How Statistics Work
Each application or cache server that joins the distributed system can collect and archive statistical data for analyzing system performance.
When Java applications and servers join a distributed system, they can be configured via the cluster configuration service to enable statistics sampling and whether to archive the statistics that are gathered.
GemFire statistics use the Java
System.nanoTimer for nanosecond timing. This method provides nanosecond precision, but not necessarily nanosecond accuracy. For more information, see the online Java documentation for
System.nanoTimer for the JRE you are using with GemFire.
Statistics sampling provides valuable information for ongoing system tuning and troubleshooting. Sampling statistics (not including time-based statistics) at the default sample rate does not impact overall distributed system performance. We recommend enabling statistics sampling in production environments. We do not recommend enabling time-based statistics (configured with the enable-time-statistics property) in production environments.