So S390 has NUMA and the minalign is allowing very small slabs of 8/16/32 bytes?
Try this patch
From: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Subject: SLUB: Allow full duplication of kmalloc array for 390
Seems that S390 is running out of kmalloc caches.
Increase the number of kmalloc caches to a safe size.
Signed-off-by: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/slub_def.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/include/linux/slub_def.h
===================================================================
--- linux-2.6.orig/include/linux/slub_def.h 2010-05-27 09:14:16.000000000 -0500
+++ linux-2.6/include/linux/slub_def.h 2010-05-27 09:14:26.000000000 -0500
@@ -140,7 +140,7 @@ struct kmem_cache {
#ifdef CONFIG_ZONE_DMA
#define SLUB_DMA __GFP_DMA
/* Reserve extra caches for potential DMA use */
-#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT - 6)
+#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT)
#else
/* Disable DMA functionality */
#define SLUB_DMA (__force gfp_t)0
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>