** Also affects: qemu (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1808412
Title:
4.15.0 memory allocation issue
Status in linux
I see the same behavior on both Bionic and Xenial on the 4.15.0-43
kernel.
4.4.0-141 doesn't have the same issue but is still reacting weirdly.
with both libvirt and qemu from ubuntu updates and Ubuntu cloud archive.
the problem is more obvious when starting the vm on a server with
multiple
apport information
** Tags added: apport-collected xenial
** Description changed:
My server is :
PowerEdge T630
2x Intel(R) Xeon(R) CPU E5-2623 v4 @ 2.60GHz
128G of ram
4x VGA compatible controller [0300]: NVIDIA Corporation GP102 [TITAN X]
[10de:1b00] (rev a1)
Starting 116G
When the memory allocation was stalled, here is what perf top was giving me:
Samples: 483K of event 'cycles:ppp', Event count (approx.): 52114089074
Overhead Shared Object Symbol
28.53% [kernel] [k] total_mapcount
25.34% [kernel]
u cannot run the apport-collect script, but if there is something that
is really needed, please ask me and i will do my best give the
information.
thanks
** Changed in: linux (Ubuntu)
Status: Incomplete => Opinion
** Changed in: linux (Ubuntu)
Status: Opinion => Confirmed
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You
4.18.0 is also affected.
Installed the pkg on xenial, and the same issue was present, i didn't tested
disabling the transparent_hugepage tho.
(wget http://security.ubuntu.com/ubuntu/pool/main/l/linux-signed/linux-
image-4.18.0-12-generic_4.18.0-12.13_amd64.deb
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