Messages in this thread | | | Date | Mon, 28 Dec 2009 10:47:07 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: increase NR_IRQS and nr_irqs |
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* Yinghai Lu <yinghai@kernel.org> wrote:
> have a system with lots of igb and ixgbe, when iov/vf are enabled for > them, we hit the limit of 3064. > > so try to increase NR_IRQS and nr_irqs to about 8000 and 6000. > for that system.
could you please provide before/after .data size analysis, expected dynamic allocation overhead difference (if any), etc. - so that we can see whether there's any (and if yes, how much) cost due to the bumping of the limit.
Also, instead of just upping the limit to a new random limit that works on that testbox, could we put some more thought into how much we want to increase it, and stay at least 2-3 years ahead of the expected hardware curve?
Ingo
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