SLUB: Improve hackbench speed
authorChristoph Lameter <clameter@sgi.com>
Fri, 21 Dec 2007 22:37:37 +0000 (14:37 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Fri, 21 Dec 2007 23:51:07 +0000 (15:51 -0800)
Increase the mininum number of partial slabs to keep around and put
partial slabs to the end of the partial queue so that they can add
more objects.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/slub.c

index b9f37cb0f2e6a61d80eeca2b3c9dc3799e863bce..3655ad359f03b7a776b93fc3bc192d683400859b 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -172,7 +172,7 @@ static inline void ClearSlabDebug(struct page *page)
  * Mininum number of partial slabs. These will be left on the partial
  * lists even if they are empty. kmem_cache_shrink may reclaim them.
  */
-#define MIN_PARTIAL 2
+#define MIN_PARTIAL 5
 
 /*
  * Maximum number of desirable partial slabs.
@@ -1613,7 +1613,7 @@ checks_ok:
         * then add it.
         */
        if (unlikely(!prior))
-               add_partial(get_node(s, page_to_nid(page)), page);
+               add_partial_tail(get_node(s, page_to_nid(page)), page);
 
 out_unlock:
        slab_unlock(page);