High CPU Usage Of imapd
(Doc ID 1935176.1)
Last updated on MARCH 18, 2019
Applies to:Oracle Communications Messaging Server - Version 7.0.5 to 8.0.0 [Release 7.0.0 to 8.0.0]
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on x86-64 (64-bit)
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:
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