EDB Stat Monitor 2.1.0 release notes

The digest logic has been added to the collection of execution time data, allowing for the calculation of more precise quantiles. This enhancement improves the accuracy of query performance analysis by providing better insights into execution time distribution.

Captures a subset of incoming queries. This provides a representative "taste" of system activity, offering crucial insights into performance and usage.

A new GUC parameter, edbsm_td_compression, has been introduced to control the compression level of the t-digest data structure. This allows users to optimize the balance between memory usage and accuracy in execution time quantile calculations.

The new GUC parameter edbsm_sample_rate has been added to control the sampling rate for query execution statistics. This feature allows users to adjust the frequency of data collection, enabling more efficient resource usage while still capturing essential performance metrics.

The new function edb_stat_monitor_td_histogram has been added to display the t-digest histogram. This function provides a visual representation of the execution time distribution, helping users to better understand query performance patterns.

The new function edb_stat_monitor_td_quantile has been introduced to calculate percentiles using the t-digest algorithm. This function allows users to obtain precise quantile values for execution times, enhancing performance analysis capabilities.