TEC Alert: "Low_IdleCPUUsage"

[Jagadesh_2]

TEC Alert: "Low_IdleCPUUsage" alert on server xxxx

details: the percentage of processor time spent in the idle state is low (17.4982390538787842 percent). The processor is overloaded

How to check (using sar -u) or is there any other way to do. How to rectify the same.

[Joseph Loo]

hi,

about sar -u:

# sar -Mu 2 10
tells u the usage of all the CPUs with 10 every 2-seconds intervals

or

# top
default 5 seconds every refresh

regards.

[Gordon Morrison · Accepted solution]

17.5% idle time is NOT overloaded. If you have any idle time at all, then you have spare CPU capacity. Use "sar -u 1 5", "glance" or "top" to see current CPU usage.

You need to change the threshold on your monitoring software. I would suggest 95% as a minimum alert threshold. (that will give you some advance warning if it does go up to 100%)

(Even 100% CPU usage is not necessarily a problem, unles you are also experiencing poor performance, batch jobs taking longer, or increasing queues or wait states)