Re: [Qemu-devel] [PATCH 0/3] Refactor AIO to allow multiple AIO implementations

[Jamie Lokier]

Ryan Harper wrote:
> Addtional work has been done on top of QEMU for KVM and virtio-blk
> devices.  While virtio-blk is not yet upstream in QEMU, the AIO
> changes here provide a tremendous performance improvement (from 7.6%
> of native, to 100% of randwrite, and 3.9% of native, to 101.4% of
> native for seq write) for virtio devices with cache=off.

Is the improvement due to using linux-aio instead of (Glibc's) posix-aio?

Thanks,
-- Jamie