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| author | gjb <gjb@FreeBSD.org> | 2012-05-12 18:10:27 +0000 |
|---|---|---|
| committer | gjb <gjb@FreeBSD.org> | 2012-05-12 18:10:27 +0000 |
| commit | 1f9ce5f4a106d2a030f3613016cd6e3cd5cf9502 (patch) | |
| tree | 35175b431bdce4913c03559cf3babf609623ccd0 /share/man/man4/igb.4 | |
| parent | eea7bbf83f25236c02868752c2e0885329b722dd (diff) | |
| download | FreeBSD-src-1f9ce5f4a106d2a030f3613016cd6e3cd5cf9502.zip FreeBSD-src-1f9ce5f4a106d2a030f3613016cd6e3cd5cf9502.tar.gz | |
Docuement requirement to alter some sysctls when using igb(4) with
jumbo frames.
PR: 153738
Submitted by: Tom Judge (tom!tomjudge.com)
Discussed with: jfv (in part, a long time ago...)
MFC after: 1 week
Diffstat (limited to 'share/man/man4/igb.4')
| -rw-r--r-- | share/man/man4/igb.4 | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/share/man/man4/igb.4 b/share/man/man4/igb.4 index 169d057..f487048 100644 --- a/share/man/man4/igb.4 +++ b/share/man/man4/igb.4 @@ -31,7 +31,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 11, 2011 +.Dd May 12, 2012 .Dt IGB 4 .Os .Sh NAME @@ -160,6 +160,14 @@ 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 kern.ipc.nmbclusters +The maximum number of mbuf clusters allowed. +If the system has more than one igb card or jumbo frames are +enabled, this value will need to be increased. +.It Va kern.ipc.nmbjumbo9k +The maximum number of mbuf 9k jumbo clusters allowed. +Increasing this to allow for at least 8192 extra clusters +per interface can allow for an mtu of 8192. .El .Sh FILES .Bl -tag -width /dev/led/igb* |
