PostgreSQL-āĻ āĻ˛āĻ• āĻ‡āĻ¤āĻŋāĻšāĻžāĻ¸ āĻĒāĻžāĻ“āĻ¯āĻŧāĻžāĻ° āĻĒāĻĻā§āĻ§āĻ¤āĻŋāĻ—ā§āĻ˛āĻŋāĻ° āĻŽāĻ§ā§āĻ¯ā§‡ āĻāĻ•āĻŸāĻŋ

āĻ¨āĻŋāĻŦāĻ¨ā§āĻ§ā§‡āĻ° āĻ§āĻžāĻ°āĻžāĻŦāĻžāĻšāĻŋāĻ•āĻ¤āĻž "PostgreSQL-āĻāĻ° āĻœāĻ¨ā§āĻ¯ āĻāĻ•āĻŸāĻŋ ASH āĻ…ā§āĻ¯āĻžāĻ¨āĻžāĻ˛āĻ— āĻ¤ā§ˆāĻ°āĻŋ āĻ•āĻ°āĻžāĻ° āĻĒā§āĻ°āĻšā§‡āĻˇā§āĻŸāĻž "āĨ¤

āĻ¨āĻŋāĻŦāĻ¨ā§āĻ§āĻŸāĻŋ āĻĒāĻ°ā§€āĻ•ā§āĻˇāĻž āĻ•āĻ°āĻŦā§‡ āĻāĻŦāĻ‚ āĻĻā§‡āĻ–āĻžāĻŦā§‡, āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻŸ āĻĒā§āĻ°āĻļā§āĻ¨ āĻāĻŦāĻ‚ āĻ‰āĻĻāĻžāĻšāĻ°āĻŖ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻ•āĻ°ā§‡, pg_locks āĻĻāĻ°ā§āĻļāĻ¨ā§‡āĻ° āĻ‡āĻ¤āĻŋāĻšāĻžāĻ¸ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻ•āĻ°ā§‡ āĻ•ā§€ āĻĻāĻ°āĻ•āĻžāĻ°ā§€ āĻ¤āĻĨā§āĻ¯ āĻĒāĻžāĻ“āĻ¯āĻŧāĻž āĻ¯ā§‡āĻ¤ā§‡ āĻĒāĻžāĻ°ā§‡āĨ¤

āĻ¸āĻ¤āĻ°ā§āĻ•āĻŦāĻžāĻŖā§€āĨ¤
āĻŦāĻŋāĻˇāĻ¯āĻŧā§‡āĻ° āĻ¨āĻ¤ā§āĻ¨āĻ¤ā§āĻŦ āĻāĻŦāĻ‚ āĻ…āĻ¸āĻŽāĻžāĻĒā§āĻ¤ āĻĒāĻ°ā§€āĻ•ā§āĻˇāĻžāĻ° āĻ¸āĻŽāĻ¯āĻŧāĻ•āĻžāĻ˛ā§‡āĻ° āĻ•āĻžāĻ°āĻŖā§‡, āĻ¨āĻŋāĻŦāĻ¨ā§āĻ§āĻŸāĻŋāĻ¤ā§‡ āĻ¤ā§āĻ°ā§āĻŸāĻŋ āĻĨāĻžāĻ•āĻ¤ā§‡ āĻĒāĻžāĻ°ā§‡āĨ¤ āĻ¸āĻŽāĻžāĻ˛ā§‹āĻšāĻ¨āĻž āĻāĻŦāĻ‚ āĻŽāĻ¨ā§āĻ¤āĻŦā§āĻ¯ āĻĻā§ƒāĻĸāĻŧāĻ­āĻžāĻŦā§‡ āĻ¸ā§āĻŦāĻžāĻ—āĻ¤ āĻāĻŦāĻ‚ āĻĒā§āĻ°āĻ¤ā§āĻ¯āĻžāĻļāĻŋāĻ¤.

