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Umzamo wokudala i-analogue ye-ASH ye-PostgreSQL

Ukwakheka kwenkinga

Ukuthuthukisa imibuzo ye-PostgreSQL, ikhono lokuhlaziya umlando womsebenzi, ikakhulukazi, ukulinda, ukukhiya, nezibalo zetafula, lidingeka kakhulu.

Amathuba atholakalayo

Ithuluzi Lokuhlaziya Umthwalo Womsebenzi Womlando noma "i-AWR yama-Postgres": isixazululo esithakazelisa kakhulu, kepha awukho umlando we-pg_stat_activity kanye ne-pg_locks.

pgsentinel extension :
«Lonke ulwazi oluqoqiwe lugcinwa kuphela ku-RAM, futhi inani lememori elisetshenzisiwe lilawulwa inani lamarekhodi agciniwe agciniwe.

Inkambu ye-queryid yengeziwe - umbuzo ofanayo osuka kusandiso se-pg_stat_statements (ukufakwa ngaphambilini kuyadingeka).«

Lokhu, kungasiza kakhulu, kodwa into enzima kakhulu yiphuzu lokuqala. ”Lonke ulwazi oluqoqiwe lugcinwa kuphela ku-RAM ”, i.e. kunomthelela esisekelweni esiqondiwe. Ngaphezu kwalokho, awukho umlando wokukhiya kanye nezibalo zetafula. Labo. Isixazululo ngokuvamile sikhuluma ngokungaphelele: “Alikho iphakheji eselilungele ukufakwa okwamanje. Kunconywa ukulanda imithombo futhi uzihlanganisele umtapo wolwazi. Okokuqala udinga ukufaka iphakheji ye-"devel" yeseva yakho bese usetha indlela eya ku-pg_config ku-PATH variable.".

Ngokuvamile, kuningi ukuphikisana, futhi esimweni solwazi olubucayi lokukhiqiza, kungase kungenzeki noma yini ngeseva. Kudingeka siqhamuke nokuthile okwethu futhi.

Isexwayiso

Ngenxa yevolumu enkulu futhi ngenxa yesikhathi sokuhlola esingaphelele, i-athikili ngokuyinhloko ingeyolwazi, kunalokho njengesethi yemibono kanye nemiphumela emaphakathi.
Impahla enemininingwane eminingi izolungiswa kamuva, izingxenye

Izidingo ezisalungiswa zesixazululo

Kuyadingeka ukwenza ithuluzi elikuvumela ukuthi ugcine:

pg_stat_activity umlando wokubuka
Umlando wokukhiya isikhathi usebenzisa ukubuka kwe-pg_locks

Isidingo sesixazululo-nciphisa umthelela kusizindalwazi esiqondiwe.

Umbono ojwayelekile- i-ejenti yokuqoqa idatha yethulwa hhayi kusizindalwazi esiqondiwe, kodwa kusizindalwazi sokuqapha njengesevisi yesistimu. Yebo, okunye ukulahleka kwedatha kungenzeka, kodwa lokhu akubalulekile ekubikeni, kodwa awukho umthelela ku-database eqondisiwe mayelana nememori nesikhala sediski. Futhi esimweni sokusebenzisa ichibi lokuxhuma, umthelela ezinqubweni zabasebenzisi mncane.

Izigaba zokuqalisa

1.Amathebula ezinsiza

I-schema ehlukile isetshenziselwa ukugcina amatafula, ukuze kungabi nzima ukuhlaziya amatafula amakhulu asetshenzisiwe.

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

Okubalulekile: I-schema asidalwanga kusizindalwazi esiqondiwe, kodwa kusizindalwazi sokuqapha.

pg_stat_activity umlando wokubuka

Ithebula lisetshenziselwa ukugcina izifinyezo zamanje zokubuka kwe-pg_stat_activity

activity_hist.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
);

Ukusheshisa ukufakwa - azikho izinkomba noma imikhawulo.

Ukugcina umlando ngokwawo, kusetshenziswa ithebula elihlukanisiwe:

umsebenzi_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);

Njengoba kulesi simo azikho izidingo zejubane lokufaka, ezinye izinkomba zidalwe ukusheshisa ukwakhiwa kwemibiko.

Umlando wokuvinjwa kweseshini

Ithebula lisetshenziselwa ukugcina izifinyezo zamanje zokukhiya isikhathi:

umsebenzi_hist.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
);

Futhi, ukusheshisa ukufakwa, azikho izinkomba noma imikhawulo.

Ukugcina umlando ngokwawo, kusetshenziswa ithebula elihlukanisiwe:

umsebenzi_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);

Njengoba kulesi simo azikho izidingo zejubane lokufaka, ezinye izinkomba zidalwe ukusheshisa ukwakhiwa kwemibiko.

2.Ukugcwalisa umlando wamanje

Ukuqoqa ngokuqondile izifinyezo zokubuka, kusetshenziswa iskripthi se-bash esisebenzisa umsebenzi we-plpgsql.

get_current_activity.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

plgql Umsebenzi we-dblink ufinyelela ukubukwa kusizindalwazi esiqondiwe bese ufaka imigqa kumathebula esevisi kusizindalwazi sokuqapha.

get_current_activity.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;

Ukuze uqoqe izifinyezo zokubuka, isevisi ye-systemd nemibhalo emibili isetshenziswa:

pg_current_activity.service

# /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

Nikeza amalungelo kumaskripthi:
# chmod 755 pg_current_activity.timer
# chmod 755 pg_current_activity.service

Asiqale isevisi:
# systemctl daemon-kabusha kabusha
# systemctl qala pg_current_activity.service

Ngakho-ke, umlando wemibono uqoqwa ngendlela yezifinyezo zesibili ngesekhondi. Yiqiniso, uma yonke into ishiywe njengoba injalo, amatafula azokhula ngokushesha ngosayizi futhi umsebenzi okhiqizayo kakhulu ngeke usakwazi.

Kuyadingeka ukuhlela ukugcinwa kwedatha.

3. Ukugcina umlando

Ukufaka kungobo yomlando, kusetshenziswa ingobo yomlando yamathebula ahlukanisiwe.

Izingxenye ezintsha ziyakhiwa njalo ngehora, kuyilapho idatha endala ikhishwa kumathebula omlando*, ngakho usayizi wamathebula omlando* awushintshi kakhulu futhi isivinini sokufaka asohlisi ngokuhamba kwesikhathi.

Ukwakhiwa kwezigaba ezintsha kwenziwa umsebenzi we-plpgsql umsebenzi_hist.archive_current_activity. I-algorithm yomsebenzi ilula kakhulu (usebenzisa isibonelo sesigaba sethebula le-archive_pg_stat_activity).

Dala futhi ugcwalise isigaba esisha

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 		
);

Ukudala izinkomba

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 )' 
);

Ukukhipha idatha endala kuthebula le-history_pg_stat_activity

DELETE 
FROM 	activity_hist.history_pg_stat_activity
WHERE 	timepoint < partition_max_range;

Yiqiniso, ngezikhathi ezithile, izigaba ezindala ziyasuswa njengokungadingeki.

Imibiko eyisisekelo

Empeleni, kungani kwenziwa konke lokhu? Ukuze uthole imibiko ekhumbuza ngokungacacile kahle kwe-Oracle's AWR.

Kubalulekile ukungeza ukuthi ukuze uthole imibiko, udinga ukwakha ukuxhumana phakathi kwe-pg_stat_activity kanye nokubukwa kwe-pg_stat_statements. Amathebula axhunywe ngokwengeza ikholomu 'queryid' kumathebula okuthi 'history_pg_stat_activity', 'archive_pg_stat_activity'. Indlela yokwengeza inani lekholomu ingaphezu kobubanzi balesi sihloko futhi ichazwe lapha − pg_stat_statements + pg_stat_activity + loq_query = pg_ash? .

ISONKE ISIKHATHI SE-CPU SEMIBUZO

Isicelo :

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

Isibonelo:

-------------------------------------------------------------------
| 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
+----+----------------------------------------+--------------------

ISIKHATHI SESIYONKE SOKULINDA SEMIBUZO

Isicelo :

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

Isibonelo:

-------------------------------------------------------------------
| 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
+----+----------------------------------------+--------------------

KULINDE IMIBUZO

Izicelo:

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

Isibonelo:

------------------------------------------------
| 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

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

UMLANDO WEZINQUBO EZIVALIWE

Isicelo:

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

Isibonelo:

