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Date: Tue, 22 May 2007 18:52:37 -0500 From: linas@...tin.ibm.com (Linas Vepstas) To: Jeff Garzik <jgarzik@...ox.com>, Andrew Morton <akpm@...l.org> Cc: cbe-oss-dev@...abs.org, netdev@...r.kernel.org, linuxppc-dev@...abs.org, Florin Malita <fmalita@...il.com> Subject: [PATCH 10/10] spidernet: increase the NAPI weight Another way of minimizing the likelyhood of RX ram from overflowing is to empty out the entire rx ring every chance we get. Change the crazy watchdog timeout from 50 seconds to 3 seconds, while we're here. Signed-off-by: Linas Vepstas <linas@...tin.ibm.com> ---- drivers/net/spider_net.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) Index: netdev-2.6/drivers/net/spider_net.h =================================================================== --- netdev-2.6.orig/drivers/net/spider_net.h 2007-05-22 18:03:24.000000000 -0500 +++ netdev-2.6/drivers/net/spider_net.h 2007-05-22 18:03:43.000000000 -0500 @@ -56,8 +56,13 @@ extern char spider_net_driver_name[]; #define SPIDER_NET_RX_CSUM_DEFAULT 1 -#define SPIDER_NET_WATCHDOG_TIMEOUT 50*HZ -#define SPIDER_NET_NAPI_WEIGHT 64 +#define SPIDER_NET_WATCHDOG_TIMEOUT 3*HZ + +/* We really really want to empty the ring buffer every time, + * so as to avoid the RX ram full bug. So set the napi weight + * to the ring size. + */ +#define SPIDER_NET_NAPI_WEIGHT SPIDER_NET_RX_DESCRIPTORS_DEFAULT #define SPIDER_NET_FIRMWARE_SEQS 6 #define SPIDER_NET_FIRMWARE_SEQWORDS 1024 - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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