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authorJesse Brandeburg <jesse.brandeburg@intel.com>2006-09-27 12:54:17 -0700
committerAuke Kok <juke-jan.h.kok@intel.com>2006-09-27 12:54:17 -0700
commita4d3c54024beff40d4e5e4647ad212696e0ea354 (patch)
treef4affd0d4b44f211718009818709b15238fca812 /drivers/net/ixgb
parent793fab727324adc90a0a2889f2b1d88bae4790eb (diff)
ixgb: combine more rx descriptors to improve performance
We experimented with more descriptor buffer writebacks and found that values larger than 8 give HW problems, but 8 is safe and gives us some improved performance. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Diffstat (limited to 'drivers/net/ixgb')
-rw-r--r--drivers/net/ixgb/ixgb.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ixgb/ixgb.h b/drivers/net/ixgb/ixgb.h
index a1a7f3b4a62f..50ffe90488ff 100644
--- a/drivers/net/ixgb/ixgb.h
+++ b/drivers/net/ixgb/ixgb.h
@@ -111,7 +111,7 @@ struct ixgb_adapter;
#define IXGB_RXBUFFER_16384 16384
/* How many Rx Buffers do we bundle into one write to the hardware ? */
-#define IXGB_RX_BUFFER_WRITE 4 /* Must be power of 2 */
+#define IXGB_RX_BUFFER_WRITE 8 /* Must be power of 2 */
/* only works for sizes that are powers of 2 */
#define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))