āĻ¤āĻĨā§āĻ¯ āĻ…āĻ¨ā§āĻ¤āĻ°ā§āĻ­ā§āĻ•ā§āĻ¤ā§€

pg_locks āĻ‰āĻĒāĻ¸ā§āĻĨāĻžāĻĒāĻ¨ā§‡āĻ° āĻ‡āĻ¤āĻŋāĻšāĻžāĻ¸

āĻ¸āĻ‚āĻ°āĻ•ā§āĻˇāĻŖāĻžāĻ—āĻžāĻ°_āĻ˛āĻ• āĻ•āĻ°āĻž

CREATE TABLE archive_locking 
(       timepoint timestamp without time zone ,
	locktype text ,
	relation oid ,
	mode text ,
	tid xid ,
	vtid text ,
	pid integer ,
	blocking_pids integer[] ,
	granted boolean ,
        queryid bigint 
);

āĻŽā§‚āĻ˛āĻ¤, āĻŸā§‡āĻŦāĻŋāĻ˛āĻŸāĻŋ āĻŸā§‡āĻŦāĻŋāĻ˛ā§‡āĻ° āĻ…āĻ¨ā§āĻ°ā§‚āĻĒ āĻ¸āĻ‚āĻ°āĻ•ā§āĻˇāĻŖāĻžāĻ—āĻžāĻ°_pg_stat_activityāĻāĻ–āĻžāĻ¨ā§‡ āĻ†āĻ°ā§‹ āĻŦāĻŋāĻ¸ā§āĻ¤āĻžāĻ°āĻŋāĻ¤āĻ­āĻžāĻŦā§‡ āĻŦāĻ°ā§āĻŖāĻ¨āĻž āĻ•āĻ°āĻž āĻšāĻ¯āĻŧā§‡āĻ›ā§‡- pg_stat_statements + pg_stat_activity + loq_query = pg_ash? āĻāĻŦāĻ‚ āĻāĻ–āĻžāĻ¨ā§‡ - PostgreSQL-āĻāĻ° āĻœāĻ¨ā§āĻ¯ ASH-āĻāĻ° āĻāĻ•āĻŸāĻŋ āĻ…ā§āĻ¯āĻžāĻ¨āĻžāĻ˛āĻ— āĻ¤ā§ˆāĻ°āĻŋ āĻ•āĻ°āĻžāĻ° āĻšā§‡āĻˇā§āĻŸāĻžāĨ¤

āĻāĻ•āĻŸāĻŋ āĻ•āĻ˛āĻžāĻŽ āĻĒā§‚āĻ°āĻŖ āĻ•āĻ°āĻ¤ā§‡ queryid āĻĢāĻžāĻ‚āĻļāĻ¨ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻ•āĻ°āĻž āĻšāĻ¯āĻŧ

update_history_locking_by_queryid

--update_history_locking_by_queryid.sql
CREATE OR REPLACE FUNCTION update_history_locking_by_queryid() RETURNS boolean AS $$
DECLARE
  result boolean ;
  current_minute double precision ; 
  
  start_minute integer ;
  finish_minute integer ;
  
  start_period timestamp without time zone ;
  finish_period timestamp without time zone ;
  
  lock_rec record ; 
  endpoint_rec record ; 
  
  current_hour_diff double precision ;
BEGIN
  RAISE NOTICE '***update_history_locking_by_queryid';
  
  result = TRUE ;
  
  current_minute = extract ( minute from now() );

  SELECT * FROM endpoint WHERE is_need_monitoring
  INTO endpoint_rec ;
  
  current_hour_diff = endpoint_rec.hour_diff ;
  
  IF current_minute < 5 
  THEN
	RAISE NOTICE 'Current time is less than 5 minute.';
	
	start_period = date_trunc('hour',now()) + (current_hour_diff * interval '1 hour');
    finish_period = start_period - interval '5 minute' ;
  ELSE 
    finish_minute =  extract ( minute from now() ) / 5 ;
    start_minute =  finish_minute - 1 ;
  
    start_period = date_trunc('hour',now()) + interval '1 minute'*start_minute*5+(current_hour_diff * interval '1 hour');
    finish_period = date_trunc('hour',now()) + interval '1 minute'*finish_minute*5+(current_hour_diff * interval '1 hour') ;
    
  END IF ;  
  
