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Date: Wed, 02 Jul 2014 18:23:37 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [regression] dataplane: throughout -40% by commit
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To: Ming Lei <tom.leiming@gmail.com>, Stefan Hajnoczi <stefanha@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Stefan Hajnoczi <stefanha@gmail.com>, Fam Zheng <famz@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, "Michael S. Tsirkin" <mst@redhat.com>

Il 02/07/2014 18:13, Ming Lei ha scritto:
> That must be for generating guest irq, which should have been
> processed as batch easily.

No, guest irqs are generated (with notify_guest) on every I/O completion 
even in 2.0.

Paolo