@Joseph: I did test 4.15.2, but some things are failing, in particular
docker because of lacking AUFS support, so I need to build a kernel
myself I guess, which will take a bit.
Also note that I'm seeing this on Xenial machines, didn't test with
Artful. We used to run them with the 4.10 HWE kernels because they offer
improved performance in some areas compared to the stock 4.4. kernel.
Started seeing these issue after HWE switched to 4.13 a couple of weeks
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Servers going OOM after updating kernel from 4.10 to 4.13
Status in linux package in Ubuntu:
Status in linux source package in Artful:
We are seeing this on multiple servers after upgrading from previous
4.10 series HWE kernels to the new 4.13 HWE series. With the new
kernel, free memory is continously decreasing at a high rate and the
servers start swapping and finally OOMing services within days. With
the 4.10 kernel, decrease of free memory is slower and stabilizes
after a while.
Latest kernel tested is linux-image-4.13.0-32-generic but the issue
also affects older kernels from that series, tested back to linux-
image-4.13.0-19-generic. No issue with linux-image-4.10.0-42-generic.
The servers are running as OpenStack controller nodes using either
Ocata or Pike UCA plus ceph. See attached graph for the memory
DistroRelease: Ubuntu 16.04
Package: linux-image-4.13.0-32-generic 4.13.0-32.35~16.04.1
ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
Date: Fri Feb 9 09:45:50 2018
PATH=(custom, no user)
UpgradeStatus: No upgrade log present (probably fresh install)
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