685b0985f0
In some instances, particularly with swap on zram, swap used will be high while there is still a lot of memory available. FB OOMD handles this by thresholding kills to X% of total swap usage. Let's do the same thing here. Anecdotally with these thresholds and my laptop which is exclusively swap on zram I can sit at 0K / 4G swap free with most of memory free and systemd-oomd doesn't kill anything. Partially addresses aggressive kill behavior from https://bugzilla.redhat.com/show_bug.cgi?id=1941170
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