kern/177384: commit references a PR
dfilter service
dfilter at FreeBSD.ORG
Wed Apr 3 22:00:01 UTC 2013
The following reply was made to PR kern/177384; it has been noted by GNATS.
From: dfilter at FreeBSD.ORG (dfilter service)
To: bug-followup at FreeBSD.org
Cc:
Subject: Re: kern/177384: commit references a PR
Date: Wed, 3 Apr 2013 21:55:27 +0000 (UTC)
Author: sbruno
Date: Wed Apr 3 21:55:19 2013
New Revision: 249070
URL: http://svnweb.freebsd.org/changeset/base/249070
Log:
Update man page for igb(4) with a little bit of information about
hw.igb.num_queues for those so inclined.
PR: kern/177384
Submitted by: hiren.panchasara at gmail.com
Reviewed by: sbruno@
Approved by: jfv@
Obtained from: Yahoo! Inc.
MFC after: 2 weeks
Modified:
head/share/man/man4/igb.4
head/sys/dev/e1000/if_igb.c
Modified: head/share/man/man4/igb.4
==============================================================================
--- head/share/man/man4/igb.4 Wed Apr 3 21:34:35 2013 (r249069)
+++ head/share/man/man4/igb.4 Wed Apr 3 21:55:19 2013 (r249070)
@@ -31,7 +31,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd May 12, 2012
+.Dd March 25, 2013
.Dt IGB 4
.Os
.Sh NAME
@@ -160,6 +160,11 @@ The minimum is 80, and the maximum is 40
.It Va hw.igb.enable_aim
If set to 1, enable Adaptive Interrupt Moderation.
The default is to enable Adaptive Interrupt Moderation.
+.It Va hw.igb.num_queues
+Numer of queues used for data transfer.
+If set to 0, number of queues will be configured
+automatically based on number of CPUs and max
+supported MSI-X messages on the device.
.It Va kern.ipc.nmbclusters
The maximum number of mbuf clusters allowed.
If the system has more than one igb card or jumbo frames are
Modified: head/sys/dev/e1000/if_igb.c
==============================================================================
--- head/sys/dev/e1000/if_igb.c Wed Apr 3 21:34:35 2013 (r249069)
+++ head/sys/dev/e1000/if_igb.c Wed Apr 3 21:55:19 2013 (r249070)
@@ -375,7 +375,8 @@ SYSCTL_INT(_hw_igb, OID_AUTO, header_spl
/*
** This will autoconfigure based on
-** the number of CPUs if left at 0.
+** the number of CPUs and max supported MSI-X messages
+** if left at 0.
*/
static int igb_num_queues = 0;
TUNABLE_INT("hw.igb.num_queues", &igb_num_queues);
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