Date: Wed, 30 Mar 2011 10:33:05 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: Andrey Zonov <andrey@zonov.org> Cc: freebsd-net@freebsd.org, Jack Vogel <jfvogel@gmail.com> Subject: Re: igb(4) won't start with "igb0: Could not setup receive structures" Message-ID: <AANLkTinW2RuGKxo-RSckrtJWr%2BVAVzKQsMbmyeJLRmG_@mail.gmail.com> In-Reply-To: <4D92C673.2080107@zonov.org> References: <4D923931.2070606@zonov.org> <AANLkTinZ=Js_pqwtAWX8yqPw==3Fm-7FA50MHDuz0Y86@mail.gmail.com> <4D92C673.2080107@zonov.org>
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Hi, On Wed, Mar 30, 2011 at 1:58 AM, Andrey Zonov <andrey@zonov.org> wrote: > 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. > I am doubtful that the number of CPU[0] or number of users (yes, I know `maxusers' is currently used to compute the default `nmbcluster'...) can be linked to any network load pattern at all. You can have a 24 CPU machine made for 4096 users with a single NIC, not requiring much memory, while a 1 CPU machine with only 1 users can have +8 NIC and require a huge quantity of memory. Available KVM space should also be taken into account, as it is rather limited on i386. - Arnaud [0]: even more today where you can have a huge number of virtual CPU.
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