JDK-8144590 : JEP-JDK-8085796: Indify String Concatenation - Performance Plan
  • Type: JEP Task
  • Component: performance
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Fix Versions: 9
  • Submitted: 2015-12-03
  • Updated: 2016-05-24
  • Resolved: 2016-05-24
Related Reports
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Description
## Performance Requirements
* No throughput regressions against current concatenation scheme
* Only acceptable startup regressions against the current concatenation scheme

## Performance Work
* Throughput microbenchmarks
 * Done, see the results in the experimental notes
* Startup time benchmarks
 * Done, identified the issues with the initialization of java.lang.invoke infrastructure

See the experimental notes here:
http://cr.openjdk.java.net/~shade/8085796/notes.txt
Comments
JEP performance work had been completed. Waiting for performance regression reports on EA builds.
24-05-2016

The performance work for the core changes is done. Minor tuneups and switches are left before we can call performance work complete. See JDK-8148604 and JDK-8148605.
01-04-2016