On Friday, January 3, 2020 1:51:00 PM MST Robbie Harwood wrote:
Robbie Harwood <rharwood(a)redhat.com> writes:
> Ben Cotton <bcotton(a)redhat.com> writes:
>>
https://fedoraproject.org/wiki/Changes/EnableEarlyoom
>>
>> == Summary ==
>> Install earlyoom package, and enable it by default. This will cause
>> the kernel oomkiller to trigger sooner, but will not affect which
>> process it chooses to kill off. The idea is to recover from out of
>> memory situations sooner, rather than the typical complete system hang
>> in which the user has no other choice but to force power off.
>>
>> # enable earlyoom by default on workstation
>> enable earlyoom.service
>> </pre>
>
> The OOM killer is a kernel function. I have no opinion on this proposal
> as it stands, but I would like it to include an explanation of why this
> requires a service in userspace to fix.
Another thought. Wouldn't some of the pain here be alleviated by
setting vm.swappiness=0? Currently it seems to be 60, which results in
somewhat aggressive swap use; 1 seems better (minimal swapping without
disabling), while 0 will disable it for general use (while preserving it
for hibernation). This would at least improve the disk thrashing during
OOM situations.
Thanks,
--Robbie
To clarify, according to the Workstation group, hibernation isn't even
supported.
Regardless, if this Change is accepted, it should probably be done on a per-
spin basis. If the GNOME Spin wants this, that's one thing, but I don't
believe this would be a good idea on servers.
--
John M. Harris, Jr.
Splentity