Re: [Qemu-devel] Poor 8K random IO performance inside the guest

2017-07-17 Thread Stefan Hajnoczi
On Fri, Jul 14, 2017 at 04:28:12AM +, Nagarajan, Padhu (HPE Storage) wrote: > During an 8K random-read fio benchmark, we observed poor performance inside > the guest in comparison to the performance seen on the host block device. The > table below shows the IOPS on the host and inside the gue

Re: [Qemu-devel] Poor 8K random IO performance inside the guest

2017-07-13 Thread Fam Zheng
On Fri, 07/14 04:28, Nagarajan, Padhu (HPE Storage) wrote: > During an 8K random-read fio benchmark, we observed poor performance inside > the guest in comparison to the performance seen on the host block device. The > table below shows the IOPS on the host and inside the guest with both > virtiosc

[Qemu-devel] Poor 8K random IO performance inside the guest

2017-07-13 Thread Nagarajan, Padhu (HPE Storage)
During an 8K random-read fio benchmark, we observed poor performance inside the guest in comparison to the performance seen on the host block device. The table below shows the IOPS on the host and inside the guest with both virtioscsi (scsimq) and virtioblk (blkmq).