On Thu, Jun 23, 2022 at 12:29:11PM -0700, Brian Buhrow wrote:
> Hello. I'm running a number of NetBSD-9 and -current as of 99.77
> amd/64 domu machines on
> a couple of different servers with FreeBSD as dom0. I'm getting the
> following messages from
> the kernel:
> xennet0: rx no cluster
> Much of the time, these messages seem harmless, but occasionally, the network
> locks up on
> machines that display this message.
>
> In looking at the source code, I get that this is a pool allocation failure in
> if_xennet_xenbus.c, but I don't understand which memory resource it's running
> out of and if
> there is a way to increase that resource. In general, the domu's in question
> seem to have
> plenty of memory and I don't see a lot of memoory pressure for other tasks on
> the systems.
>
> Has anyone else seen these messages on their domu machines and does
> anyone have ideas on
> how to correct the issue?
It's running out of mbuf clusters; this is the mclpl in vmstat -m
You can try increasing kern.mbuf.nmbclusters, or if that fail, rebuilding
a kernel with
options NMBCLUSTERS=xxxx
e.g.
options NMBCLUSTERS=65536
--
Manuel Bouyer <bou...@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
