ProHoster > Блог > Maamulka > Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta

Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta

Injineer - oo laga tarjumay Laatiinka - waxyooday.
Injineerku wax walba wuu qaban karaa. (c) R. Diesel.
Epigraphs.
Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta
Ama sheeko ku saabsan sababta maamulaha keydka xogta uu ugu baahan yahay inuu xasuusto barnaamijkiisii ​​hore.

Horudhac

Dhammaan magacyada waa la beddelay. Shilalka waa random. Maaddadu waxay ka dhigan tahay oo keliya ra'yiga shakhsi ahaaneed ee qoraaga.

Afeef damaanad: Maqaallada taxanaha ah ee qorshaysan kuma jiri doonaan sharraxaad faahfaahsan oo sax ah oo ku saabsan jaantusyada iyo qoraallada la isticmaalay. Alaabta lama isticmaali karo isla markiiba "SIDA IS".
Marka hore, sababtoo ah mugga weyn ee walxaha
Marka labaad, sababtoo ah xiriirka dhow ee saldhigga wax soo saarka ee macaamiisha dhabta ah.
Sidaa darteed, maqaaladu waxay ka koobnaan doonaan kaliya fikrado iyo sharraxaadyo qaabka ugu guud ah.
Waxaa laga yaabaa in mustaqbalka nidaamku kori doono ilaa heerka lagu dhejiyo GitHub, ama laga yaabee in aan la yeelin. Waqtiga ayaa muujin doona.

Bilowgii sheekada -"Ma xasuusataa sida ay wax u dhaceen".
Maxaa dhacay natiijada, marka loo eego ereyada guud - "Synthesis sida mid ka mid ah hababka lagu hagaajinayo waxqabadka PostgreSQL»

Maxaan waxan oo dhan ugu baahanahay?

Waa hagaag, marka hore, si aan loo iloobin, xusuusta maalmaha sharafta leh ee hawlgabka.
Marka labaad, in la habeeyo waxa la qoray. Sababtoo ah mararka qaarkood waxaan bilaabaa inaan jahwareero oo aan iloobo qaybo gaar ah.

Hagaag, iyo waxa ugu muhiimsan ayaa ah in laga yaabo inay u anfacdo qof oo ka caawiso inay ka fogaadaan inay dib u abuuraan giraangiraha oo aanay soo qaadin rake. Si kale haddii loo dhigo, hagaaji karmadaada (ma aha Khabrov's). Sababtoo ah waxa ugu qiimaha badan aduunkan waa fikrado. Waxa ugu weyn waa in la helo fikrad. Laakin in fikradda loo rogo xaqiiqo waa su'aal farsamo oo keliya.

Haddaba, aan bilowno, waxyar-yar...

Samaynta dhibaatada.

La heli karo:

Xogta PostgreSQL(10.5), nooca culeyska isku dhafan (OLTP+DSS), culeys dhexdhexaad ah, oo ku yaal daruuraha AWS.
Ma jiro dabagal xogeed; la socodka kaabayaasha waxa lagu bixiyaa qaab agabka caadiga ah ee AWS ee qaabaynta ugu yar.

Loo baahan yahay:

La soco waxqabadka iyo heerka xogta xogta, hel oo hay macluumaadka bilowga ah si aad u wanaajiso weydiimaha xogta culus.

Hordhac kooban ama falanqayn ku saabsan fursadaha xal

Ugu horrayn aynu isku dayno in aynu falanqeyno fursadaha lagu xallin karo mushkiladda iyada oo la eegayo falanqayn is barbar dhig ah oo lagu samaynayo faa’iidada iyo khasaaraha uu leeyahay injineerku, ciddii xaqa u lahaydna iyada oo la raacayo jadwalka shaqaaluhu ha la macaamilo faa’iidada iyo faa’iidada iyo khasaaraha uu leeyahay. khasaaraha maamulka.

