> On Thu, Jul 3, 2014 at 12:23 AM, Paolo Bonzini <pbonz...@redhat.com> wrote: > > 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. > > In 2.0, only notify_guest() is called after event batch is completed,
Ah, you're right. > I wrote one patch days ago for fixing the problem, and today > it is just verified that writes can be decreased to 10K from 120K. Great. Can you test/review my aio_notify patch and submit both then? Bonus points, but not a requirement IMO, if it also helps non-dataplane. This would only leave rt_sigprocmask. > BTW, what do you think about the patch v4 for submitting I/O as batch? I was waiting for Kevin to review it. Paolo
