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+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
+# Calculate the base trigger point for the load average alarms.
+# This is the maximum number of CPU's in the system over the past 1
+# minute, with a special case for a single CPU of setting the trigger at 2.
+ alarm: load_cpu_number
+ on: system.load
+ class: Utilization
+ type: System
+component: Load
+ os: linux
+ hosts: *
+ calc: ($active_processors == nan or $active_processors == inf or $active_processors < 2) ? ( 2 ) : ( $active_processors )
+ units: cpus
+ every: 1m
+ info: number of active CPU cores in the system
+
+# Send alarms if the load average is unusually high.
+# These intentionally _do not_ calculate the average over the sampled
+# time period because the values being checked already are averages.
+
+ alarm: load_average_15
+ on: system.load
+ class: Utilization
+ type: System
+component: Load
+ os: linux
+ hosts: *
+ lookup: max -1m unaligned of load15
+ units: load
+ every: 1m
+ warn: ($this * 100 / $load_cpu_number) > (($status >= $WARNING) ? 175 : 200)
+ delay: down 15m multiplier 1.5 max 1h
+ info: system fifteen-minute load average
+ to: sysadmin
+
+ alarm: load_average_5
+ on: system.load
+ class: Utilization
+ type: System
+component: Load
+ os: linux
+ hosts: *
+ lookup: max -1m unaligned of load5
+ units: load
+ every: 1m
+ warn: ($this * 100 / $load_cpu_number) > (($status >= $WARNING) ? 350 : 400)
+ delay: down 15m multiplier 1.5 max 1h
+ info: system five-minute load average
+ to: sysadmin
+
+ alarm: load_average_1
+ on: system.load
+ class: Utilization
+ type: System
+component: Load
+ os: linux
+ hosts: *
+ lookup: max -1m unaligned of load1
+ units: load
+ every: 1m
+ warn: ($this * 100 / $load_cpu_number) > (($status >= $WARNING) ? 700 : 800)
+ delay: down 15m multiplier 1.5 max 1h
+ info: system one-minute load average
+ to: sysadmin