Date: Tue, 29 May 2012 16:50:08 GMT From: Ziyan Maraikar <ziyanm@gmail.com> To: freebsd-bugs@FreeBSD.org Subject: Re: amd64/168342: mbuf exhaustion hangs all daemons in keglimit state Message-ID: <201205291650.q4TGo8K1089553@freefall.freebsd.org>
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The following reply was made to PR kern/168342; it has been noted by GNATS. From: Ziyan Maraikar <ziyanm@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-amd64@freebsd.org, FreeBSD-gnats-submit@freebsd.org, Darshana Jayasinghe <darshana.jayasinghe@gmail.com> Subject: Re: amd64/168342: mbuf exhaustion hangs all daemons in keglimit state Date: Tue, 29 May 2012 22:14:02 +0530 Hello John, Thanks for the response. >=20 > Have you tried increasing kern.ipc.nmbclusters? Alternatively, have = you tried=20 > restricting igb to only using 1 queue? It sounds like all your igb = interfaces=20 > are allocating all of your mbuf clusters for their receive rings. >=20 I found this very suggestion on several mailing list discussions [1] and = set these values on Saturday. kern.ipc.nmbclusters=3D"131072" hw.igb.num_queues=3D"2" So far everything seems to back to normal, and netstat -m shows plenty = of headroom now.=20 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. [1] http://osdir.com/ml/freebsd-stable/2012-02/msg00563.html __ Regards Ziyan.=
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