🥇Imwe yenzira dzekutora nhoroondo yekiyi muPostgreSQL

Kuenderera mberi kwechinyorwa chino “Kuedza kugadzira analogue yeASH yePostgreSQL ".

Chinyorwa chichaongorora uye kuratidza, uchishandisa chaiyo mibvunzo uye mienzaniso, ndeupi ruzivo runobatsira runogona kuwanikwa uchishandisa nhoroondo yeiyo pg_locks maonero.

Warning
Nekuda kwehutsva hwechinyorwa uye nenguva isina kupera yekuyedza, chinyorwa chinogona kunge chine zvikanganiso. Kutsoropodza nekutaura zvinogamuchirwa zvakasimba uye zvinotarisirwa.

Input data

Nhoroondo ye pg_locks inomiririra

archive_locking

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 
);

Chaizvoizvo, tafura yakafanana netafura archive_pg_stat_activity, inotsanangurwa zvakadzama pano - pg_stat_statements + pg_stat_activity + loq_query = pg_ash? uye pano - Kuedza kugadzira analogue yeASH yePostgreSQL.

Kuzadza chikamu queryid basa rinoshandiswa

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;

Tsananguro: kukosha kweiyo queryid column inogadziridzwa munhoroondo_yekuvhara tafura, uyezve kana chikamu chitsva chagadzirwa cheiyo archive_locking tafura, kukosha kunochengetwa munhoroondo tsika.

Zvinyorwa

General ruzivo pamusoro pemaitiro muhuwandu.

KUMIRIRA MAKHI NEKUKAYA

Kumbira

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

Muenzaniso:

| KUMIRIRA MAKAKI NEMAKHIYA +------------------------------------------------------------------ ------------------- | locktype| mode| nguva +------------------------------------------------ - --+-------------------- | transactionid| ShareLock| 19:39:26 | tuple| AccessExclusiveLock| 00:03:35 +--------------------------------------------- - -------+-----------

KUTORA MAKHI NEKUKIYA

Kumbira

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

Muenzaniso:

| KUTORA MAKAKI NEMAKHIYA +---------------------------------------------- --------+-------------------- | locktype| mode| nguva +------------------------------------------------ - --+-------------------- | ukama| RowExclusiveLock| 51:11:10 | virtualxid| ExclusiveLock| 48:10:43 | transactionid| ExclusiveLock| 44:24:53 | ukama| AccessShareLock| 20:06:13 | tuple| AccessExclusiveLock| 17:58:47 | tuple| ExclusiveLock| 01:40:41 | ukama| ShareUpdateExclusiveLock| 00:26:41 | chinhu| RowExclusiveLock| 00:00:01 | transactionid| ShareLock| 00:00:01 | extend| ExclusiveLock| 00:00:01 +-------------------------------------------- - -------+-----------

Ruzivo rwakadzama pane chaiyo queryid zvikumbiro

TAKAMIRIRA MAKHI NEKUKHIYA NEQUERYID

Kumbira

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

Muenzaniso:

| KUMIRIRA MAKAKI NEMAKIYA NE QUERYID +----------+-----------+----- ---------------------------- +-------------------------------- ----------------- - + ------------------------------------------------- pid| locktype| mode| akatanga| queryid| blocking_pids| nguva +-------------------------------------------------- ---------+---------------------------------------- --------------------------------------------------- --- | 11288| transactionid| ShareLock| 2019-09-17 10:00:00.302936| 389015618226997618| {11092}| 00:03:34 | 11626| transactionid| ShareLock| 2019-09-17 10:00:21.380921| 389015618226997618| {12380}| 00:00:29 | 11626| transactionid| ShareLock| 2019-09-17 10:00:21.380921| 389015618226997618| {11092}| 00:03:25 | 11626| transactionid| ShareLock| 2019-09-17 10:00:21.380921| 389015618226997618| {12213}| 00:01:55 | 11626| transactionid| ShareLock| 2019-09-17 10:00:21.380921| 389015618226997618| {12751}| 00:00:01 | 11629| transactionid| ShareLock| 2019-09-17 10:00:24.331935| 389015618226997618| {11092}| 00:03:22 | 11629| transactionid| ShareLock| 2019-09-17 10:00:24.331935| 389015618226997618| {12007}| 00:00:01 | 12007| transactionid| ShareLock| 2019-09-17 10:05:03.327933| 389015618226997618| {11629}| 00:00:13 | 12007| transactionid| ShareLock| 2019-09-17 10:05:03.327933| 389015618226997618| {11092}| 00:01:10 | 12007| transactionid| ShareLock| 2019-09-17 10:05:03.327933| 389015618226997618| {11288}| 00:00:05 | 12213| transactionid| ShareLock| 2019-09-17 10:06:07.328019| 389015618226997618| {12007}| 00:00:10

KUTORA MAKHI NEMAKHITYPES NEQUERYID

Kumbira

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

Muenzaniso:

| KUTORA MAKAKI NEMAKHIYA NE QUERYID +----------+-------------------------------------------+ ---------------------------------------------------+ --------------------+--------------------------------------------------------------------------------------------------------------------------------------------------- | pid| locktype| mode| akatanga| queryid| blocking_pids| nguva +-------------------------------------------------- ---------+---------------------------------------- --------------------------------------------------- --- | 11288| ukama| RowExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {11092}| 00:03:34 | 11092| transactionid| ExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {}| 00:03:34 | 11288| ukama| RowExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {}| 00:00:10 | 11092| ukama| RowExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {}| 00:03:34 | 11092| virtualxid| ExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {}| 00:03:34 | 11288| virtualxid| ExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {11092}| 00:03:34 | 11288| transactionid| ExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {11092}| 00:03:34 | 11288| tuple| AccessExclusiveLock| 2019-09-17 10:00:00.302936| 389015618226997618| {11092}| 00:03:34

Kushandisa nhoroondo yekukiya kuongorora zviitiko zvekuita.

Chikumbiro chine queryid=389015618226997618 chaitwa neipid=11288 yanga yakamirira kuvharirwa kutanga kubva 2019-09-17 10:00:00 kwemaminetsi matatu.
Kukiyiwa kwakabatwa nemaitiro ane pid=11092
Maitiro ane pid=11092 kuita chikumbiro ne queryid=389015618226997618 kutanga kubva 2019-09-17 10:00:00 akabata kiyi kwemaminetsi matatu.

Mugumisiro

Iye zvino, ndinovimba, chikamu chinonakidza uye chinobatsira chichatanga - kuunganidza zviverengero uye kuongorora nyaya dzenhoroondo yekumirira uye kuvhara.

Mune ramangwana, ndinoda kutenda, tichawana seti yemamwe manotsi (akafanana neOracle's metalink).

Kazhinji, ndicho chikonzero nei nzira inoshandiswa inoitwa kuti iwanikwe kune wese munhu nekukurumidza sezvinobvira.

Ini ndichaedza kutumira purojekiti pa github munguva pfupi iri kutevera.

Source: www.habr.com

Imwe yenzira dzekutora nhoroondo yekukiya muPostgreSQL

Input data

Nhoroondo ye pg_locks inomiririra

Zvinyorwa

KUMIRIRA MAKHI NEKUKAYA

KUTORA MAKHI NEKUKIYA

TAKAMIRIRA MAKHI NEKUKHIYA NEQUERYID

KUTORA MAKHI NEMAKHITYPES NEQUERYID

Mugumisiro

Voeg kukanzura mhinduro