Re:L Bug#851119: 4.8.11 bpo8: "list_del corruption" and "CPU#x got stuck for 22s"
> I have the impression that there is an increased probability
> for linux-image-4.8.0-0.bpo.2-amd64-unsigned (4.8.11-1~bpo8+1)
> to run into "CPU#x got stuck for 22s" messages.
This appears to be due to the cgroups memory controller. I've had had good
experience with adding cgroup_disable=memory on the kernel boot line.
You can also compile your own kernel without the the memory controller,
which I recommend if you have the capability, as it cuts out a non-trivial
amount of kernel code.
Removning cgroups *entirely* may cause systemd to fall over, but AFAIK you
only need CONFIG_CGROUPS itself and not all the secondary drivers. Or just
uninstall systemd and install sysvinit-core again.
[If recompiling, you might want to disable disk quota and EXT4 encryption if
you don't use them, and reduce the number of supported CPUs to the number
you have, including hyperthreads. This reduces ext4 inode size down below
1024 bytes, so it can fit 4 into a 4KB slab again, which is a regression
since jessie.]
--
Laurence "GreenReaper" Parry - Inkbunny administrator
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