Doorashada 1 - "Ka shaqaynta baahida"

Wax walba sidiisa ayaan uga tagnaa. Haddii macmiilku aanu ku qanacsanayn wax ku jira shaqada, waxqabadka xogta ama codsiga, wuxuu ogeysiin doonaa injineerada DBA e-mayl ama abuurista dhacdo ku jirta saxanka tigidhada.
Injineerku, markii uu helay ogeysiiska, wuxuu fahmi doonaa dhibaatada, wuxuu bixin doonaa xal ama wuxuu saari doonaa dhibaatada dhabarka dambe, isagoo rajeynaya in wax walba ay is xalin doonaan, si kastaba ha ahaatee, wax walba ayaa dhawaan la ilaawi doonaa.
Rooti sinjibiil iyo donuts, nabarro iyo kuuskuusGingerbread iyo donuts:
1. Looma baahna in la sameeyo wax dheeraad ah.
2. Mar walba waxaa jirta fursad lagu cudur daaro oo la isku qaldo.
3. Waqti badan oo aad ku bixin karto go'aankaaga.
Nabarrada iyo nabarrada:
1. Mar dhow ama ha dheeraato, macmiilku wuxuu ka fikiri doonaa nuxurka jiritaanka iyo caddaaladda caalamiga ah ee adduunkan wuxuuna mar kale is-weydiinayaa su'aasha - maxaan lacagteyda u siinayaa? Natiijadu had iyo jeer waa isku mid - su'aasha kaliya ayaa ah marka macmiilku caajiso oo uu gacan haadin doono. Qudiyuhuna wuu madhnaan doonaa. Waa murugo.
2. Horumarinta Injineer - eber.
3. Dhibaatooyinka qorsheynta shaqada iyo rarista

Xulashada 2- "Ku ciyaarista daf, uumi iyo xidhashada kabaha"

Faqrada 1aadWaa maxay sababta aan ugu baahanahay nidaamka la socodka, waxaan heli doonaa wax kasta oo codsiyo. Waxaan wadnaa farabadan oo ah noocyada kala duwan ee weydiimaha qaamuuska xogta iyo aragtida firfircoon, shid dhamaan noocyada xisaabaadka, wax walba gelino miisaska, oo aan si xilliyo ah u falanqeyno liisaska iyo miisaska. Natiijo ahaan, waxaan haynaa garaafyo, miisas, warbixinno qurux badan ama aan qurux badnayn. Waxa ugu muhiimsan waa in la helo wax badan, ka badan.
Faqrada 2aad-Waxaan abuurnaa dhaqdhaqaaq waxaanan bilownaa falanqaynta waxaas oo dhan.
Faqrada 3aadWaxaan diyaarineynaa dukumeenti gaar ah, waxaan ugu yeernaa dukumeentigan si fudud - "sidee ayaan u sameynaa xog ururin."
Faqrada 4aad-Macaamiishu, markuu arkay dhammaan quruxdan garaafyada iyo tirooyinka, waxay ku jiraan kalsooni caruurnimo, kalsooni - hadda wax walba way noo shaqayn doonaan, dhawaan. Iyo, si fudud oo aan xanuun lahayn ayuu u qaybiyaa agabkiisa dhaqaale. Maamulka ayaa sidoo kale kalsooni ku qaba in injineeradayadu ay si weyn u shaqeeyaan. Soo dejinta ugu badnaan
Faqrada 5aad-Ku celi talaabada 1 si joogto ah.
Rooti sinjibiil iyo donuts, nabarro iyo kuuskuusGingerbread iyo donuts:
1. Nolosha maamulayaasha iyo injineerada waa mid sahlan, la saadaalin karo oo ay ka buuxaan waxqabad. Wax walba waa guuxayaan, qof walba waa mashquul.
2. Nolosha macmiilku sidoo kale ma xuma - had iyo jeer waxa uu hubaa in uu u baahan yahay in uu wax yar u dulqaato wax walbana way shaqayn doonaan. Ma fiicnaanayso, si fiican, dunidu waa cadaalad darro, nolosha xigta waxaad noqon doontaa nasiib.
Nabarrada iyo nabarrada:
1. Goor dhow ama dambe, waxaa jiri doona bixiye degdeg ah oo adeeg la mid ah kaas oo samayn doona wax la mid ah, laakiin wax yar ka jaban. Oo haddii natiijadu ay isku mid tahay, maxaad wax badan u bixinaysaa. Taas oo mar kale horseedi doonta in la waayo quudiyaha.
2. Waa caajis. Sidee loo caajisaa hawl kasta oo aan macno lahayn.
3. Sida nuqulkii hore, horumar ma jiro. Laakiin injineerka, dhinaca hoose ayaa ah, ka duwan doorashada koowaad, waxaad u baahan tahay inaad si joogto ah u abuurto IBD. Waxayna tani waqti qaadanaysaa. Kaas oo aad ku bixin karto danta qofka aad jeceshahay. Sababtoo ah adigu ma daryeeli kartid naftaada, ninna kuma siinayo adiga kugu saabsan.

