Here it is: http://pastebin.com/raw/KNQPFqVn
Cheers,
Jan
Am 2017-01-27 20:20, schrieb sL1pKn07 SpinFlo:
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 [1]
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?
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Links:
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[1] http://pastebin.com/raw/J6trq7gJ
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