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MDEV-35720 Add query_time to statistics

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Added Query_time (total time spent running queries) to status_variables.

Other things:
- Added SHOW_MICROSECOND_STATUS type that shows an ulonglong variable
  in microseconds converted to a double (in seconds).
- Changed Busy_time and Cpu_time to use SHOW_MICROSECOND_STATUS, which
  simplified the code and avoids some double divisions for each query.

Reviewed-by: Sergei Golubchik <serg@mariadb.org>
This commit is contained in:
Monty
2024-12-27 19:26:55 +02:00
parent ed5bba8a32
commit 95975b921e
7 changed files with 99 additions and 9 deletions
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2
sql/sql_class.h
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@ -1046,8 +1046,8 @@ typedef struct system_status_var
ulonglong table_open_cache_misses;
ulonglong table_open_cache_overflows;
ulonglong send_metadata_skips;
ulonglong cpu_time, busy_time, query_time;
double last_query_cost;
double cpu_time, busy_time;
uint32 threads_running;
/* Don't initialize */
/* Memory used for thread local storage */