Troubleshooting
Problem
CPU increases drastically when using the tool in an EventReader with more than 10 Filters
Symptom
The host's CPU utilisation by Impact becomes excessively high when the Analyze Event Mapping tool of the EventReader is used against a configuration in excess of 10 Filters.
Cause
This has been identified as a product defect under APAR IV22560 "ANALYZE EVENT MAPPING TOOL FAILS AND HAMMERS CPU" [link below]
Resolving The Problem
The fix has been confirmed as resolving the behaviour by both Level 3 and Level 2 Support in independent tests.
With the code fix in place it is then enabled by the setting of the property - for Impact 5.1.1:
analyzer.bypass=true
for Impact 6.x:
impact.analyzer.bypass=true
in the file - for Impact 5.1.1:
$NCHOME/guiserver/etc/server.props
for Impact 6.x:
$NCHOME/impact/server/server.props
The fix is designed to circumvent the Filter overlap analysis tool part of the Analyze Event Map if the number of Filters is greater than 10.
The fix produces the message:
INFO [CommonFilterAnalysis] analyzer.bypass read from server.props is: true
In the netcool.log file following start-up to indicate that the property is enabled. If not enabled this reads:
INFO [CommonFilterAnalysis] analyzer.bypass read from server.props is: false
So that either way confirmation is provided that the fix is in place, even if it is not enabled.
APAR IV22560 is fixed in:
IBM Tivoli Netcool/Impact V5.1.1 Fix Pack 2 (5.1.1-TIV-NCI-FP0002) onwards
IBM Tivoli Netcool/Impact V6.1.0 Fix Pack 2(6.1.0-TIV-NCI-FP0002) onwards
IBM Tivoli Netcool/Impact V6.1.1 Fix Pack 1 (6.1.1-TIV-NCI-FP0001) onwards
IBM Tivoli Business Service Manager V6.1.1 Fix Pack 1(6.1.1-TIV-BSM-FP0001) onwards
IBM Tivoli Business Service Manager V6.1.0 Fix Pack 2(6.1.0-TIV-BSM-FP0002) onwards
Relevance to Impact 7 has not been confirmed at time of publication.
Related Information
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Document Information
Modified date:
17 June 2018
UID
swg21627143