template: memcached_last_collected_secs
on: memcached.cache
calc: $now - $last_collected_t
- every: 10s
- warn: $this > ( 5 * $update_every)
- crit: $this > (60 * $update_every)
units: seconds ago
+ every: 10s
+ warn: $this > (($status >= $WARNING) ? ($update_every) : ( 5 * $update_every))
+ crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
+ delay: down 5m multiplier 1.5 max 1h
info: number of seconds since the last successful data collection
to: dba
template: memcached_cache_memory_usage
on: memcached.cache
calc: $used * 100 / ($used + $available)
- every: 10s
- warn: $this > 80
- crit: $this > 90
units: %
+ every: 10s
+ warn: $this > (($status >= $WARNING) ? (70) : (80))
+ crit: $this > (($status == $CRITICAL) ? (80) : (90))
+ delay: up 0 down 15m multiplier 1.5 max 1h
info: current cache memory usage
to: dba
# find the rate memcached cache is filling
-template: memcached_cache_fill_rate
+template: cache_fill_rate
on: memcached.cache
- lookup: min -5m at -30m unaligned of available
- calc: ($this - $available) / (($now - $after) / 60)
+ lookup: min -10m at -50m unaligned of available
+ calc: ($this - $available) / (($now - $after) / 3600)
+ units: KB/hour
every: 1m
- units: KB/min
- info: average rate the cache fills up (positive), or frees up (negative) space, for the last 30 minutes
+ info: average rate the cache fills up (positive), or frees up (negative) space, for the last hour
# find the hours remaining until memcached cache is full
-template: memcached_out_of_cache_space
+template: out_of_cache_space_time
on: memcached.cache
- calc: $available / ($memcached_cache_fill_rate * 60)
- every: 10s
- warn: $this > 0 and $this < 48
- crit: $this > 0 and $this < 24
+ calc: ($cache_fill_rate > 0) ? ($available / $cache_fill_rate) : (inf)
units: hours
- info: estimated time the cache will run out of space, if the system continues to add data with the rate of the last 30 minutes
+ every: 10s
+ warn: $this > 0 and $this < (($status >= $WARNING) ? (48) : (8))
+ crit: $this > 0 and $this < (($status == $CRITICAL) ? (24) : (2))
+ delay: down 15m multiplier 1.5 max 1h
+ info: estimated time the cache will run out of space, if the system continues to add data with the rate of the last hour
to: dba