  RAISE NOTICE 'start_period = %', start_period;
  RAISE NOTICE 'finish_period = %', finish_period;

	FOR lock_rec IN   
	WITH act_queryid AS
	 (
		SELECT 
				pid , 
				timepoint ,
				query_start AS started ,			
				MAX(timepoint) OVER (PARTITION BY pid ,	query_start   ) AS finished ,			
				queryid 
		FROM 
				activity_hist.history_pg_stat_activity 			
		WHERE 			
				timepoint BETWEEN start_period and 
								  finish_period
		GROUP BY 
				pid , 
				timepoint ,  
				query_start ,
				queryid 
	 ),
	 lock_pids AS
		(
			SELECT
				hl.pid , 
				hl.locktype  ,
				hl.mode ,
				hl.timepoint , 
				MIN ( timepoint ) OVER (PARTITION BY pid , locktype  ,mode ) as started 
			FROM 
				activity_hist.history_locking hl
			WHERE 
				hl.timepoint between start_period and 
								     finish_period
			GROUP BY 
				hl.pid , 
				hl.locktype  ,
				hl.mode ,
				hl.timepoint 
		)
	SELECT 
		lp.pid , 
		lp.locktype  ,
		lp.mode ,
		lp.timepoint ,     
		aq.queryid 
	FROM lock_pids 	lp LEFT OUTER JOIN act_queryid aq ON ( lp.pid = aq.pid AND lp.started BETWEEN aq.started AND aq.finished )
	WHERE aq.queryid IS NOT NULL 
	GROUP BY  
		lp.pid , 
		lp.locktype  ,
		lp.mode ,
		lp.timepoint , 
		aq.queryid
	LOOP
		UPDATE activity_hist.history_locking SET queryid = lock_rec.queryid 
		WHERE pid = lock_rec.pid AND locktype = lock_rec.locktype AND mode = lock_rec.mode AND timepoint = lock_rec.timepoint ;	
	END LOOP;    
  
  RETURN result ;
END
$$ LANGUAGE plpgsql;

āĻŦā§āĻ¯āĻžāĻ–ā§āĻ¯āĻž: queryid āĻ•āĻ˛āĻžāĻŽā§‡āĻ° āĻŽāĻžāĻ¨ history_locking āĻŸā§‡āĻŦāĻŋāĻ˛ā§‡ āĻ†āĻĒāĻĄā§‡āĻŸ āĻ•āĻ°āĻž āĻšāĻ¯āĻŧ, āĻāĻŦāĻ‚ āĻ¤āĻžāĻ°āĻĒāĻ° āĻ¯āĻ–āĻ¨ archive_locking āĻŸā§‡āĻŦāĻŋāĻ˛ā§‡āĻ° āĻœāĻ¨ā§āĻ¯ āĻāĻ•āĻŸāĻŋ āĻ¨āĻ¤ā§āĻ¨ āĻĒāĻžāĻ°ā§āĻŸāĻŋāĻļāĻ¨ āĻ¤ā§ˆāĻ°āĻŋ āĻ•āĻ°āĻž āĻšāĻ¯āĻŧ, āĻ¤āĻ–āĻ¨ āĻŽāĻžāĻ¨āĻŸāĻŋ āĻāĻ¤āĻŋāĻšāĻžāĻ¸āĻŋāĻ• āĻŽāĻžāĻ¨āĻ—ā§āĻ˛āĻŋāĻ¤ā§‡ āĻ¸āĻ‚āĻ°āĻ•ā§āĻˇāĻŖ āĻ•āĻ°āĻž āĻšāĻŦā§‡āĨ¤

āĻ†āĻ‰āĻŸāĻĒā§āĻŸ

āĻ¸āĻžāĻ§āĻžāĻ°āĻŖāĻ­āĻžāĻŦā§‡ āĻĒā§āĻ°āĻ•ā§āĻ°āĻŋāĻ¯āĻŧāĻž āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ•ā§‡ āĻ¸āĻžāĻ§āĻžāĻ°āĻŖ āĻ¤āĻĨā§āĻ¯āĨ¤

āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•ā§‡āĻ° āĻœāĻ¨ā§āĻ¯ āĻ…āĻĒā§‡āĻ•ā§āĻˇāĻž āĻ•āĻ°āĻž āĻšāĻšā§āĻ›ā§‡

āĻ¤āĻĻāĻ¨ā§āĻ¤

WITH
t AS
(
	SELECT 
		locktype  ,
		mode ,
		count(*) as total 
	FROM 
		activity_hist.archive_locking
	WHERE 
		timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
		NOT granted
	GROUP BY 
		locktype  ,
		mode  
)
SELECT 
	locktype  ,
	mode ,
	total * interval '1 second' as duration			
FROM t 		
ORDER BY 3 DESC 

āĻ‰āĻĻāĻžāĻšāĻ°āĻŖ

| āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻ—ā§āĻ˛āĻŋāĻ° āĻœāĻ¨ā§āĻ¯ āĻ…āĻĒā§‡āĻ•ā§āĻˇāĻž āĻ•āĻ°āĻž +----------------------------------------------------- ------------------- | āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ| āĻŽā§‹āĻĄ| āĻ¸āĻŽāĻ¯āĻŧāĻ•āĻžāĻ˛ +------------------- +---------------------------- --+--------- | āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 19:39:26 | āĻŸāĻŋāĻĒāĻ˛ | āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 00:03:35 +-------------------------------------------- -------+------------

āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ¤āĻžāĻ˛āĻž āĻ¨ā§‡āĻ“āĻ¯āĻŧāĻž

āĻ¤āĻĻāĻ¨ā§āĻ¤

WITH
t AS
(
	SELECT 
		locktype  ,
		mode ,
		count(*) as total 
	FROM 
		activity_hist.archive_locking
	WHERE 
		timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
		granted
	GROUP BY 
		locktype  ,
		mode  
)
SELECT 
	locktype  ,
	mode ,
	total * interval '1 second' as duration			
FROM t 		
ORDER BY 3 DESC 

āĻ‰āĻĻāĻžāĻšāĻ°āĻŖ

| āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ¤āĻžāĻ˛āĻž āĻ¨ā§‡āĻ“āĻ¯āĻŧāĻž +------------------------------- --------+------------------- | āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ| āĻŽā§‹āĻĄ| āĻ¸āĻŽāĻ¯āĻŧāĻ•āĻžāĻ˛ +------------------- +---------------------------- --+--------- | āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ• | RowExclusiveLock| 51:11:10 | āĻ­āĻžāĻ°ā§āĻšā§āĻ¯āĻŧāĻžāĻ˛āĻ•ā§āĻ¸āĻŋāĻĄ| āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 48:10:43 | āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 44:24:53 | āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ• | AccessShareLock| 20:06:13 | āĻŸāĻŋāĻĒāĻ˛ | āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 17:58:47 | āĻŸāĻŋāĻĒāĻ˛ | āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 01:40:41 | āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ• | ShareUpdateExclusiveLock| 00:26:41 | āĻŦāĻ¸ā§āĻ¤ā§| RowExclusiveLock| 00:00:01 | āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 00:00:01 | āĻĒā§āĻ°āĻ¸āĻžāĻ°āĻŋāĻ¤ | āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 00:00:01 +-------------------------------------------- -------+------------

āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻŸ queryid āĻ…āĻ¨ā§āĻ°ā§‹āĻ§ā§‡āĻ° āĻŦāĻŋāĻ¸ā§āĻ¤āĻžāĻ°āĻŋāĻ¤ āĻ¤āĻĨā§āĻ¯

QUERYID āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻ—ā§āĻ˛āĻŋāĻ° āĻœāĻ¨ā§āĻ¯ āĻ…āĻĒā§‡āĻ•ā§āĻˇāĻž āĻ•āĻ°āĻž āĻšāĻšā§āĻ›ā§‡ā§ˇ

