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Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll() |
Date: |
Thu, 28 May 2015 19:16:56 +0800 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Thu, 05/28 10:21, Paolo Bonzini wrote:
>
>
> On 28/05/2015 03:46, Fam Zheng wrote:
> > The main context uses iohandler and aio_dispatch, neither calls
> > aio_set_dispatching(). However, if we have [2], they can be changed to
> > aio_poll(), then would this idea work?
>
> I think it's a bad idea to handle aio_poll for context B in a different
> way, just because you have an outer aio_poll for context A...
But we already do something similar: ignoring slirp, main_loop_wait() is like
an iothread aio_poll() without the "outermost differentiation", while the
current aio_poll() in bdrv_drain() is roughly "main_loop_wait() minus
iohandlers".
Fam
- [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Fam Zheng, 2015/05/27
- [Qemu-devel] [RFC PATCH 1/4] aio-posix: Introduce aio_set_io_event_notifier, Fam Zheng, 2015/05/27
- [Qemu-devel] [RFC PATCH 2/4] aio-win32: Implement aio_set_io_event_notifier, Fam Zheng, 2015/05/27
- [Qemu-devel] [RFC PATCH 3/4] virtio-blk: Use aio_set_io_event_notifier in dataplane, Fam Zheng, 2015/05/27
- [Qemu-devel] [RFC PATCH 4/4] virtio-scsi-dataplane: User aio_set_io_event_notifier, Fam Zheng, 2015/05/27
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Paolo Bonzini, 2015/05/27
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Fam Zheng, 2015/05/27
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Paolo Bonzini, 2015/05/28
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(),
Fam Zheng <=
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Paolo Bonzini, 2015/05/28
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Fam Zheng, 2015/05/28
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Paolo Bonzini, 2015/05/28
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Fam Zheng, 2015/05/28
- Re: [Qemu-devel] [RFC PATCH 0/4] aio: Don't poll ioeventfd in nested aio_poll(), Paolo Bonzini, 2015/05/28