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Igbiyanju lati ṣẹda afọwọṣe ASH fun PostgreSQL

Igbekalẹ iṣoro naa

Lati mu awọn ibeere PostgreSQL ṣiṣẹ, agbara lati ṣe itupalẹ itan iṣẹ ṣiṣe, ni pataki, awọn iduro, awọn titiipa, ati awọn iṣiro tabili, jẹ iwulo pupọ.

Awọn anfani to wa

Irinṣẹ Iṣayẹwo Iṣe-iṣẹ Itan tabi “AWR fun Postgres”: ojutu ti o nifẹ pupọ, ṣugbọn ko si itan-akọọlẹ pg_stat_activity ati pg_locks.

pgsentinel itẹsiwaju :
«Gbogbo alaye ti a kojọpọ ti wa ni ipamọ nikan ni Ramu, ati iye iranti ti o jẹ ni ofin nipasẹ nọmba awọn igbasilẹ ti o fipamọ kẹhin.

Aaye queryid ti wa ni afikun - ibeere kanna lati pg_stat_statements itẹsiwaju (fifi sori ẹrọ nilo).«

Eyi, nitorinaa, yoo ṣe iranlọwọ pupọ, ṣugbọn ohun ti o ni wahala julọ ni aaye akọkọ. ”Gbogbo alaye akojo ti wa ni ipamọ nikan ni Ramu ”, i.e. ipa kan wa lori ipilẹ ibi-afẹde. Ni afikun, ko si itan titiipa ati awọn iṣiro tabili. Awon. Ojutu ni gbogbogbo n sọrọ pe: “Ko si package ti o ṣetan fun fifi sori ẹrọ sibẹsibẹ. O daba lati ṣe igbasilẹ awọn orisun ati pejọ ile-ikawe funrararẹ. O nilo akọkọ lati fi idii “idagbasoke” sori olupin rẹ ki o ṣeto ọna si pg_config ni oniyipada PATH.".

Ni gbogbogbo, ariwo pupọ wa, ati ninu ọran ti awọn apoti isura infomesonu iṣelọpọ pataki, o le ma ṣee ṣe lati ṣe ohunkohun pẹlu olupin naa. A nilo lati tun wa pẹlu nkan ti ara wa lẹẹkansi.

Ikilo

Nitori iwọn didun ti o tobi pupọ ati nitori akoko idanwo ti ko pe, nkan naa jẹ nipataki ti iseda alaye, dipo bi eto awọn iwe-ọrọ ati awọn abajade agbedemeji.
Awọn ohun elo alaye diẹ sii yoo pese sile nigbamii, ni awọn apakan

Akọpamọ awọn ibeere fun ojutu

O jẹ dandan lati ṣe agbekalẹ ohun elo kan ti o fun ọ laaye lati fipamọ:

itan iwo pg_stat_activity
Itan titiipa igba nipa lilo wiwo pg_locks

Ibeere ojutu–dinku ipa lori ibi ipamọ data ibi-afẹde.

Gbogbogbo agutan- Aṣoju ikojọpọ data ti ṣe ifilọlẹ kii ṣe ni ibi ipamọ data ibi-afẹde, ṣugbọn ninu aaye data ibojuwo bi iṣẹ eto kan. Bẹẹni, diẹ ninu awọn ipadanu data ṣee ṣe, ṣugbọn eyi kii ṣe pataki fun ijabọ, ṣugbọn ko si ipa lori ibi ipamọ data ibi-afẹde ni awọn ofin ti iranti ati aaye disk. Ati ninu ọran ti lilo adagun asopọ kan, ipa lori awọn ilana olumulo jẹ iwonba.

Awọn ipele imuse

1.Service tabili

Ilana ti o yatọ ni a lo lati tọju awọn tabili, ki o má ba ṣe idiju iṣiro ti awọn tabili akọkọ ti a lo.

