Mark Robert Miller created SOLR-15477:
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Summary: Logging Performance
Key: SOLR-15477
URL: https://issues.apache.org/jira/browse/SOLR-15477
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Mark Robert Miller
Once you remove almost all performance issues and unnecessary garbage
generation, logging starts to sit at the top of method and gc perf profiling
(well, xml config still competes on gc - you can improve that 90% and it's
still fights to be king of the hill) during test runs. This is the case even
with fairly reduced logging and configuration optimizations.
At that point, exception logging is the big killer (no garbage free option), so
in a mostly clean running system this will likely be less the case.
There are a variety of configuration options that can boost the logging impact.
Fairly critical to it all is telling log4j2 that no, Solr is not a webapp,
please dont punish.
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