Re: hackbench regression since 2.6.25-rc

[Christoph Lameter]

Here is a patch to just not perform refills but switch slabs instead. 
Could check what effect doing so has on the statistics you see on the 16p?

---
 mm/slub.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c	2008-03-14 16:49:36.000000000 -0700
+++ linux-2.6/mm/slub.c	2008-03-14 16:50:04.000000000 -0700
@@ -1474,10 +1474,7 @@ static void *__slab_alloc(struct kmem_ca
 		goto new_slab;
 
 	slab_lock(c->page);
-	if (unlikely(!node_match(c, node)))
-		goto another_slab;
-
-	stat(c, ALLOC_REFILL);
+	goto another_slab;
 
 load_freelist:
 	object = c->page->freelist;
--
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