On Sun, 2012-12-16 at 11:24 -0200, Henrique de Moraes Holschuh wrote:
> Package: linux
> Version: 3.2.35-1
> Severity: important
> Tags: patch
> 
> Please include the attached patch in Wheezy, without it, irqbalance fails to
> do its job properly on any server (actually any multi-core system with
> MSI/MSI-X irqs).
>
> It is important to have irqbalance work properly out-of-the-box, since it is
> the only trivial way to get better network/storage behaviour out of the
> MSI-X capable NUMA systems that are >95% of the post-2010 server market.

Would be nice, but it has been broken for so long that 'everyone knows'
to disable irqbalance.

> I've tested the attached patch on stock (kernel.org) 3.2.34 on production,
> and it works fine.  The patch is very simple, it just publishes the MSI
> IRQ vector information to sysfs, which irqbalance uses.

Changes ABI, so will have to wait if we apply it at all.

> git commit upstream: b50cac55bf859d5b2fdcc1803a553a251b703456
> 
> Alternatively, we might want to add it to -stable series upstream, on the
> grounds that it is widely desired functionality (i.e. useful for all
> distros).

This doesn't suddenly become urgent because you just noticed it.

Ben.

-- 
Ben Hutchings
Always try to do things in chronological order;
it's less confusing that way.

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