feat: break out cache/buffers and ZFS ARC from used memory#1489
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ChanningHe wants to merge 1 commit into
Open
feat: break out cache/buffers and ZFS ARC from used memory#1489ChanningHe wants to merge 1 commit into
ChanningHe wants to merge 1 commit into
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On hosts with a big page cache or ZFS ARC, used memory looks almost full and the memory alerts keep firing, even though that memory is reclaimable. ZFS is the worst case since
MemAvailabledoesn't count the ARC. There are also a few open issues about this.Periphery now reports memory broken out into used, cache/buffers, ZFS ARC and swap, and keeps reclaimable memory out of "used" so the alerts track real pressure.
Notes for review:
bin/periphery/src/stats.rswas moved tostats/mod.rsto make room for the newstats/mem.rs(the /proc parsing and calculation).historical.tsxhas the largest diff — the memory chart went from a single line to a stacked composition.Screenshot:
