ASM Sending Seeming False Alarms and Missing Checks

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Article ID: 141160

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Updated On:

Products

CA App Synthetic Monitor NIMSOFT CLOUD USER EXPERIENCE MONITOR DX Application Performance Management

Issue/Introduction

Seeing alerts against the monitors and not showing any issues when checking from alternate monitoring tools. 

 

Cause

Per engineering, an issue on some stations, where the Linux kernel is using too much memory.

Because there was not enough free memory for user-space, the machines were swapping heavily and most checks were rejected due to load. 

Environment

Release : 99.0

Component : CA APP SYNTHETIC MONITOR (WATCHMOUSE)

Resolution

The fix is a reboot of the station.

The following stations were rebooted and are now accepting all the checks:


Melbourne, Peth, Sofia, Vancouver, Prague, Denmark, Athens, Milan, Tokyo, Vilnius, Kuala Lumpur, Kharkov, Ho Chi Minh City, Cape Town.