linux-kernel - Re: [net-next RFC V5 3/5] virtio: intorduce an API to set affinity for a virtqueue

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Message-ID: <5023D3DA.8020902@redhat.com>
Date:	Thu, 09 Aug 2012 17:14:34 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	unlisted-recipients:; (no To-header on input)
CC:	"Michael S. Tsirkin" <mst@...hat.com>, krkumar2@...ibm.com,
	habanero@...ux.vnet.ibm.com, kvm@...r.kernel.org,
	netdev@...r.kernel.org, mashirle@...ibm.com,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, edumazet@...gle.com,
	tahm@...ux.vnet.ibm.com, jwhan@...ewood.snu.ac.kr,
	davem@...emloft.net, sri@...ibm.com
Subject: Re: [net-next RFC V5 3/5] virtio: intorduce an API to set affinity
 for a virtqueue

Il 30/07/2012 08:27, Paolo Bonzini ha scritto:
>>>> >> > Did you set the affinity manually in your experiments, or perhaps there
>>>> >> > is a difference between scsi and networking... (interrupt mitigation?)
>> > 
>> > You need to run irqbalancer in guest to make it actually work. Do you?
> Yes, of course, now on to debugging that one.  I just wanted to ask
> before the weekend if I was missing something as obvious as that.

It was indeed an irqbalance bug, it is fixed now upstream.

Paolo

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