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Please pay attention to random failures.
https://mstdn.maud.io/@omasanori#openbsd received a commit from deraadt@ that drastically reduce hibernation time
increase hibernate writeout speed a little. modern machines have vast
tracts of unused memory, and the empty-space RLE scanner (uvm_page_rle)
would rescan for empty space needlessly wasting excessive cpu time
16G machine, 100sec -> 9sec
40G machine, 325sec -> 28sec
with kettenis mlarkin