Re: Fedora 32 System-Wide Change proposal (late): Enable EarlyOOM

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On Fri, Jan 3, 2020 at 3:41 PM drago01 <drago01@xxxxxxxxx> wrote:
>
>
>
> On Friday, January 3, 2020, Neal Gompa <ngompa13@xxxxxxxxx> wrote:
>>
>> On Fri, Jan 3, 2020 at 2:19 PM Ben Cotton <bcotton@xxxxxxxxxx> wrote:
>> >
>> > 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.
>> >
>>
>> I'd like to see this enabled on all Fedora variants by default. This
>> seems to be generally useful for workstations and servers.
>
>
> The idea might be the implementation is not.
> Using a percentage to decide "almost out of memory" is going to hurt on systems with large amounts of memory be it a 32gb desktop or a 2tb server. You'd have plenty of memory left and it starts killing processes ...

I agree this is the most significant liability of the proposal right
now. I mention it in:
https://pagure.io/fedora-workstation/issue/119#comment-618480

And I will add this caveat to the proposal, because at the moment I
think we need a satisfactory work around in order to proceed with
enabling this feature.


-- 
Chris Murphy
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