DROP SCHEMA IF EXISTS activity_hist ;
CREATE SCHEMA activity_hist AUTHORIZATION monitor ;

Pàtàkì: Ilana naa ko ṣẹda ni ibi ipamọ data ibi-afẹde, ṣugbọn ninu aaye data ibojuwo.

itan iwo pg_stat_activity

Tabili kan ni a lo lati tọju awọn aworan iwoyi lọwọlọwọ ti wiwo pg_stat_activity

aṣayan iṣẹ-ṣiṣe.history_pg_stat_activity:

--ACTIVITY_HIST.HISTORY_PG_STAT_ACTIVITY
DROP TABLE IF EXISTS activity_hist.history_pg_stat_activity;
CREATE TABLE activity_hist.history_pg_stat_activity
(
  timepoint timestamp without time zone ,
  datid             oid  , 
  datname           name ,
  pid               integer,
  usesysid          oid    ,
  usename           name   ,
  application_name  text   ,
  client_addr       inet   ,
  client_hostname   text   ,
  client_port       integer,
  backend_start     timestamp with time zone ,
  xact_start        timestamp with time zone ,
  query_start       timestamp with time zone ,
  state_change      timestamp with time zone ,
  wait_event_type   text ,                     
  wait_event        text ,                   
  state             text ,                  
  backend_xid       xid  ,                 
  backend_xmin      xid  ,                
  query             text ,               
  backend_type      text ,  
  queryid           bigint
);

Lati titẹ sii titẹ sii - ko si awọn atọka tabi awọn ihamọ.

Lati tọju itan funrararẹ, tabili ti o pin ni a lo:

aṣayan iṣẹ-ṣiṣe_hist.archive_pg_stat_activity:

DROP TABLE IF EXISTS activity_hist.archive_pg_stat_activity;
CREATE TABLE activity_hist.archive_pg_stat_activity
(
  timepoint timestamp without time zone ,
  datid             oid  , 
  datname           name ,
  pid               integer,
  usesysid          oid    ,
  usename           name   ,
  application_name  text   ,
  client_addr       inet   ,
  client_hostname   text   ,
  client_port       integer,
  backend_start     timestamp with time zone ,
  xact_start        timestamp with time zone ,
  query_start       timestamp with time zone ,
  state_change      timestamp with time zone ,
  wait_event_type   text ,                     
  wait_event        text ,                   
  state             text ,                  
  backend_xid       xid  ,                 
  backend_xmin      xid  ,                
  query             text ,               
  backend_type      text ,
  queryid           bigint
)
PARTITION BY RANGE (timepoint);

Niwon ninu ọran yii ko si awọn ibeere fun iyara titẹ sii, diẹ ninu awọn atọka ti ṣẹda lati mu ki awọn ẹda ti awọn iroyin pọ si.

Itan idinamọ igba

Tabili kan ni a lo lati tọju awọn aworan iwoyi lọwọlọwọ ti awọn titiipa igba:

aṣayan iṣẹ-ṣiṣe.history_locking:

--ACTIVITY_HIST.HISTORY_LOCKING
DROP TABLE IF EXISTS activity_hist.history_locking;
CREATE TABLE activity_hist.history_locking
(
	timepoint timestamp without time zone ,
	locktype text ,
	relation oid ,
	mode text ,
	tid xid ,
	vtid text ,
	pid integer ,
	blocking_pids integer[] ,
	granted boolean
);

Pẹlupẹlu, lati mu titẹ sii, ko si awọn atọka tabi awọn ihamọ.

Lati tọju itan funrararẹ, tabili ti o pin ni a lo:

function_hist.archive_locking:

DROP TABLE IF EXISTS activity_hist.archive_locking;
CREATE TABLE activity_hist.archive_locking
(
	timepoint timestamp without time zone ,
	locktype text ,
	relation oid ,
	mode text ,
	tid xid ,
	vtid text ,
	pid integer ,
	blocking_pids integer[] ,
	granted boolean	
)
PARTITION BY RANGE (timepoint);

Niwon ninu ọran yii ko si awọn ibeere fun iyara titẹ sii, diẹ ninu awọn atọka ti ṣẹda lati mu ki awọn ẹda ti awọn iroyin pọ si.

