On Tue, 22 Nov 2022 17:57:37 +1100 Ivan Volosyuk <ivan.volos...@gmail.com> wrote:
> Is there something special about the pinning step? When I start a new > VM with 16G in dedicated hugepages my system becomes quite > unresponsive for several seconds, significant packet loss and random > hang device oopses if I use preemptive kernel? Pinning in blocking in the ioctl, but this should only affect the QEMU process, not other host tasks, there are various schedule calls to prevent this. A 16GB, hugepage VM certainly shouldn't cause such problems. Are you sure the VM is really using pre-allocated hugepages? This sounds more like a host system that's being forced to swap to accommodate the VM page pinning. Thanks, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://listman.redhat.com/mailman/listinfo/vfio-users
