Strahil Nikolov

On Fri, Sep 10, 2021 at 18:19, Guillaume Pavese
<guillaume.pavese@interactiv-group.com> wrote:

It's my understanding that libgfapi is currently unsupported in oVirt because there were a few long standing bugs.
Unfortunately, the performance improvements that users have reported on this mailing list haven't been seen or replicated by Red Hat, so recently most of these bugzilla tickets have been closed as WONTFIX

https://bugzilla.redhat.com/show_bug.cgi?id=1633642
https://bugzilla.redhat.com/show_bug.cgi?id=1465810
https://bugzilla.redhat.com/show_bug.cgi?id=1552344

This is a shame as I think the performance improvements from libgfapi as reported in user benchmarks were impressive, and the underlying qemu/libvirt bugs are now fixed or were close to be.

Guillaume Pavese

Ingénieur Système et Réseau
Interactiv-Group

On Thu, Sep 9, 2021 at 7:00 PM Strahil Nikolov via Users <users@ovirt.org> wrote:
Dis you enable libgfapi ?
engine-config -s LibgfApiSupported=true

Note: power off and then power on the VM. The qemu process should not use the '/rhev' mountpoints.

Also, share your current setup:
- disks
- hw controller
- did you storage align your block devices (hw raid only)
- tuned-profile
- sysctl settings that are changed
- gluster volume options that are changed

Best Regards,
Strahil Nikolov
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