2.Filling jade ti isiyi itan

Lati gba awọn aworan iwoye taara, a lo iwe afọwọkọ bash ti o nṣiṣẹ iṣẹ plpgsql.

gba_akitiyan_current.sh

#!/bin/bash
#########################################################
#get_current_activity.sh

ERROR_FILE='/home/demon/get_current_activity'$(date +%Y%m%d-)'T'$(date +%H)$(date +%M)$(date +%S)
host=$1
s_name=$2
s_pass=$3

psql  -A -t -q -v ON_ERROR_STOP=1 -c "SELECT activity_hist.get_current_activity( '$host' , '$s_name' , '$s_pass' )" >/dev/null 2>$ERROR_FILE

line_count=`cat $ERROR_FILE | wc -l`
if [[ $line_count != '0' ]];
then
    rm -f /home/demon/*.err >/dev/null 2>/dev/null
	cp $ERROR_FILE $ERROR_FILE'.err' >/dev/null 2>/dev/null  
fi
rm $ERROR_FILE >/dev/null 2>/dev/null
exit 0

plpgsql Iṣẹ dblink n wọle si awọn iwo ni ibi ipamọ data ibi-afẹde ati fi awọn ori ila sinu awọn tabili iṣẹ ni ibi ipamọ data ibojuwo.

gba_akitiyan_current.sql

CREATE OR REPLACE FUNCTION activity_hist.get_current_activity( current_host text , current_s_name text , current_s_pass text ) RETURNS BOOLEAN AS $$
DECLARE 
  database_rec record;
  dblink_str text ;
BEGIN   

	EXECUTE 'SELECT dblink_connect(''LINK1'',''host='||current_host||' port=5432 dbname=postgres'||
	                                         ' user='||current_s_name||' password='||current_s_pass|| ' '')';



--------------------------------------------------------------------
--GET pg_stat_activity stats
	INSERT INTO activity_hist.history_pg_stat_activity
	(
		SELECT * FROM dblink('LINK1',
			'SELECT 
			now() , 
			datid             , 
			datname           ,
			pid               ,
			usesysid              ,
			usename              ,
			application_name     ,
			client_addr          ,
			client_hostname      ,
			client_port       ,
			backend_start         ,
			xact_start            ,
			query_start           ,
			state_change          ,
			wait_event_type    ,                     
			wait_event         ,                   
			state              ,                  
			backend_xid         ,                 
			backend_xmin        ,                
			query              ,               
			backend_type   			
		FROM pg_stat_activity
		') 
		AS t (
		    timepoint 		  timestamp without time zone ,			
			datid             oid  , 
			datname           name ,
			pid               integer,
			usesysid          oid    ,
			usename           name   ,
			application_name  text   ,
			client_addr       inet   ,
			client_hostname   text   ,
			client_port       integer,
			backend_start     timestamp with time zone ,
			xact_start        timestamp with time zone ,
			query_start       timestamp with time zone ,
			state_change      timestamp with time zone ,
			wait_event_type   text ,                     
			wait_event        text ,                   
			state             text ,                  
			backend_xid       xid  ,                 
			backend_xmin      xid  ,                
			query             text ,               
			backend_type      text 			
		)
	);

---------------------------------------	
--ACTIVITY_HIST.HISTORY_LOCKING	
	INSERT INTO activity_hist.history_locking
	(
		SELECT * FROM dblink('LINK1',
			'SELECT 
			now() , 
			lock.locktype,
			lock.relation,
			lock.mode,
			lock.transactionid as tid,
			lock.virtualtransaction as vtid,
			lock.pid,
			pg_blocking_pids(lock.pid), 
			lock.granted
			FROM 	pg_catalog.pg_locks lock LEFT JOIN pg_catalog.pg_database db ON db.oid = lock.database
			WHERE NOT lock.pid = pg_backend_pid()	
		') 
		AS t (
			timepoint timestamp without time zone ,
			locktype text ,
			relation oid , 
			mode text ,
			tid xid ,
			vtid text ,
			pid integer ,
			blocking_pids integer[] ,
			granted boolean
		)
	);
	PERFORM dblink_disconnect('LINK1');
	
	RETURN TRUE ;
END
$$ LANGUAGE plpgsql;

Lati gba awọn aworan iwoye, iṣẹ eto ati awọn iwe afọwọkọ meji ni a lo:

pg_current_activity.iṣẹ

# /etc/systemd/system/pg_current_activity.service
[Unit]
Description=Collect history of pg_stat_activity , pg_locks 
Wants=pg_current_activity.timer

[Service]
Type=forking
StartLimitIntervalSec=0
ExecStart=/home/postgres/pgutils/demon/get_current_activity.sh 10.124.70.40 postgres postgres

[Install]
WantedBy=multi-user.target

pg_current_activity.timer

# /etc/systemd/system/pg_current_activity.timer
[Unit]
Description=Run pg_current_activity.sh every 1 second
Requires=pg_current_activity.service

