Hi Gianluca, Thanks for investigating it. This is definitely a bug, please file an issue in GitHub for that.
Lucia On Sat, Dec 10, 2022 at 10:30 PM Gianluca Amato <gianluca.amato...@gmail.com> wrote: > Hi Lucia, > thanks for you suggestion. I made several experiments with and without > hugepages. It seems that, when oVirt calculates the amount of available > memory on the NUMA nodes, it does not keep into consideration the reserved > hugepages. For example, this is the result of "numactl --hardware" on my > host in this moment: > > ---------------- > 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: 106431 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: 142009 MB > node distances: > node 0 1 > 0: 10 21 > 1: 21 10 > ------------------- > > I am able to launch my VM only if I set its Memory Size to be 210 GB or > less (i.e., the double of the available RAM in node 0, which is the node > with less available RAM). I tried several times with different amount of > free memory, and this behavior seems to be consistent. Note that, once > started, the VM consumes the pre-allocated reserved hugepages, and has > almost no impact on the free memory. > > Do you think there is a reason why oVirt behaves in this ways, or is this > a bug that I could signal in the github repo ? > > Thanks a lot again, > --gianluca > > _______________________________________________ > Users mailing list -- users@ovirt.org > To unsubscribe send an email to users-le...@ovirt.org > 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/users@ovirt.org/message/BG25VHK4YIHSNJFI7CV4GW7OIUSAN74V/ >
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