------------------------------------------------- ------------------------------------------------- --------------------------------- | UMLANDO WEZINQUBO EZIVALIWE +-----+---------------------------------------- --------+-------------------+----- ---------------- +------------------- | #| pid| iqalile| ubude besikhathi| blocking_pids| ubudlelwano| imodi| uhlobo lokukhiya +----------+---------------------------- +--------- -----------+------------------- -------------------- --------------- | 1| 26224 | 2019-09-02 19:32:16| 00:01:45 | {26211}| 16541 | AccessShareLock| ubudlelwano | 2| 26390 | 2019-09-02 19:34:03| 00:00:53 | {26211}| 16541 | AccessShareLock| ubudlelwano | 3| 26391 | 2019-09-02 19:34:03| 00:00:53 | {26211}| 16541 | AccessShareLock| ubudlelwano | 4| 26531 | 2019-09-02 19:35:27| 00:00:12 | {26211}| 16541 | AccessShareLock| ubudlelwano | 5| 27284 | 2019-09-02 19:44:02| 00:00:19 | {27276}| 16541 | AccessShareLock| ubudlelwano | 6 | 27283 | 2019-09-02 19:44:02| 00:00:19 | {27276}| 16541 | AccessShareLock| ubudlelwano | 7| 27286 | 2019-09-02 19:44:02| 00:00:19 | {27276}| 16541 | AccessShareLock| ubudlelwano | 8| 27423 | 2019-09-02 19:45:24| 00:00:12 | {27394}| 16541 | AccessShareLock| ubudlelwano | 9 | 27648| 2019-09-02 19:48:06| 00:00:20 | {27647}| 16541 | AccessShareLock| ubudlelwano | 10| 27650 | 2019-09-02 19:48:06| 00:00:20 | {27647}| 16541 | AccessShareLock| ubudlelwano | 11| 27735 | 2019-09-02 19:49:08| 00:00:06 | {27650}| 16541 | AccessExclusiveLock| ubudlelwano | 12| 28380 | 2019-09-02 19:56:03| 00:01:56 | {28379}| 16541 | AccessShareLock| ubudlelwano | 13| 28379 | 2019-09-02 19:56:03| 00:00:01 | 28377 | 16541 | AccessExclusiveLock| ubudlelwano | | | | | 28376 | |

UKUVIMBA UMLANDO WEZINQUBO

Izicelo:

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

Isibonelo:

------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ----------------------- UKUVIMBA UMLANDO WEZINQUBO +----+----------+------- -------------------------------------------------- -------------------------------------------------- ---------+------------------------------------ --- | #| pid| igama lomsebenzisi| isicelo_igama| igama | iqalile| ubude besikhathi| izwe| umbuzo +----------+---------+---------+-----+ --------- -+----------------------------------------------- ------------------------------------------ ------- ------------------ | 1| 26211| ithuna| psql| tdb1| 2019-09-02 19:31:54| 00:00:04 | dlala | | 2| 26211| ithuna| psql| tdb1| 2019-09-02 19:31:58| 00:00:06 | ingenzi lutho ekuthengiseni| qala; | 3| 26211| ithuna| psql| tdb1| 2019-09-02 19:32:16| 00:01:45 | ingenzi lutho ekuthengiseni| khiya idatha ye-wafer_data; | 4| 26211| ithuna| psql| tdb1| 2019-09-02 19:35:54| 00:01:23 | dlala | bophezela; | 5| 26211| ithuna| psql| tdb1| 2019-09-02 19:38:46| 00:00:02 | ingenzi lutho ekuthengiseni| qala; | 6 | 26211| ithuna| psql| tdb1| 2019-09-02 19:38:54| 00:00:08 | ingenzi lutho ekuthengiseni| khiya idatha ye-wafer_data; | 7| 26211| ithuna| psql| tdb1| 2019-09-02 19:39:08| 00:42:42 | dlala | bophezela; | 8| 26211| ithuna| psql| tdb1| 2019-09-03 07:12:07| 00:00:52 | iyasebenza| khetha test_del();

Intuthuko.

Imibuzo eyisisekelo ebonisiwe kanye nemibiko ewumphumela kakade yenza ukuphila kube lula kakhulu lapho kuhlaziywa izigameko zokusebenza.
Ngokusekelwe emibuzweni eyisisekelo, ungathola umbiko ofana ngokungaqondakali ne-Oracle's AWR.
Isifinyezo sombiko isibonelo

+------------------------------------------------ ----------------------------------- | UMBIKO OHLANGANISIWE WOMSEBENZI NOKULINDA.

Kuzoqhutshwa. Okulandelayo emgqeni ukwakhiwa komlando wokukhiya (pg_stat_locks), incazelo enemininingwane yenqubo yokugcwalisa amathebula.

Source: www.habr.com

Engeza amazwana