[pve-devel] pve-kernel package : add irqbalance as recommended ? (like debian linux-image package)
Martin Waschbüsch
service at waschbuesch.it
Sat Feb 20 12:40:49 CET 2016
> Am 20.02.2016 um 08:25 schrieb Alexandre DERUMIER <aderumier at odiso.com>:
>
>>> Some articles, for instance https://www.kernel.org/doc/ols/2009/ols2009-pages-169-184.pdf,
>>> explicitly recommend disabling irqbalance when 10GbE is involved.
>>>
>>> Do you know if this is still true today? After all, the paper is from 2009.
>
> Well, the article is about to disabling irqbalance AND manually binding cpus on network interfaces.
>
> Manual binding is better because you can fine tuning.
>
> But using irqbalance vs do nothing, irqbalance wins.
>
> I have seen a lot of system, using only cpu0 for network interrupts for example.
Ah, I see. In that case it would make sense indeed.
The cards I use (both nic and sas/raid) employ one interrupt queue per core, so there never was anything for me to tune.
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