amd64/168342: mbuf exhaustion hangs all daemons in keglimit
ziyanm at gmail.com
Tue May 29 16:44:09 UTC 2012
Thanks for the response.
> Have you tried increasing kern.ipc.nmbclusters? Alternatively, have you tried
> restricting igb to only using 1 queue? It sounds like all your igb interfaces
> are allocating all of your mbuf clusters for their receive rings.
I found this very suggestion on several mailing list discussions  and set these values on Saturday.
So far everything seems to back to normal, and netstat -m shows plenty of headroom now.
The problem cropped up after running several months on 9.0-RELEASE when I brought up another interface. Disabling the new interface didn't restore normal operation, however. I also tried 8.3-RELEASE but the problem was worse on it.
More information about the freebsd-amd64