[Timer]
Unit=pg_current_activity.service
OnCalendar=*:*:0/1
AccuracySec=1

[Install]
WantedBy=timers.target

Fi awọn ẹtọ si awọn iwe afọwọkọ:
# chmod 755 pg_current_activity.timer
# chmod 755 pg_current_activity.service

Jẹ ki a bẹrẹ iṣẹ naa:
# systemctl daemon-reload
# systemctl bẹrẹ pg_current_activity.service

Nitorinaa, itan-akọọlẹ ti awọn iwo ni a gba ni irisi awọn aworan iwoye keji-si-keji. Nitoribẹẹ, ti ohun gbogbo ba fi silẹ bi o ti jẹ, awọn tabili yoo yarayara pọ si ni iwọn ati diẹ sii tabi kere si iṣẹ iṣelọpọ yoo di eyiti ko ṣeeṣe.

O jẹ dandan lati ṣeto fifipamọ data.

3. archiving itan

Fun fifipamọ, ibi ipamọ awọn tabili ti a pin * ni a lo.

Awọn ipin tuntun ni a ṣẹda ni gbogbo wakati, lakoko ti a ti yọ data atijọ kuro ninu awọn tabili itan *, nitorinaa iwọn awọn tabili itan * ko yipada pupọ ati iyara fifi sii ko dinku ni akoko pupọ.

Ṣiṣẹda ti awọn apakan titun jẹ ṣiṣe nipasẹ iṣẹ iṣẹ plpgsql iṣẹ_hist.archive_current_activity. Algoridimu ti iṣẹ rọrun pupọ (lilo apẹẹrẹ ti apakan fun tabili pamosi_pg_stat_activity).

Ṣẹda ati ki o fọwọsi jade titun kan apakan

EXECUTE format(
'CREATE TABLE ' || partition_name || 
' PARTITION OF activity_hist.archive_pg_stat_activity FOR VALUES FROM ( %L ) TO ( %L ) ' , 
to_char(date_trunc('year', partition_min_range ),'YYYY')||'-'||
to_char(date_trunc('month', partition_min_range ),'MM')||'-'||
to_char(date_trunc('day', partition_min_range ),'DD')||' '||
to_char(date_trunc('hour', partition_min_range ),'HH24')||':00', 
to_char(date_trunc('year', partition_max_range ),'YYYY')||'-'||
to_char(date_trunc('month', partition_max_range ),'MM')||'-'||
to_char(date_trunc('day', partition_max_range ),'DD')||' '||
to_char(date_trunc('hour', partition_max_range ),'HH24')||':00'
);

INSERT INTO activity_hist.archive_pg_stat_activity
(
	SELECT 	* 
	FROM 	activity_hist.history_pg_stat_activity
	WHERE 	timepoint BETWEEN partition_min_range AND partition_max_range 		
);

Ṣiṣẹda awọn atọka

EXECUTE format	(
'CREATE INDEX '||index_name||
' ON '||partition_name||' ( wait_event_type , backend_type , timepoint )' 
);

EXECUTE format	('CREATE INDEX '||index_name||
' ON '||partition_name||' ( wait_event_type , backend_type , timepoint , queryid )' 
);

Yiyọ data atijọ kuro lati itan_pg_stat_activity tabili

DELETE 
FROM 	activity_hist.history_pg_stat_activity
WHERE 	timepoint < partition_max_range;

Nitoribẹẹ, lati igba de igba, awọn apakan atijọ ti paarẹ bi ko ṣe pataki.

Awọn iroyin ipilẹ

Na nugbo tọn, naegbọn ehe do to yinyin wiwà? Lati gba awọn ijabọ aiduro pupọ ti Oracle's AWR.

O ṣe pataki lati ṣafikun pe lati le gba awọn ijabọ, o nilo lati kọ asopọ laarin pg_stat_activity ati awọn iwo pg_stat_statements. Awọn tabili naa jẹ asopọ nipasẹ fifi iwe 'queryid' kun si awọn tabili 'history_pg_stat_activity', 'archive_pg_stat_activity'. Ọna ti fifi iye iwe kun kọja ipari ti nkan yii ati pe a ṣe apejuwe rẹ nibi - pg_stat_statements + pg_stat_activity + loq_query = pg_ash? .