Xulashada 3- Uma baahnid inaad hindisaha baaskiilka, kaliya waxaad u baahan tahay inaad iibsato oo aad raacdo.

Waxba maaha in injineerada shirkadaha kale ay cunaan pizza leh biirka (oh, maalmaha sharafta St. Petersburg ee 90-meeyadii). Aynu isticmaalno hababka la socodka ee la sameeyay, la saxay oo shaqaynaya, iyo guud ahaan faa'iidada hadalka ah (si fiican, ugu yaraan hal-abuurayaashooda).
Rooti sinjibiil iyo donuts, nabarro iyo kuuskuusGingerbread iyo donuts:
1. Looma baahna in wakhti lagu lumiyo la imaatinka wax hore loo allifay. Qaado oo isticmaal.
2. Nidaamyada la socodka maaha kuwo ay qoraan nacasyadu, dabcan, waa kuwo faa'iido leh.
3. Nidaamyada la socodka shaqadu waxay inta badan bixiyaan xog faa'iido leh.
Nabarrada iyo nabarrada:
1. Injineer kiiskan maaha injineer, laakiin waa isticmaale alaab qof kale leeyahay. Ama isticmaale.
2. Waa in macmiilku ku qanco in uu u baahan yahay in uu wax gato, si guud ahaan loo sheego, aanu doonayn in uu fahmo, oo aan la rabin, guud ahaanna miisaaniyada sanadka la ansixiyey oo aan waxba iska beddeli doonin. Markaa waxaad u baahan tahay inaad qoondayso kheyraad gaar ah oo aad u habayso nidaam gaar ah. Kuwaas. marka hore waxaad u baahan tahay inaad bixiso, bixiso oo aad mar kale bixiso. Macmiilkuna waa bakhayl. Tani waa caadada noloshan.

Maxaa la sameeyaa - Chernyshevsky? Su'aashaadu aad bay u khusaysaa. (La socda)

Xaaladdan gaarka ah iyo xaaladda hadda jirta, waxaad u samayn kartaa wax yar oo ka duwan - aynu samaysano nidaamka la socodka.
Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta
Hagaag, ma aha nidaam, dabcan, macnaha ereyga oo buuxa, taasi waa mid aad u qaylo iyo kibir leh, laakiin ugu yaraan si uun u fududee hawshaada oo ururin macluumaad dheeraad ah si aad u xalliso dhacdooyinka waxqabadka. Si aadan naftaada ugu helin xaalad - "halkaas u tag, ma aqaano meel, wax ka hel, ma aqaan waxa."

Waa maxay faa'iidooyinka iyo khasaaraha doorashadan:

Faa'iido:
1. Tani waa mid xiiso leh. Hagaag, ugu yaraan way ka xiiso badan tahay "faylka xogta oo yaraada, beddelka miiska miiska, iwm."
2. Kuwani waa xirfado cusub iyo horumar cusub. Kaas, hadhow ama hadhow, wuxuu ku siin doonaa rooti sinjibiil ah oo aad u qalanto iyo donuts.
Ogolaansho:
1. Waa inaad shaqeysaa. Ku dadaal.
2. Waa inaad si joogto ah u sharaxdaa macnaha iyo rajada laga qabo dhammaan hawlaha.
3. Wax waa in la huraa, sababtoo ah kheyraadka kaliya ee uu heli karo injineer -waqtiga - waxaa xaddidaya Caalamka.
4. Waxa ugu xun uguna xun - natiijadu waxay noqon kartaa cagajugleyn sida "Ma aha jiir, maaha rah, laakiin xayawaan aan la garanayn."

Kuwa aan khatar galin ma cabbaan champagne.
Markaa - madadaalo ayaa bilaabmaysa.

