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2000428 - ICM randomly not running with trace file filled by repeated log "no more free event-flags"

Symptom

ICM status randomly shows "not running" (red light) via SMICM and back to "running" after a refresh.

ICM_not_running.PNG

ICM trace file dev_icm was filled by below entries:

[Thr 139715372201728] *** ERROR => no more free event-flags. [mpixx_mt.c   5787]
[Thr 139715372201728] MpiIEvtOpen: retry with next key

The issue usually occurs on system peak wrokload period and users report that they are not able to connect to the ICM.


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Environment

Issue happens on Oracle Linux 6.x

Keywords

no more free event-flags, retry with next key, ICM, not running, Oracle Linux 6.x, /etc/sysctl.conf , KBA , BC-CST-IC , Internet Communication Manager , Problem

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