Lapapọ Sipiyu TIME FUN ibeere

Ibere:

WITH hist AS
(
SELECT 
	aa.query ,aa.queryid ,			
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.archive_pg_stat_activity aa
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 backend_type = 'client backend' AND datname != 'postgres' AND	( aa.wait_event_type IS NULL  ) ANDaa.state = 'active'
GROUP BY aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid		
UNION 
SELECT 
	ha.query ,ha.queryid,
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
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 	backend_type = 'client backend' AND datname != 'postgres' AND ( ha.wait_event_type IS NULL  )AND ha.state = 'active'
GROUP BY ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid		
)
SELECT 	query , queryid , SUM( duration ) as duration 
FROM hist
GROUP BY  query , queryid 
ORDER BY 3 DESC

Apeere:

-------------------------------------------------------------------
| TOTAL CPU TIME FOR QUERIES : 07:47:36
+----+----------------------------------------+--------------------
|   #|                                 queryid|            duration
+----+----------------------------------------+--------------------
|   1|                      389015618226997618|            04:28:58
|   2|                                        |            01:07:29
|   3|                     1237430309438971376|            00:59:38
|   4|                     4710212362688288619|            00:50:48
|   5|                       28942442626229688|            00:15:50
|   6|                     9150846928388977274|            00:04:46
|   7|                    -6572922443698419129|            00:00:06
|   8|                                        |            00:00:01
+----+----------------------------------------+--------------------

Lapapọ Akoko Iduro fun awọn ibeere

Ibere:

WITH hist AS
(
SELECT 
	aa.query ,aa.queryid ,			
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.archive_pg_stat_activity aa
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 
	backend_type = 'client backend' AND datname != 'postgres' AND
	( aa.wait_event_type IS NOT NULL  ) 
GROUP BY aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid		
UNION 
SELECT 
	ha.query ,ha.queryid,
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
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 
	backend_type = 'client backend' AND datname != 'postgres' AND				
	( ha.wait_event_type IS NOT NULL  )
GROUP BY ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid		
)
SELECT 	query , queryid , SUM( duration ) as duration 
FROM hist
GROUP BY  query , queryid 
ORDER BY 3 DESC

Apẹẹrẹ:

-------------------------------------------------------------------
| TOTAL WAITINGS TIME FOR QUERIES : 21:55:04
+----+----------------------------------------+--------------------
|   #|                                 queryid|            duration
+----+----------------------------------------+--------------------
|   1|                      389015618226997618|            16:19:05
|   2|                                        |            03:47:04
|   3|                     8085340880788646241|            00:40:20
|   4|                     4710212362688288619|            00:13:35
|   5|                     9150846928388977274|            00:12:25
|   6|                       28942442626229688|            00:11:32
|   7|                     1237430309438971376|            00:09:45
|   8|                     2649515222348904837|            00:09:37
|   9|                                        |            00:03:45
|  10|                     3167065002719415275|            00:02:20
|  11|                     5731212217001535134|            00:02:13
|  12|                     8304755792398128062|            00:01:31
|  13|                     2649515222348904837|            00:00:59
|  14|                     2649515222348904837|            00:00:22
|  15|                                        |            00:00:12
|  16|                     3422818749220588372|            00:00:08
|  17|                    -5730801771815999400|            00:00:03
|  18|                    -1473395109729441239|            00:00:02
|  19|                     2404820632950544954|            00:00:02
|  20|                    -6572922443698419129|            00:00:02
|  21|                     2369289265278398647|            00:00:01
|  22|                      180077086776069052|            00:00:01
+----+----------------------------------------+--------------------

Nduro fun awọn ibeere

Awọn ibeere:

WITH hist AS
(
SELECT 
	aa.wait_event_type , aa.wait_event 
FROM 	activity_hist.archive_pg_stat_activity aa
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 
	backend_type = 'client backend' AND datname != 'postgres' AND
	aa.wait_event IS NOT NULL 
GROUP BY aa.wait_event_type , aa.wait_event
UNION 
SELECT 
	ha.wait_event_type , ha.wait_event 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
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 
	backend_type = 'client backend' AND datname != 'postgres' AND
	ha.wait_event IS NOT NULL 
GROUP BY ha.wait_event_type , ha.wait_event		
)
SELECT 	wait_event_type , wait_event 
FROM hist
GROUP BY wait_event_type , wait_event
ORDER BY 1 ASC,2 ASC

