Can you share the New vcpu config? Im intereses because have, more or less, the same configuration (2x xeon x5650)
Greetings El 27 ene. 2017 6:04 p. m., "Jan Wiele" <j...@wiele.org> escribió: > Am Freitag, 27. Januar 2017, 08:52:50 CET schrieb Alex Williamson: > > On Fri, 27 Jan 2017 11:58:05 +0100 > > > > Jan Wiele <j...@wiele.org> wrote: > > > Hi, > > > I've two E5-2670 CPUs and want to pin a VM to a node. CPU pinning works > > > fine, however memory allocation seems to happen randomly. Sometimes it > is > > > done on node 0, sometimes on node 1. > > > > > > My VM config: http://pastebin.com/raw/J6trq7gJ > > > I'm on Arch Linux Kernel 4.8.13-1 with libvirt 2.4.0-2 > > > > > > Any ideas? > > > > Looks like it should work to me. I've certainly tested this sort of > > setup on RHEL and Fedora in the past and it did the right thing. > > > Your > > vcpupin actually looks a little off though, just like on the host, the > > VM is going to enumerate cores then threads, this is why your numactl > > info shows node0 w/ {0-7,16-23}, node1 w/ {8-15,24-31}, ie. > > {cores,threads}. By interleaving the node1 pinning as you've done, the > > mapping is off in the VM. For instance, the guest will think CPU0 and > > CPU6 are threads on the same core, but they're mapped to CPU8 and CPU11 > > on the host, which are unrelated. > Thanks! I will fix that. (I think I did this because of a user, who > reported > slightly better performance, in the old archlinux-vfio-thread) > > > I know that doesn't help your > > numatune issue though. > > Do you know which part of the system will actually allocate the memory on > the > specified node? Should I see some information about this in the qemu > command > line parameters? > > _______________________________________________ > vfio-users mailing list > vfio-users@redhat.com > https://www.redhat.com/mailman/listinfo/vfio-users >
_______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
