Are you using virtio-scsi in oVirt?
For my latest test, I installed CentOS7 on my server and then installed the libvirt/KVM virtualization group. I created a Win7 guest VM giving it 2GB RAM, 1 vCPU, and 60GB HDD. I did not specify anything for the HDD type; just whatever the default is for libvirt.
The install of Win7 went *way* faster than any bare metal install I have ever done of Win7, and also faster than the ESXi install I had done earlier.
Once installed, I downloaded the same "Parkdale" HDD testing application I have been using, and used the same settings. The write test results were about 100 MByte/s. I ran the test several times, including rebooting between tests, and the results came back consistent.
As a baseline, I ran the following modified 'dd' write test on the server itself:
dd bs=1M count=4000 if=/dev/zero of=test conv=sync
with the following results:
4000+0 records in
4000+0 records out
4194304000 bytes (4.2 GB) copied, 39.349 s, 107 MB/s
So now the question becomes, why would I be getting such a huge difference in oVirt?
Thanks.
-Alan
_______________________________________________
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users