On Jan 19, 2018 10:52 AM, "andreil1" <andreil1@starlett.lv> wrote: Hi ! What is optimal setting for oVirt KVM guests for database hosting on Xeon server (2 x Xeon 4-core each) (in my case this is Firebird based accounting/stock control system with several clients active)? 1st of course its preallocated disk image. VirtO-SCSI enabled - It's not clear that virtio-scsi is faster than virtio-blk in all cases. Test. - What's the backend storage? Migration disabled. Balloning disabled. CPU shares disabled Pass-through host CPU enabled What about NUMA and pinning? What should be other CPU settings? For example, Xeon have 2 threads per core, should I set in oVirt 1 or 2 threads per virtual CPU? IO Threads on or off? On. Any idea of NUMA settings ? Indeed. + Huge pages, in both host and guest. Node running 4 VMs total, CPU load is quite low, RAM is enough to preallocate for each VM + 4GB for node itself. In short, use high performance VM. See ovirt.org feature page. Y. Thanks in advance ! Andrei _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users