Date: Thu, 28 Aug 2014 07:02:18 -0400 From: Mike Tancsa <mike@sentex.net> To: "Eggert, Lars" <lars@netapp.com>, FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: igb "requests for mbufs denied" Message-ID: <53FF0C3A.4000501@sentex.net> In-Reply-To: <B170AAF8-E59B-4758-BF68-A0B18430B0AD@netapp.com> References: <B170AAF8-E59B-4758-BF68-A0B18430B0AD@netapp.com>
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On 8/28/2014 4:31 AM, Eggert, Lars wrote: > Hi, > > no matter what value I bump kern.ipc.nmbclusters and kern.ipc.nmbufs to, I still get "requests for mbufs denied" with igb interfaces, and the occasional connection stall, even when dialing down hw.igb.num_queues=1: > The box in question has six igb interfaces, 2x 'I210 Gigabit Network Connection' and 4x '82580 Gigabit Network Connection' and is running: > > FreeBSD laurel.muccbc.hq.netapp.com 10.0-RELEASE-p7 FreeBSD 10.0-RELEASE-p7 #0: Tue Jul 8 06:37:44 UTC 2014 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 > > Anyone have any ideas what else to try? A stab in the dark, but I ran into a bug where setting queues to 1 did not have the same positive impact as disabling msix in loader.conf hw.igb.enable_msix=0 ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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