----------------------------------------------------------------------

WITH hist AS
(
SELECT 
	aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid ,			
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.archive_pg_stat_activity aa
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 
	backend_type = 'client backend' AND datname != 'postgres' AND
	( aa.wait_event_type = waitings_stat_rec.wait_event_type AND aa.wait_event = waitings_stat_rec.wait_event )
GROUP BY aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid		
UNION 
SELECT 
	ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid,
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
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 
	backend_type = 'client backend' AND datname != 'postgres' AND				
	( ha.wait_event_type = waitings_stat_rec.wait_event_type AND ha.wait_event = waitings_stat_rec.wait_event )
GROUP BY ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid		
)
SELECT 	query , queryid , SUM( duration ) as duration 
FROM hist
GROUP BY  query , queryid 
ORDER BY 3 DESC

Apeere:

------------------------------------------------
| WAITINGS FOR QUERIES
+-----------------------------------------------
|                      wait_event_type = Client|
|                       wait_event = ClientRead|
|                        Total time  = 00:46:56|
------------------------------------------------
|    #|             queryid|            duration
+-----+--------------------+--------------------
|    1| 8085340880788646241|            00:40:20
|    2|                    |            00:03:45
|    3| 5731212217001535134|            00:01:53
|    4|                    |            00:00:12
|    5| 9150846928388977274|            00:00:09
|    6| 3422818749220588372|            00:00:08
|    7| 1237430309438971376|            00:00:06
|    8|   28942442626229688|            00:00:05
|    9| 4710212362688288619|            00:00:05
|   10|-5730801771815999400|            00:00:03
|   11| 8304755792398128062|            00:00:02
|   12|-6572922443698419129|            00:00:02
|   13|-1473395109729441239|            00:00:02
|   14| 2404820632950544954|            00:00:02
|   15|  180077086776069052|            00:00:01
|   16| 2369289265278398647|            00:00:01

+-----------------------------------------------
|                          wait_event_type = IO|
|                      wait_event = BufFileRead|
|                        Total time  = 00:00:38|
------------------------------------------------
|    #|             queryid|            duration
+-----+--------------------+--------------------
|    1|   28942442626229688|            00:00:38

+-----------------------------------------------

Titiipa awọn ilana ITAN

Ibere:

SELECT 
MIN(date_trunc('second',timepoint)) AS started , 
	count(*) * interval '1 second' as duration ,
	pid , blocking_pids , relation , mode , locktype 	 
FROM 
	activity_hist.archive_locking al 
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 
	locktype = 'relation' 
GROUP BY pid , blocking_pids , relation , mode , locktype			
UNION
SELECT 
	MIN(date_trunc('second',timepoint)) AS started , 
	count(*) * interval '1 second' as duration ,
	pid , blocking_pids , relation , mode , locktype
FROM 
	activity_hist.history_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 
	locktype = 'relation' 
GROUP BY pid , blocking_pids , relation , mode , locktype			
ORDER BY 1

Apeere:

------------------------------------------------- ------------------------------------------------- --------------------------------- | ITAN awọn ilana titiipa +——————————————————————————————————————————————————————————————– ------------------------------------ +------------------ | #| pid | bere| iye akoko| blocking_pids| ìbáṣepọ| mode| locktype +------------------------------------- ----------------------------------------- ------------- | 1| 26224| 2019-09-02 19:32:16| 00:01:45| {26211}| 16541| AccessShareLock| ìbáṣepọ | 2| 26390| 2019-09-02 19:34:03| 00:00:53| {26211}| 16541| AccessShareLock| ìbáṣepọ | 3| 26391| 2019-09-02 19:34:03| 00:00:53| {26211}| 16541| AccessShareLock| ìbáṣepọ | 4| 26531| 2019-09-02 19:35:27| 00:00:12| {26211}| 16541| AccessShareLock| ìbáṣepọ | 5| 27284| 2019-09-02 19:44:02| 00:00:19| {27276}| 16541| AccessShareLock| ìbáṣepọ | 6| 27283| 2019-09-02 19:44:02| 00:00:19| {27276}| 16541| AccessShareLock| ìbáṣepọ | 7| 27286| 2019-09-02 19:44:02| 00:00:19| {27276}| 16541| AccessShareLock| ìbáṣepọ | 8| 27423| 2019-09-02 19:45:24| 00:00:12| {27394}| 16541| AccessShareLock| ìbáṣepọ | 9| 27648| 2019-09-02 19:48:06| 00:00:20| {27647}| 16541| AccessShareLock| ìbáṣepọ | 10| 27650| 2019-09-02 19:48:06| 00:00:20| {27647}| 16541| AccessShareLock| ìbáṣepọ | 11| 27735| 2019-09-02 19:49:08| 00:00:06| {27650}| 16541| AccessExclusiveLock| ìbáṣepọ | 12| 28380| 2019-09-02 19:56:03| 00:01:56| {28379}| 16541| AccessShareLock| ìbáṣepọ | 13| 28379| 2019-09-02 19:56:03| 00:00:01| 28377| 16541| AccessExclusiveLock| ìbáṣepọ | | | | | 28376| |

