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Commit 6cef67a0 authored by Ayaz Abdulla's avatar Ayaz Abdulla Committed by David S. Miller
Browse files

forcedeth: performance changes 



This patch modifies the throughput mode poll settings to reduce the
number of interrupts. This is only used by older hardware that need a
timer irq in throughput mode.

Secondly, this patch increases the default rx ring from 128 to 512. This
drastically improves bandwidth utilization for small packets sizes i.e
512 bytes.

Signed-off-by: default avatarAyaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4145ade2

drivers/net/forcedeth.c

+2 −2
Original line number Diff line number Diff line
@@ -128,7 +128,7 @@ enum { 
 * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms

 */

	NvRegPollingInterval = 0x00c,

#define NVREG_POLL_DEFAULT_THROUGHPUT	970 /* backup tx cleanup if loop max reached */

#define NVREG_POLL_DEFAULT_THROUGHPUT	65535 /* backup tx cleanup if loop max reached */

#define NVREG_POLL_DEFAULT_CPU	13

	NvRegMSIMap0 = 0x020,

	NvRegMSIMap1 = 0x024,
@@ -463,7 +463,7 @@ union ring_type { 
/* General driver defaults */

#define NV_WATCHDOG_TIMEO	(5*HZ)



#define RX_RING_DEFAULT		128

#define RX_RING_DEFAULT		512

#define TX_RING_DEFAULT		256

#define RX_RING_MIN		128

#define TX_RING_MIN		64