igb(4) won't start with "igb0: Could not setup receive structures"

[Jack Vogel]

Our validation group has a default postinstall process, every installed
system gets those changes,
and these mbuf pool sizes are in that set of changes. While I'm not opposed
to system default settings
changing its usually necessary to have local sys changes anyway, after all
you don't get 9K jumbos
without manually specifying them as well :)

Regards,

Jack


On Tue, Mar 29, 2011 at 12:55 PM, Andrey Zonov <andrey at zonov.org> wrote:

> Hi,
>
> New igb driver (and I think em too) is required too much 9k mbufs when it's
> been configured with mtu = 9000. On machine with 8 CPUs, driver is required
> 8192 9k mbufs, but by default there is only 6400 and network won't start. In
> previous versions for big mtu it was used 4k mbufs, by default there is
> 12800 and all worked fine.
>
> Maybe it's time to think about increasing default
> kern.maxusers/kern.ipc.nmbclusters? or use mp_ncpus for calculation these
> values? or just increase amount of
> mbuf_cluster/mbuf_jumbo_page/mbuf_jumbo_9k from that driver...
>
> I just want igb to work out-of-the-box.
>
> --
> Andrey Zonov
>
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