Fikrad guud - qaab ahaan

Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta
(Sawir laga soo qaatay maqaalka «Synthesis sida mid ka mid ah hababka lagu hagaajinayo waxqabadka PostgreSQL»)

Sharaxaad:

  • Kordhinta caadiga ah ee PostgreSQL "pg_stat_statements" ayaa lagu rakibay kaydka bartilmaameedka.
  • Xogta la socodka, waxaanu ku abuurnaa jaantusyo adeeg oo lagu kaydinayo taariikhda pg_stat_statements marxaladda hore iyo dejinta cabbirada iyo la socodka mustaqbalka
  • Martigeliyaha la socodka, waxaanu ku abuurnaa qoraalo bash ah, oo ay ku jiraan kuwa abuurista shilalka nidaamka tigidhada.

Miisaska adeegga

Marka hore, ERD qaabaysan oo la fududeeyay, maxaa dhacay dhammaadkii:
Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta
Sharaxaad kooban ee shaxankadhammaadka - martigeliyaha, barta xidhiidhka tusaale ahaan
database - cabbirada database
pg_stat_taariikhda - miis taariikhi ah oo loogu talagalay kaydinta sawirada ku meel gaadhka ah ee pg_stat_statements aragtida xogta bartilmaameedka
metric_qaamuus - qaamuuska cabbirrada waxqabadka
metric_config - qaabeynta cabbirrada shakhsi ahaaneed
ton - cabbir gaar ah oo loogu talagalay codsiga la kormeerayo
metric_alert_taariikhda - taariikhda digniinaha waxqabadka
log_questry - miiska adeegga ee lagu kaydinayo diiwaannada la miisaamay ee laga soo qaatay faylka log PostgreSQL ee laga soo dejiyey AWS
saldhigga - cabbirrada xilliyada loo isticmaalo saldhigga ahaan
isbaaro - qaabaynta mitirka ee hubinta heerka xogta xogta
isbaarada_hortag_taariikhda - taariikhda digniinta ee cabbirada hubinta caafimaadka xogta
pg_stat_db_questions - miiska adeegga ee codsiyada firfircoon
dhaqdhaqaaqa_log - miiska adeegga log hawlaha
dabin_oid - miiska adeegga qaabeynta dabinka

Marxaladda 1-aad - ururinta macluumaadka tirakoobka ee ku saabsan waxqabadka oo hel warbixinno

Miis ayaa loo isticmaalaa in lagu kaydiyo macluumaadka tirakoobka pg_stat_taariikhda
qaabka shaxda pg_stat_history

                                          Shaxda "public.pg_stat_history" Safka | Nooca | Wax-ka-beddelayaasha---------------- -+------------------------------------------------ id | tirada | aan waxba ka jirin nextval ('pg_stat_history_id_seq' :: regclass) snapshot_timestamp | timestamp aan waqti lahayn | database_id | tirada | dbid | oid | userid | oid | queryid | weyn | su'aal | qoraal | wacay | weyn | total_time | labanlaab sax ah | daqiiqad_waqti | labanlaab sax ah | max_time | labanlaab sax ah | celcelis_waqti | labanlaab sax ah | stddev_time | labanlaab sax ah | saf | weyn | wadaag_blks_ku dhuftay | weyn | wadaag_blks_akhriyey | weyn | wadaag_blks_wasakh | weyn | wadaag_blks_qoraal | weyn | local_blks_ku dhuftay | weyn | local_blks_akhri | weyn | local_blks_wasakh | weyn | local_blks_qoray | weyn | temp_blks_akhri | weyn | temp_blks_qoray | weyn | blk_akhris_waqti | labanlaab sax ah | blk_qor_waqtiga | labanlaab sax ah | saldhiga_id | tirada | Tusayaasha: "pg_stat_history_pkey" FURAHA PRIMARY, btree (id) "database_idx" btree (database_id) "queryid_idx" btree (queryid) "snapshot_timestamp_idx" btree (snapshot_timestamp) Ajnabi-key" FEYNTACAQADAD : "Xogta dibeda database (id ) ONASCADDE DIRIR

Sida aad arki karto, jadwalku waa kaliya xogta aragtida isugeynta pg_stat_oraahyada in database bartilmaameedka.

