High CPU Usage Of imapd (Doc ID 1935176.1)

Last updated on JUNE 29, 2017

Applies to:

Oracle Communications Messaging Server - Version 7.0.5 to 8.0.0 [Release 7.0.0 to 8.0.0]
Information in this document applies to any platform.

Symptoms

Initial problem description: High CPU usage by imapd processes.

At a specific day and time (every monday morning at 8 am) the cpu usage raises to almost 100% for a short period of time - about 10 minutes.

From the operating system perspective, this is not really a problem, it is just doing its work. In fact nothing to worry about. The end-users are not noticing any performance degradation.

The load averages are increasing from normally relatively low:

 

Cause

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