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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: 10min_netdev_backlog_exceeded
on: system.softnet_stat
os: linux
hosts: *
lookup: sum -10m unaligned absolute of dropped
units: packets
every: 1m
warn: $this > 0
delay: down 1h multiplier 1.5 max 2h
info: number of packets dropped in the last 10min, because sysctl net.core.netdev_max_backlog was exceeded (this can be a cause for dropped packets)
to: sysadmin
alarm: 10min_netdev_budget_ran_outs
on: system.softnet_stat
os: linux
hosts: *
lookup: sum -10m unaligned absolute of squeezed
units: events
every: 1m
warn: $this > (($status >= $WARNING) ? (0) : (10))
delay: down 1h multiplier 1.5 max 2h
info: number of times, during the last 10min, ksoftirq ran out of sysctl net.core.netdev_budget or net.core.netdev_budget_usecs, with work remaining (this can be a cause for dropped packets)
to: silent
alarm: 10min_netisr_backlog_exceeded
on: system.softnet_stat
os: freebsd
hosts: *
lookup: sum -10m unaligned absolute of qdrops
units: packets
every: 1m
warn: $this > 0
delay: down 1h multiplier 1.5 max 2h
info: number of drops in the last 10min, because sysctl net.route.netisr_maxqlen was exceeded (this can be a cause for dropped packets)
to: sysadmin
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