Isticmaalka shaxdan waa mid aad u fudud

pg_stat_taariikhda waxay matali doontaa tirokoobyo la ururiyey ee fulinta weydiinta saacad kasta. Bilowga saacad kasta, ka dib marka la buuxiyo miiska, tirakoobka pg_stat_oraahyada dib u dhig pg_stat_statements_reset().
Fiiro gaar ah: Tirakoobyada waxaa loo ururiyaa su'aalaha oo leh muddada fulinta in ka badan 1 ilbiriqsi.
Buuxinta miiska pg_stat_history

--pg_stat_history.sql
CREATE OR REPLACE FUNCTION pg_stat_history( ) RETURNS boolean AS $$
DECLARE
  endpoint_rec record ;
  database_rec record ;
  pg_stat_snapshot record ;
  current_snapshot_timestamp timestamp without time zone;
BEGIN
  current_snapshot_timestamp = date_trunc('minute',now());  
  
  FOR endpoint_rec IN SELECT * FROM endpoint 
  LOOP
    FOR database_rec IN SELECT * FROM database WHERE endpoint_id = endpoint_rec.id 
	  LOOP
	    
		RAISE NOTICE 'NEW SHAPSHOT IS CREATING';
		
		--Connect to the target DB	  
	    EXECUTE 'SELECT dblink_connect(''LINK1'',''host='||endpoint_rec.host||' dbname='||database_rec.name||' user=USER password=PASSWORD '')';
 
        RAISE NOTICE 'host % and dbname % ',endpoint_rec.host,database_rec.name;
		RAISE NOTICE 'Creating snapshot of pg_stat_statements for database %',database_rec.name;
		
		SELECT 
	      *
		INTO 
		  pg_stat_snapshot
	    FROM dblink('LINK1',
	      'SELECT 
	       dbid , SUM(calls),SUM(total_time),SUM(rows) ,SUM(shared_blks_hit) ,SUM(shared_blks_read) ,SUM(shared_blks_dirtied) ,SUM(shared_blks_written) , 
           SUM(local_blks_hit) , SUM(local_blks_read) , SUM(local_blks_dirtied) , SUM(local_blks_written) , SUM(temp_blks_read) , SUM(temp_blks_written) , SUM(blk_read_time) , SUM(blk_write_time)
	       FROM pg_stat_statements WHERE dbid=(SELECT oid from pg_database where datname=current_database() ) 
		   GROUP BY dbid
  	      '
	               )
	      AS t
	       ( dbid oid , calls bigint , 
  	         total_time double precision , 
	         rows bigint , shared_blks_hit bigint , shared_blks_read bigint ,shared_blks_dirtied bigint ,shared_blks_written	 bigint ,
             local_blks_hit	 bigint ,local_blks_read bigint , local_blks_dirtied bigint ,local_blks_written bigint ,
             temp_blks_read	 bigint ,temp_blks_written bigint ,
             blk_read_time double precision , blk_write_time double precision	  
	       );
		 
		INSERT INTO pg_stat_history
          ( 
		    snapshot_timestamp  ,database_id  ,
			dbid , calls  ,total_time ,
            rows ,shared_blks_hit  ,shared_blks_read  ,shared_blks_dirtied  ,shared_blks_written ,local_blks_hit , 	 	
            local_blks_read,local_blks_dirtied,local_blks_written,temp_blks_read,temp_blks_written, 	
            blk_read_time, blk_write_time 
		  )		  
	    VALUES
	      (
	       current_snapshot_timestamp ,
		   database_rec.id ,
	       pg_stat_snapshot.dbid ,pg_stat_snapshot.calls,
	       pg_stat_snapshot.total_time,
	       pg_stat_snapshot.rows ,pg_stat_snapshot.shared_blks_hit ,pg_stat_snapshot.shared_blks_read ,pg_stat_snapshot.shared_blks_dirtied ,pg_stat_snapshot.shared_blks_written , 
           pg_stat_snapshot.local_blks_hit , pg_stat_snapshot.local_blks_read , pg_stat_snapshot.local_blks_dirtied , pg_stat_snapshot.local_blks_written , 
	       pg_stat_snapshot.temp_blks_read , pg_stat_snapshot.temp_blks_written , pg_stat_snapshot.blk_read_time , pg_stat_snapshot.blk_write_time 	   
	      );		   
		  
