slub: pack objects denser

Since we now have more orders available use a denser packing.
Increase slab order if more than 1/16th of a slab would be wasted.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/slub.c b/mm/slub.c
index e2e6ba7a5172..d821ce6fff39 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1818,7 +1818,7 @@ static int slub_nomerge;
  * system components. Generally order 0 allocations should be preferred since
  * order 0 does not cause fragmentation in the page allocator. Larger objects
  * be problematic to put into order 0 slabs because there may be too much
- * unused space left. We go to a higher order if more than 1/8th of the slab
+ * unused space left. We go to a higher order if more than 1/16th of the slab
  * would be wasted.
  *
  * In order to reach satisfactory performance we must ensure that a minimum
@@ -1883,7 +1883,7 @@ static inline int calculate_order(int size)
         if (!min_objects)
                 min_objects = 4 * (fls(nr_cpu_ids) + 1);
         while (min_objects > 1) {
-                fraction = 8;
+                fraction = 16;
                 while (fraction >= 4) {
                         order = slab_order(size, min_objects,
                                                 slub_max_order, fraction);