From 15e79f24b60c4b0bf8019423bda4e03a576b02f2 Mon Sep 17 00:00:00 2001 From: Andy Gospodarek Date: Wed, 27 Aug 2008 18:04:32 -0700 Subject: [PATCH] ixgbe: initialize interrupt throttle rate This commit dropped the setting of the default interrupt throttle rate. commit 021230d40ae0e6508d6c717b6e0d6d81cd77ac25 Author: Ayyappan Veeraiyan Date: Mon Mar 3 15:03:45 2008 -0800 ixgbe: Introduce MSI-X queue vector code The following patch adds it back. Without this the default value of 0 causes the performance of this card to be awful. Restoring these to the default values yields much better performance. This regression has been around since 2.6.25. Signed-off-by: Andy Gospodarek Acked-by: Jesse Brandeburg Signed-off-by: Jeff Kirsher CC: stable@kernel.org [2.6.25 and later] Signed-off-by: Jeff Garzik --- drivers/net/ixgbe/ixgbe_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 53f41b649f03..a417be7f8be5 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2303,6 +2303,12 @@ static int __devinit ixgbe_set_interrupt_capability(struct ixgbe_adapter int err = 0; int vector, v_budget; + /* + * Set the default interrupt throttle rate. + */ + adapter->rx_eitr = (1000000 / IXGBE_DEFAULT_ITR_RX_USECS); + adapter->tx_eitr = (1000000 / IXGBE_DEFAULT_ITR_TX_USECS); + /* * It's easy to be greedy for MSI-X vectors, but it really * doesn't do us much good if we have a lot more vectors