3 Commits

Author	SHA1	Message	Date
Sergei Petrunia	68ed3a81f2	MDEV-20854: ANALYZE for statements: not clear where the time is spent ... Count the "gap" time between table accesses and display it as r_other_time_ms in the "table" element. * The advantage of this approach is that it doesn't add any new my_timer_cycles() calls. * The disadvantage is that the definition of what is done during "other time" is not that clear: it includes checking the WHERE (for this table), constructing index lookup tuple (for the next table) writing to GROUP BY temporary table (as we dont account for that time separately [yet], etc)	2019-11-12 14:40:00 +03:00
Galina Shalygina	447e0f023f	MDEV-18144: ANALYZE for statement support for PK filters ... ANALYZE and ANALYZE FORMAT=JSON structures are changed in the way that they show additional information when rowid filter is used: - r_selectivity_pct - the observed filter selectivity - r_buffer_size - the size of the rowid filter container buffer - r_filling_time_ms - how long it took to fill rowid filter container New class Rowid_filter_tracker was added. This class is needed to collect data about how rowid filter is executed.	2019-02-06 23:40:07 +03:00
Daniel Black	10b1f4dd09	MDEV-11866: ANALYZE FORMAT=JSON not predicatable for r_total_time_ms/r_buffer_size ... [0-9]*[.]?[0-9]* wasn't a sufficient regex to cover the %lg used in Json_writer::add_double. Exponent formats where missed. Here we normalize all the replace_regex expressions for ANALYZE FORMAT=JSON into one include file. Signed-off-by: Daniel Black <daniel.black@au.ibm.com>	2017-01-23 14:13:53 +11:00