Re: [PATCH 1/2] kvm tools: Increase AIO_MAX to 256

2012-06-05 Thread Pekka Enberg
On Mon, 4 Jun 2012, Asias He wrote: The queue size for virtio_blk is 256 and AIO_MAX is 32, we might be short of available aio events if guest issues 32 requests simultaneously. Following error is observed when guest running stressed I/O workload. Info: disk_image__read error: total=-11

Re: [PATCH 1/2] kvm tools: Increase AIO_MAX to 256

2012-06-05 Thread Asias He
On Tue, Jun 5, 2012 at 3:59 PM, Pekka Enberg penb...@kernel.org wrote: On Mon, 4 Jun 2012, Asias He wrote: The queue size for virtio_blk is 256 and AIO_MAX is 32, we might be short of available aio events if guest issues 32 requests simultaneously. Following error is observed when guest

[PATCH 1/2] kvm tools: Increase AIO_MAX to 256

2012-06-04 Thread Asias He
The queue size for virtio_blk is 256 and AIO_MAX is 32, we might be short of available aio events if guest issues 32 requests simultaneously. Following error is observed when guest running stressed I/O workload. Info: disk_image__read error: total=-11 To fix this, let's increase the aio