Slow EM performance when CDV connects

Products

• CA Application Performance Management Agent (APM / Wily / Introscope)
• INTROSCOPE

Issue/Introduction

Description:

EM log file shows the following message:-

[INFO] [PO Route Down Executor] [Manager] CDV Introscope Enterprise Manager disconnected: Node=Workstation_22499, address=collector.test.com/xxx.xxx.xxx.xxx:5001,

[WARN] [master clock] [Manager.Clock] Timeslice processing delayed due to system activity. Combining data from timeslices 91630287 to 91630293

Also perflog show slightly high GC and skipped timeslices:

8/31/13 08:42:31 AM ART,2595,1253,4,0,1654,424,2,110356,19,0,128591,188,0,170,0,0,14,0,0,0,319,163,1215081,0,0,0,0,0,0,0,
8/31/13 08:42:46 AM ART,2595,1446,4,0,2081,550,2,110234,19,0,120481,188,0,170,0,0,15,0,0,0,261,201,1215096,0,0,0,0,0,0,0,
8/31/13 08:46:24 AM ART,2595,262,5,0,82265,0,2,110191,19,0,1298972,188,0,170,0,0,70,0,0,0,5337,3058,1215166,0,249,0,299,0,248,1172,

Solution:

The problem is caused by a large number of javascript calculators that are hot deploying to a Collector from a CDV that connects to it. It can be overcome by stopping this and setting this property in the IntroscopeEnterpriseManager.properties file on the CDV:

introscope.enterprisemanager.javascript.hotdeploy.collectors.enable=false

This property does not require a restart.

Environment

Release:
Component: APMISP