ITAN awọn ilana didi

Awọn ibeere:

SELECT 
blocking_pids 
FROM 
	activity_hist.archive_locking al 
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 
	locktype = 'relation' 
GROUP BY blocking_pids 		
UNION
SELECT 
	blocking_pids 
FROM 
	activity_hist.history_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 
	locktype = 'relation' 
GROUP BY blocking_pids 		
ORDER BY 1

---------------------------------------------------------------

SELECT 
	pid , usename , application_name , datname ,
	MIN(date_trunc('second',timepoint)) as started , 
	count(*) * interval '1 second' as duration ,		 
	state , 
	query
				FROM  	activity_hist.archive_pg_stat_activity
				WHERE 	pid= current_pid AND 
						timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') 						 
				GROUP BY pid , usename , application_name , 
						datname , 
						state_change, 
						state , 
						query 
				UNION
				SELECT 
					pid , usename , application_name , datname ,
					MIN(date_trunc('second',timepoint)) as started , 
					count(*) * interval '1 second' as duration ,		 
					state , 
					query
				FROM  	activity_hist.history_pg_stat_activity_for_reports
				WHERE 	pid= current_pid AND 
						timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') 						 
				GROUP BY pid , usename , application_name , 
						datname , 
						state_change, 
						state , 
						query 
				ORDER BY 5 , 1

Apeere:

------------------------------------------------- ------------------------------------------------- ------------------------------------------------- --------------------------------- ITAN awọn ilana didi +----+----------- ---------------------- ----------------------------- ------------------------------------------------- | #| pid | orukọ olumulo| app_name| datname| bere| iye akoko| ipinle| ibeere +-------------------------------- -------------------- ------------------------------------------------- ----------------- | 1| 26211| tuser| psql| tdb1| 2019-09-02 19:31:54| 00:00:04| laišišẹ| | 2| 26211| tuser| psql| tdb1| 2019-09-02 19:31:58| 00:00:06| laišišẹ ni idunadura| berè; | 3| 26211| tuser| psql| tdb1| 2019-09-02 19:32:16| 00:01:45| laišišẹ ni idunadura| tabili titiipa wafer_data; | 4| 26211| tuser| psql| tdb1| 2019-09-02 19:35:54| 00:01:23| laišišẹ| dá; | 5| 26211| tuser| psql| tdb1| 2019-09-02 19:38:46| 00:00:02| laišišẹ ni idunadura| berè; | 6| 26211| tuser| psql| tdb1| 2019-09-02 19:38:54| 00:00:08| laišišẹ ni idunadura| tabili titiipa wafer_data; | 7| 26211| tuser| psql| tdb1| 2019-09-02 19:39:08| 00:42:42| laišišẹ| dá; | 8| 26211| tuser| psql| tdb1| 2019-09-03 07:12:07| 00:00:52| lọwọ| yan test_del ();

Idagbasoke.

Awọn ibeere ipilẹ ti o han ati awọn ijabọ abajade tẹlẹ jẹ ki igbesi aye rọrun pupọ nigbati o ṣe itupalẹ awọn iṣẹlẹ iṣẹ.
Da lori awọn ibeere ipilẹ, o le gba ijabọ kan ti o jọra AWR Oracle.
Apeere Iroyin Lakotan

------------------------------------------------ ---------------------------------- | Ijabọ Iṣọkan fun Iṣe ati awọn idaduro.

A tun ma a se ni ojo iwaju. Nigbamii ni ila ni ṣiṣẹda itan titiipa (pg_stat_locks), apejuwe alaye diẹ sii ti ilana ti awọn tabili kikun.

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