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Date: Fri, 07 Aug 2009 21:03:56 -0400
From: Andrew Gallatin <gallatin@...i.com>
To: Bill Fink <billfink@...dspring.com>
CC: Brice Goglin <Brice.Goglin@...ia.fr>,
Linux Network Developers <netdev@...r.kernel.org>,
Yinghai Lu <yhlu.kernel@...il.com>
Subject: Re: Receive side performance issue with multi-10-GigE and NUMA
Bill Fink wrote:
> All sysfs local_cpus values are the same (00000000,000000ff),
> so yes they are also wrong.
How were you handling IRQ binding? If local_cpus is wrong,
the irqbalance will not be able to make good decisions about
where to bind the NICs' IRQs. Did you try manually binding
each NICs's interrupt to a separate CPU on the correct node?
Regards,
Drew
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