Hi, When scheduling the dedicated CPUs with NUMA, we calculate the available memory on the NUMA nodes. Maybe the hugepages are the problem here. Could you please try your setup without them?
Thanks, Lucia On Thu, Dec 8, 2022 at 4:30 PM Gianluca Amato <[email protected]> wrote: > Hello, > as stated in the subject, I am trying to combine the "dedicated" CPU > Pinning Policy with vNUMA. My host has 2 sockets, 28 cores per socket and 2 > threads per core. In each socket I allocated 128 hugepages of 1GB each. > This is the output of "numactl --hardware": > > ------------ > available: 2 nodes (0-1) > node 0 cpus: 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 > 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 > 94 96 98 100 102 104 106 108 110 > node 0 size: 257333 MB > node 0 free: 122518 MB > node 1 cpus: 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 > 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 > 95 97 99 101 103 105 107 109 111 > node 1 size: 257993 MB > node 1 free: 124972 MB > node distances: > node 0 1 > 0: 10 21 > 1: 21 10 > ----------- > > I would like to dedicate one half of all the cores to a single guest. I > created a VM with 2 sockets, 14 cores per socket and 2 threads per core, > using the "dedicated" CPU Pinning Policy. If a set "NUMA Node Count" to > zero, the VM starts and works flawlessy. However, all virtual cores are > allocated in the first physical socket. If I set "NUMA Node Count" to 2 > (without pinning vNUMA nodes to host NUMA nodes) I cannot start the VM > since I get the error message: "The host xyz did not satisfy internal > filter CpuPinning because it doesn't have enough CPUs for the dedicated CPU > policy that the VM is set with.. ". Same thing happens if I set "NUMA > Node Count" to 1. > > Am I doing something wrong ? > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/[email protected]/message/IYZIABGATW56SFSHNI26MT4FLNBUXQHG/ >
_______________________________________________ Users mailing list -- [email protected] To unsubscribe send an email to [email protected] Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/[email protected]/message/2DBIVTC2AFYIGEH62JIC44RTIX5GOH5D/