āĻ¤āĻĻāĻ¨ā§āĻ¤

WITH
lt AS
(
	SELECT
		pid , 
		locktype  ,
		mode ,
		timepoint , 
		queryid , 
		blocking_pids ,
                MIN ( timepoint ) OVER (PARTITION BY pid , locktype  ,mode ) as started  
	FROM 
		activity_hist.archive_locking
	WHERE 
		timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND 
			                  pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
		NOT granted AND
	       queryid IS NOT NULL 
	GROUP BY 
	        pid , 
		locktype  ,
		mode ,
		timepoint ,
		queryid ,
		blocking_pids 
)
SELECT 
        lt.pid , 
	lt.locktype  ,
	lt.mode ,			
        lt.started ,
	lt.queryid  ,
	lt.blocking_pids ,
	COUNT(*)  * interval '1 second'	 as duration		
FROM lt 	
GROUP BY 
	lt.pid , 
        lt.locktype  ,
	lt.mode ,			
        lt.started ,
        lt.queryid ,
	lt.blocking_pids 
ORDER BY 4

āĻ‰āĻĻāĻžāĻšāĻ°āĻŖ

| āĻ•ā§‹āĻ¯āĻŧā§‡āĻ°āĻŋāĻĄ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻ—ā§āĻ˛āĻŋāĻ° āĻœāĻ¨ā§āĻ¯ āĻ…āĻĒā§‡āĻ•ā§āĻˇāĻž āĻ•āĻ°āĻž āĻšāĻšā§āĻ›ā§‡ +---------+---------------------------------------- +-------------------------------------------------- ------------+------------ --------- | āĻĒāĻŋāĻĄ| āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ| āĻŽā§‹āĻĄ| āĻļā§āĻ°ā§ | queryid| āĻŦā§āĻ˛āĻ•āĻŋāĻ‚_āĻĒāĻŋāĻĄāĻ¸| āĻ¸āĻŽāĻ¯āĻŧāĻ•āĻžāĻ˛ +--------- +---------------------------- +------------ ---------+------------------------------- +--------- ----------------------------------------------------------------- --- | 11288| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:00.302936 | 389015618226997618| {11092}| 00:03:34 | 11626| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:21.380921 | 389015618226997618| {12380}| 00:00:29 | 11626| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:21.380921 | 389015618226997618| {11092}| 00:03:25 | 11626| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:21.380921 | 389015618226997618| {12213}| 00:01:55 | 11626| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:21.380921 | 389015618226997618| {12751}| 00:00:01 | 11629| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:24.331935 | 389015618226997618| {11092}| 00:03:22 | 11629| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:00:24.331935 | 389015618226997618| {12007}| 00:00:01 | 12007| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:05:03.327933 | 389015618226997618| {11629}| 00:00:13 | 12007| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:05:03.327933 | 389015618226997618| {11092}| 00:01:10 | 12007| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:05:03.327933 | 389015618226997618| {11288}| 00:00:05 | 12213| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻļā§‡āĻ¯āĻŧāĻžāĻ°āĻ˛āĻ•| 2019-09-17 10:06:07.328019 | 389015618226997618| {12007}| 00:00:10

QUERYID āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻ—ā§āĻ˛āĻŋ āĻ¨ā§‡āĻ“āĻ¯āĻŧāĻžā§ˇ

āĻ¤āĻĻāĻ¨ā§āĻ¤

WITH
lt AS
(
	SELECT
		pid , 
		locktype  ,
		mode ,
		timepoint , 
		queryid , 
		blocking_pids ,
                MIN ( timepoint ) OVER (PARTITION BY pid , locktype  ,mode ) as started  
	FROM 
		activity_hist.archive_locking
	WHERE 
		timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND 
			                  pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
		granted AND
		queryid IS NOT NULL 
	GROUP BY 
	        pid , 
		locktype  ,
		mode ,
		timepoint ,
		queryid ,
		blocking_pids 
)
SELECT 
        lt.pid , 
	lt.locktype  ,
	lt.mode ,			
        lt.started ,
	lt.queryid  ,
	lt.blocking_pids ,
	COUNT(*)  * interval '1 second'	 as duration			
FROM lt 	
GROUP BY 
	lt.pid , 
	lt.locktype  ,
	lt.mode ,			
        lt.started ,
	lt.queryid ,
	lt.blocking_pids 
ORDER BY 4

