CLI Commands : stats : stats alarms

stats alarms
Enable or disable the specified alarm with stats alarm <alarm_ID> enable; the no variant disables the specified alarm. Set a threshold value for each alarm using the stats alarm <alarm_ID> rising or stats alarm <alarm_ID> falling commands; the alarm is triggered when the specified threshold is reached. Alarms that can be enabled or disabled are described in Table 6, below.
stats alarm rate-limit count
Specify three time limits for tracking and, potentially, limiting how many of this type of alarm to send. The duration and count of each bucket for short, medium, and long are meant to be ordered such that the short bucket has the smallest time duration (window) and smallest maximum allowed count. The rate-limit applies to all three buckets simultaneously. Separate counts of alarms are kept for error alarm events and clear alarm events. For each alarm type, a single skip count is kept and is reported when the alarm event is later sent. When an alarm event count is exceeded for any bucket, only the skipped count is incremented (not any of the alarm event counts). For example, if the short bucket allows 5 alarm events per 5 minutes, the sixth alarm and above that occur during the 5 minute window only increment the skip count. When one of the windows expires, the alarms can be sent again (assuming no other window and count limits are exceeded) and the tracking starts again.
Table 6 Stats Alarms  
(unless otherwise noted, default rising error threshold is 200000000 Bps; rising clear threshold is 100000000 Bps)
Average CPU utilization. The units for the cpu_util_indiv alarm are hundredths of a point of the one-minute load average. For example, setting it to 100 causes an alarm if the one-minute load average is ever over 1.0 when it is sampled. Default rising error threshold is 90%; default rising clear threshold is 70%.
Disk I/O (input/output) in kilobytes per second. Default rising error threshold is 5120 kilobytes per sec; default rising clear threshold is 4608 kilobytes per sec.
Percent free filesystem space. Default falling error threshold is 7% of disk space free; default falling clear threshold is 10% of disk space free.
Network utilization (in B/ps). Default rising error threshold is 10485760 bytes per sec; default rising clear threshold is 9437184 bytes per sec.
Percent of physical memory in current in use. Default rising error threshold is 90% of physical memory used; default rising clear threshold is 87% of physical memory used.
Paging activity (page faults). The units for the paging alarm are number of pages read from, or written to, the swap partition. The alarm is on the amount of paging activity that has occurred over the past 20 seconds. Default rising error threshold is 2000 page faults; default rising clear threshold is 1000 page faults.

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