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Update man page for igb(4) with a little bit of information about

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hw.igb.num_queues for those so inclined.

PR:		kern/177384
Submitted by:	hiren.panchasara@gmail.com
Reviewed by:	sbruno@
Approved by:	jfv@
Obtained from:	Yahoo! Inc.
MFC after:	2 weeks
This commit is contained in:
sbruno 2013-04-03 21:55:19 +00:00
parent 20a2c3e096
commit 2ca30a8c10
2 changed files with 8 additions and 2 deletions
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7
share/man/man4/igb.4
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@ -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 4096.
.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

3
sys/dev/e1000/if_igb.c
View File

@ -375,7 +375,8 @@ SYSCTL_INT(_hw_igb, OID_AUTO, header_split, CTLFLAG_RDTUN, &igb_header_split, 0,
/*
** 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);