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+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
+# check for common /proc/net/softnet_stat errors
+
+ alarm: 1min_netdev_backlog_exceeded
+ on: system.softnet_stat
+ class: Errors
+ type: System
+component: Network
+ os: linux
+ hosts: *
+ lookup: average -1m unaligned absolute of dropped
+ units: packets
+ every: 10s
+ warn: $this > (($status >= $WARNING) ? (0) : (10))
+ delay: down 1h multiplier 1.5 max 2h
+ info: average number of dropped packets in the last minute \
+ due to exceeded net.core.netdev_max_backlog
+ to: sysadmin
+
+ alarm: 1min_netdev_budget_ran_outs
+ on: system.softnet_stat
+ class: Errors
+ type: System
+component: Network
+ os: linux
+ hosts: *
+ lookup: average -1m unaligned absolute of squeezed
+ units: events
+ every: 10s
+ warn: $this > (($status >= $WARNING) ? (0) : (10))
+ delay: down 1h multiplier 1.5 max 2h
+ info: average number of times ksoftirq ran out of sysctl net.core.netdev_budget or \
+ net.core.netdev_budget_usecs with work remaining over the last minute \
+ (this can be a cause for dropped packets)
+ to: silent
+
+ alarm: 10min_netisr_backlog_exceeded
+ on: system.softnet_stat
+ class: Errors
+ type: System
+component: Network
+ os: freebsd
+ hosts: *
+ lookup: average -1m unaligned absolute of qdrops
+ units: packets
+ every: 10s
+ warn: $this > (($status >= $WARNING) ? (0) : (10))
+ delay: down 1h multiplier 1.5 max 2h
+ info: average number of drops in the last minute \
+ due to exceeded sysctl net.route.netisr_maxqlen \
+ (this can be a cause for dropped packets)
+ to: sysadmin