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Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll()
From: |
Dietmar Maurer |
Subject: |
Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll() |
Date: |
Wed, 23 Jan 2013 08:58:10 +0000 |
> > > > Are you using timers in any way?
> > >
> > > Yes, I call co_sleep_ns(rt_clock, delay) to limit rate to output
> > > stream.
> >
> > Use block_job_sleep_ns instead, and only call it when no I/O is pending.
>
> Thanks, that works!
I currently use qemu_aio_set_fd_handler() to implement async output to
the backup stream. While that works, performance is much better (during backup)
if I use a separate thread to write the data.
Is that known behavior, or should aio give about the same performance as
using a thread?
Or would I get better performance if I use Linux native AIO support?
- [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Kevin Wolf, 2013/01/16
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Paolo Bonzini, 2013/01/16
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/22
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Paolo Bonzini, 2013/01/22
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/22
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Paolo Bonzini, 2013/01/22
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/22
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(),
Dietmar Maurer <=
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Paolo Bonzini, 2013/01/23
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/23
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Paolo Bonzini, 2013/01/23
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/23
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/24
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Paolo Bonzini, 2013/01/24
- Re: [Qemu-devel] [PATCH] aio-posix: Fix return value of aio_poll(), Dietmar Maurer, 2013/01/24