From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, jeff@garzik.org, gospo@redhat.com,
Alexander Duyck <alexander.h.duyck@intel.com>,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Subject: [net-next PATCH 2/6] igb: reduce size required to trigger low latency
Date: Thu, 12 Feb 2009 20:17:21 -0800 [thread overview]
Message-ID: <20090213041721.3848.61896.stgit@lost.foo-projects.org> (raw)
In-Reply-To: <20090213041654.3848.39227.stgit@lost.foo-projects.org>
From: Alexander Duyck <alexander.h.duyck@intel.com>
Update the Adaptive Interrupt Moderation algorithm so that the low latency
state is triggered less easily to prevent high interrupt loads.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
drivers/net/igb/igb_main.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 1e7678c..8701330 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -2541,7 +2541,7 @@ static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting,
if (bytes > 25000) {
if (packets > 35)
retval = low_latency;
- } else if (bytes < 6000) {
+ } else if (bytes < 1500) {
retval = low_latency;
}
break;
next prev parent reply other threads:[~2009-02-13 4:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-13 4:16 [net-next PATCH 1/6] igb: misc whitespace/formatting cleanups Jeff Kirsher
2009-02-13 4:17 ` Jeff Kirsher [this message]
2009-02-16 8:06 ` [net-next PATCH 2/6] igb: reduce size required to trigger low latency David Miller
2009-02-13 4:17 ` [net-next PATCH 3/6] igb: cleanup incorrect comment and set IP Checksum Enable Jeff Kirsher
2009-02-16 8:06 ` David Miller
2009-02-13 4:18 ` [net-next PATCH 4/6] igb: misc cleanup to combine one if statement and set last_rx Jeff Kirsher
2009-02-13 13:23 ` Ben Hutchings
2009-02-14 5:43 ` David Miller
2009-02-13 4:18 ` [net-next PATCH 5/6] igb: remove unused defines Jeff Kirsher
2009-02-16 8:06 ` David Miller
2009-02-13 4:18 ` [net-next PATCH 6/6] igb: transition driver to only using advanced descriptors Jeff Kirsher
2009-02-16 8:07 ` David Miller
2009-02-16 8:06 ` [net-next PATCH 1/6] igb: misc whitespace/formatting cleanups David Miller
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