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Lock contention on AIX running Guardium Stap with a single Ktap buffer

Troubleshooting


Problem

This article describes a situation that can occur in AIX environments running Guardium STAP configured with a single ktap buffer. 

Symptom

In a kernel trace it may be observed that read\write system calls which would normally take 20 microseconds taking hundreds of milliseconds or in some situations over a second.  To an end user these increases in system call completion time may translate into installed applications on the server performing less optimally. 

Document Location

Worldwide

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Document Information

Modified date:
29 April 2025

UID

ibm17184868