Tuning Presto

The default Presto settings should work well for most workloads. The following information may help you if your cluster is facing a specific performance problem.

Config Properties

See Presto Configuration Properties.

JVM Settings

The following can be helpful for diagnosing GC issues:

1. -XX:+PrintGCApplicationConcurrentTime
2. -XX:+PrintGCApplicationStoppedTime
3. -XX:+PrintGCCause
4. -XX:+PrintGCDateStamps
5. -XX:+PrintGCTimeStamps
6. -XX:+PrintGCDetails
7. -XX:+PrintReferenceGC
8. -XX:+PrintClassHistogramAfterFullGC
9. -XX:+PrintClassHistogramBeforeFullGC
10. -XX:PrintFLSStatistics=2
11. -XX:+PrintAdaptiveSizePolicy
12. -XX:+PrintSafepointStatistics
13. -XX:PrintSafepointStatisticsCount=1