Messages in this thread Patch in this message | | | Date | Mon, 6 Oct 2008 17:37:33 -0700 | From | Greg KH <> | Subject | [patch 04/71] ixgbe: initialize interrupt throttle rate |
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2.6.26-stable review patch. If anyone has any objections, please let us know.
------------------ From: Andy Gospodarek <andy@greyhouse.net>
commit 15e79f24b60c4b0bf8019423bda4e03a576b02f2 upstream
This commit dropped the setting of the default interrupt throttle rate.
commit 021230d40ae0e6508d6c717b6e0d6d81cd77ac25 Author: Ayyappan Veeraiyan <ayyappan.veeraiyan@intel.com> 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 <andy@greyhouse.net> Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/net/ixgbe/ixgbe_main.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2258,6 +2258,12 @@ static int __devinit ixgbe_set_interrupt 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 * than CPU's. So let's be conservative and only ask for --
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