Thema: sar
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Historical performance data with sysstat: enabling collection and reading past days with sar -f
sysstat's sadc collector, run periodically by sa1/sa2 or a systemd timer, writes a day's counters to the standard system activity daily data file; sar -f replays a chosen day's file for any past interval instead of only the live counters.
Maschinenlesbar: JSON