diff options
| author | sbruno <sbruno@FreeBSD.org> | 2013-04-03 21:55:19 +0000 |
|---|---|---|
| committer | sbruno <sbruno@FreeBSD.org> | 2013-04-03 21:55:19 +0000 |
| commit | 2ca30a8c108d4e822c53fb9365399f844e2f944c (patch) | |
| tree | a100cb05454695a304f9579af44e6ae688d97503 | |
| parent | 20a2c3e0967d22c7dcb946bcc528adf4f3c2800f (diff) | |
| download | FreeBSD-src-2ca30a8c108d4e822c53fb9365399f844e2f944c.zip FreeBSD-src-2ca30a8c108d4e822c53fb9365399f844e2f944c.tar.gz | |
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@gmail.com
Reviewed by: sbruno@
Approved by: jfv@
Obtained from: Yahoo! Inc.
MFC after: 2 weeks
| -rw-r--r-- | share/man/man4/igb.4 | 7 | ||||
| -rw-r--r-- | sys/dev/e1000/if_igb.c | 3 |
2 files changed, 8 insertions, 2 deletions
diff --git a/share/man/man4/igb.4 b/share/man/man4/igb.4 index f487048..06eb4fd 100644 --- a/share/man/man4/igb.4 +++ b/share/man/man4/igb.4 @@ -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 diff --git a/sys/dev/e1000/if_igb.c b/sys/dev/e1000/if_igb.c index 03c5123..51fbbd4 100644 --- a/sys/dev/e1000/if_igb.c +++ b/sys/dev/e1000/if_igb.c @@ -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); |
