Re: earlyoom by default

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On 1/8/20 5:21 PM, Chris Murphy wrote:
> On Mon, Jan 6, 2020 at 7:56 PM Dusty Mabe <dusty@xxxxxxxxxxxxx> wrote:
>> For cloud at least it's very common to not have swap. I'd argue for servers
>> you don't want them swapping either but resources aren't quite as elastic as
>> in the cloud so you might not be able to burst resources like you can in the cloud.
> There's also discussion about making oomd a universal solution for
> this; but I came across this issue asserting PSI (kernel pressure
> stall information) does not work well without swap.
> Ignoring whether+what+when a workaround may be found for that, what do
> you think about always having swap-on-ZRAM enabled in these same
> environments? The idea there is a configurable size /dev/zram block
> device (basically a compressible RAM disk) on which swap is created.
> Based on discussions with anaconda, IoT, Workstation, and systemd
> folks - I think there's a potential to converge on systemd-zram
> generator (rust) to do this.
> Workstation wg is mulling over the idea of dropping separate swap
> partitions entirely, and using a swap-on-ZRAM device instead; possibly
> with a dynamically created swapfile for certain use cases like
> hibernation. So I'm curious if this might have broader appeal, and get
> systemd-zram generator production ready.

Seems like an interesting concept. Since it doesn't require any disk setup
it's easy to turn it off or configure it I assume.


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