āĻ‰āĻĻāĻžāĻšāĻ°āĻŖ

| āĻ•ā§‹āĻ¯āĻŧā§‡āĻ°āĻŋāĻĄ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻ—ā§āĻ˛āĻŋ āĻ¨ā§‡āĻ“āĻ¯āĻŧāĻž +------------+------------+--------------------- ----------------------------------------------------- --------------------+--------------------- | āĻĒāĻŋāĻĄ| āĻ˛āĻ•āĻŸāĻžāĻ‡āĻĒ| āĻŽā§‹āĻĄ| āĻļā§āĻ°ā§ | queryid| āĻŦā§āĻ˛āĻ•āĻŋāĻ‚_āĻĒāĻŋāĻĄāĻ¸| āĻ¸āĻŽāĻ¯āĻŧāĻ•āĻžāĻ˛ +--------- +---------------------------- +------------ ---------+------------------------------- +--------- ----------------------------------------------------------------- --- | 11288| āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ•| RowExclusiveLock| 2019-09-17 10:00:00.302936 | 389015618226997618| {11092}| 00:03:34 | 11092| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 2019-09-17 10:00:00.302936 | 389015618226997618| {}| 00:03:34 | 11288| āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ•| RowExclusiveLock| 2019-09-17 10:00:00.302936 | 389015618226997618| {}| 00:00:10 | 11092| āĻ¸āĻŽā§āĻĒāĻ°ā§āĻ•| RowExclusiveLock| 2019-09-17 10:00:00.302936 | 389015618226997618| {}| 00:03:34 | 11092| āĻ­āĻžāĻ°ā§āĻšā§āĻ¯āĻŧāĻžāĻ˛āĻ•ā§āĻ¸āĻŋāĻĄ| āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 2019-09-17 10:00:00.302936 | 389015618226997618| {}| 00:03:34 | 11288| āĻ­āĻžāĻ°ā§āĻšā§āĻ¯āĻŧāĻžāĻ˛āĻ•ā§āĻ¸āĻŋāĻĄ| āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 2019-09-17 10:00:00.302936 | 389015618226997618| {11092}| 00:03:34 | 11288| āĻ˛ā§‡āĻ¨āĻĻā§‡āĻ¨ āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 2019-09-17 10:00:00.302936 | 389015618226997618| {11092}| 00:03:34 | 11288| āĻŸāĻŋāĻĒāĻ˛ | āĻāĻ•ā§āĻ¸āĻ•ā§āĻ˛ā§āĻ¸āĻŋāĻ­ āĻ˛āĻ•| 2019-09-17 10:00:00.302936 | 389015618226997618| {11092}| 00:03:34

āĻ•āĻ°ā§āĻŽāĻ•ā§āĻˇāĻŽāĻ¤āĻž āĻ˜āĻŸāĻ¨āĻž āĻŦāĻŋāĻļā§āĻ˛ā§‡āĻˇāĻŖ āĻ•āĻ°āĻ¤ā§‡ āĻ˛āĻ• āĻ‡āĻ¤āĻŋāĻšāĻžāĻ¸ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻ•āĻ°ā§‡.

