Re: [kvm-devel] QEMU/KVM: virtio-blk asynchronous IO

2008-03-29 Thread Anthony Liguori
Marcelo Tosatti wrote: > Use asynchronous IO in the virtio block QEMU driver. > > virtio_blk_handle_output should not block for long periods, since it > holds the mutex lock prohibiting other vcpu's from doing IO to QEMU > devices. Without AIO write intensive benchmarks make guests hang for > sever

Re: [kvm-devel] QEMU/KVM: virtio-blk asynchronous IO

2008-03-27 Thread Anthony Liguori
Marcelo Tosatti wrote: > Use asynchronous IO in the virtio block QEMU driver. > > virtio_blk_handle_output should not block for long periods, since it > holds the mutex lock prohibiting other vcpu's from doing IO to QEMU > devices. Without AIO write intensive benchmarks make guests hang for > sever