Reduce writeback threshold by 1. We were instructing the hardware to wait until the 17th descriptor which went over the cache line limit.
Signed-off-by: Jesse Brandeburg <[EMAIL PROTECTED]> Signed-off-by: Auke Kok <[EMAIL PROTECTED]> --- drivers/net/ixgb/ixgb_main.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index 7bbd447..770eef2 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -140,12 +140,12 @@ module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); /* some defines for controlling descriptor fetches in h/w */ -#define RXDCTL_WTHRESH_DEFAULT 16 /* chip writes back at this many or RXT0 */ -#define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below - * this */ -#define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail - * is pushed this many descriptors - * from head */ +#define RXDCTL_WTHRESH_DEFAULT 15 /* chip writes back at this many or RXT0 */ +#define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below + * this */ +#define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail + * is pushed this many descriptors + * from head */ /** * ixgb_init_module - Driver Registration Routine -- Auke Kok <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
