Support Article
Contention for checking access rules for tracer events
SA-34713
Summary
Contention on Tracer internals: A check for sending Tracer events when a user is denied access to a role via Rule-Access-* rules. This is showing up in YourKit as blocking interactive HTTP users ~30-40% of the time.
Error Messages
Not Applicable
Steps to Reproduce
No specific steps, during performance profiling user observed that there is some contention when they check for tracer to log trace events for access denials
Root Cause
There is unnecessary contention in the environment for a check related to logging trace events for access denied requests.
Resolution
Apply HFix-32859
Description of Changes:
A prconfig switch to disable these tracer checks, since we know that tracer is not used in census
Additional Installation Instructions:
the prconfig to enable is:tracer/Enable Access Denied Events.The default is true. It should be made false to enable this optimization.
Published March 10, 2017 - Updated October 8, 2020
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