  1. queryid=389015618226997618 āĻāĻ° āĻ¸āĻžāĻĨā§‡ āĻāĻ•āĻŸāĻŋ āĻ…āĻ¨ā§āĻ°ā§‹āĻ§ pid=11288 āĻ¸āĻš āĻāĻ•āĻŸāĻŋ āĻĒā§āĻ°āĻ•ā§āĻ°āĻŋāĻ¯āĻŧāĻž āĻĻā§āĻŦāĻžāĻ°āĻž āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻŋāĻ¤ āĻšāĻ¯āĻŧā§‡āĻ›ā§‡ 2019-09-17 10:00:00 āĻĨā§‡āĻ•ā§‡ 3 āĻŽāĻŋāĻ¨āĻŋāĻŸā§‡āĻ° āĻœāĻ¨ā§āĻ¯ āĻŦā§āĻ˛āĻ• āĻ•āĻ°āĻžāĻ° āĻœāĻ¨ā§āĻ¯ āĻ…āĻĒā§‡āĻ•ā§āĻˇāĻž āĻ•āĻ°āĻ›āĻŋāĻ˛ā§ˇ
  2. āĻĒāĻŋāĻĄ = 11092 āĻ¸āĻš āĻāĻ•āĻŸāĻŋ āĻĒā§āĻ°āĻ•ā§āĻ°āĻŋāĻ¯āĻŧāĻž āĻĻā§āĻŦāĻžāĻ°āĻž āĻ˛āĻ•āĻŸāĻŋ āĻ°āĻžāĻ–āĻž āĻšāĻ¯āĻŧā§‡āĻ›āĻŋāĻ˛
  3. pid=11092 queryid=389015618226997618 2019-09-17 āĻĨā§‡āĻ•ā§‡ 10:00:00 āĻĨā§‡āĻ•ā§‡ āĻļā§āĻ°ā§ āĻ•āĻ°ā§‡ 3 āĻŽāĻŋāĻ¨āĻŋāĻŸā§‡āĻ° āĻœāĻ¨ā§āĻ¯ āĻ˛āĻ• āĻ†āĻŸāĻ•ā§‡ āĻ°ā§‡āĻ–ā§‡ āĻāĻ•āĻŸāĻŋ āĻ…āĻ¨ā§āĻ°ā§‹āĻ§ āĻšāĻžāĻ˛āĻžāĻ¨ā§‹āĻ° āĻāĻ•āĻŸāĻŋ āĻĒā§āĻ°āĻ•ā§āĻ°āĻŋāĻ¯āĻŧāĻžāĨ¤

āĻĢāĻ˛āĻžāĻĢāĻ˛

āĻāĻ–āĻ¨, āĻ†āĻŽāĻŋ āĻ†āĻļāĻž āĻ•āĻ°āĻŋ, āĻ¸āĻŦāĻšā§‡āĻ¯āĻŧā§‡ āĻ†āĻ•āĻ°ā§āĻˇāĻŖā§€āĻ¯āĻŧ āĻāĻŦāĻ‚ āĻĻāĻ°āĻ•āĻžāĻ°ā§€ āĻ…āĻ‚āĻļāĻŸāĻŋ āĻļā§āĻ°ā§ āĻšāĻŦā§‡ - āĻĒāĻ°āĻŋāĻ¸āĻ‚āĻ–ā§āĻ¯āĻžāĻ¨ āĻ¸āĻ‚āĻ—ā§āĻ°āĻš āĻ•āĻ°āĻž āĻāĻŦāĻ‚ āĻ…āĻĒā§‡āĻ•ā§āĻˇāĻž āĻāĻŦāĻ‚ āĻŦā§āĻ˛āĻ•āĻŋāĻ‚āĻ¯āĻŧā§‡āĻ° āĻ‡āĻ¤āĻŋāĻšāĻžāĻ¸ā§‡āĻ° āĻ•ā§‡āĻ¸ āĻŦāĻŋāĻļā§āĻ˛ā§‡āĻˇāĻŖ āĻ•āĻ°āĻžāĨ¤

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āĻ†āĻŽāĻŋ āĻ¨āĻŋāĻ•āĻŸ āĻ­āĻŦāĻŋāĻˇā§āĻ¯āĻ¤ā§‡ āĻ—āĻŋāĻĨā§āĻŦā§‡ āĻĒā§āĻ°āĻ•āĻ˛ā§āĻĒāĻŸāĻŋ āĻĒā§‹āĻ¸ā§āĻŸ āĻ•āĻ°āĻžāĻ° āĻšā§‡āĻˇā§āĻŸāĻž āĻ•āĻ°āĻŦāĨ¤

āĻ‰āĻ¤ā§āĻ¸: www.habr.com

āĻāĻ•āĻŸāĻŋ āĻŽāĻ¨ā§āĻ¤āĻŦā§āĻ¯ āĻœā§āĻĄāĻŧā§āĻ¨