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

[Andrey Zonov]

Hi,

9k jumbos is ubiquitous now. I believe we use 9k jumbos for last four 
years or more.
You've got unworkable system after upgrade from 8.1 to 8.2 and 
documentation doesn't help here. It isn't a good way is made driver (or 
system) which doesn't work with jumbo by default.

My point is if you're using machine with 8 CPUs than 
maxusers/clusters/9k mbufs should have been increased by system, because 
on this machine minimum 2Gb memory is available.

-- 
Andrey Zonov


30.03.2011 1:55, 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 
> <mailto: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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