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How Can We Determine Why Ims-ms Dequeueing Is Slow When I/O Otherwise Looks Ok? (Doc ID 1951506.1)

Last updated on MARCH 18, 2020

Applies to:

Oracle Communications Messaging Server - Version 6.0.0 and later
Information in this document applies to any platform.

Goal

Qn1:How to investigate cause of slow dequeuing from the ims-ms channel when the IO metrics seem to show no problem?
 
Qn2:How to monitor to determine if ZFS pools are becoming fragmented
and whether that is the cause of slow fdsync() calls causing Messaging Server response time problems?
 

Solution

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In this Document
Goal
Solution
 An1: Start with the delivery-perf.d DTrace script
 An2: ZFS tools
References


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