K was determined to be optimal for architectures using 4K pages. + */ +#if PAGE_SIZE == 4096 +unsigned int spl_kmem_cache_slab_limit = 16384; +#else unsigned int spl_kmem_cache_slab_limit = 0; +#endif module_param(spl_kmem_cache_slab_limit, uint, 0644); MODULE_PARM_DESC(spl_kmem_cache_slab_limit, "Objects less than N bytes use the Linux slab"); |