        RAISE NOTICE 'Creating snapshot of pg_stat_statements for queries with min_time more than 1000ms';
	
        FOR pg_stat_snapshot IN
          --All queries with max_time greater than 1000 ms
	      SELECT 
	        *
	      FROM dblink('LINK1',
	        'SELECT 
	         dbid , userid ,queryid,query,calls,total_time,min_time ,max_time,mean_time, stddev_time ,rows ,shared_blks_hit ,
			 shared_blks_read ,shared_blks_dirtied ,shared_blks_written , 
             local_blks_hit , local_blks_read , local_blks_dirtied , 
			 local_blks_written , temp_blks_read , temp_blks_written , blk_read_time , 
			 blk_write_time
	         FROM pg_stat_statements 
			 WHERE dbid=(SELECT oid from pg_database where datname=current_database() AND min_time >= 1000 ) 
  	        '

	                  )
	        AS t
	         ( dbid oid , userid oid , queryid bigint ,query text , calls bigint , 
  	           total_time double precision ,min_time double precision	 ,max_time double precision	 , mean_time double precision	 ,  stddev_time double precision	 , 
	           rows bigint , shared_blks_hit bigint , shared_blks_read bigint ,shared_blks_dirtied bigint ,shared_blks_written	 bigint ,
               local_blks_hit	 bigint ,local_blks_read bigint , local_blks_dirtied bigint ,local_blks_written bigint ,
               temp_blks_read	 bigint ,temp_blks_written bigint ,
               blk_read_time double precision , blk_write_time double precision	  
	         )
	    LOOP
		  INSERT INTO pg_stat_history
          ( 
		    snapshot_timestamp  ,database_id  ,
			dbid ,userid  , queryid  , query  , calls  ,total_time ,min_time ,max_time ,mean_time ,stddev_time ,
            rows ,shared_blks_hit  ,shared_blks_read  ,shared_blks_dirtied  ,shared_blks_written ,local_blks_hit , 	 	
            local_blks_read,local_blks_dirtied,local_blks_written,temp_blks_read,temp_blks_written, 	
            blk_read_time, blk_write_time 
		  )		  
	      VALUES
	      (
	       current_snapshot_timestamp ,
		   database_rec.id ,
	       pg_stat_snapshot.dbid ,pg_stat_snapshot.userid ,pg_stat_snapshot.queryid,pg_stat_snapshot.query,pg_stat_snapshot.calls,
	       pg_stat_snapshot.total_time,pg_stat_snapshot.min_time ,pg_stat_snapshot.max_time,pg_stat_snapshot.mean_time, pg_stat_snapshot.stddev_time ,
	       pg_stat_snapshot.rows ,pg_stat_snapshot.shared_blks_hit ,pg_stat_snapshot.shared_blks_read ,pg_stat_snapshot.shared_blks_dirtied ,pg_stat_snapshot.shared_blks_written , 
           pg_stat_snapshot.local_blks_hit , pg_stat_snapshot.local_blks_read , pg_stat_snapshot.local_blks_dirtied , pg_stat_snapshot.local_blks_written , 
	       pg_stat_snapshot.temp_blks_read , pg_stat_snapshot.temp_blks_written , pg_stat_snapshot.blk_read_time , pg_stat_snapshot.blk_write_time 	   
	      );
		  
        END LOOP;

        PERFORM dblink_disconnect('LINK1');  
				
	  END LOOP ;--FOR database_rec IN SELECT * FROM database WHERE endpoint_id = endpoint_rec.id 
    
  END LOOP;

RETURN TRUE;  
END
$$ LANGUAGE plpgsql;

Natiijo ahaan, ka dib wakhti wakhti ka dib miiska pg_stat_taariikhda waxaanu yeelan doonaa sawiro sawiro ah oo ka kooban shaxda pg_stat_oraahyada database bartilmaameed.

Dhab ahaantii ka warbixinta

Isticmaalka su'aalaha fudud, waxaad heli kartaa warbixino faa'iido leh oo xiiso leh.

Xogta la isku daray ee wakhti go'an

Codso

SELECT 
  database_id , 
  SUM(calls) AS calls ,SUM(total_time)  AS total_time ,
  SUM(rows) AS rows , SUM(shared_blks_hit)  AS shared_blks_hit,
  SUM(shared_blks_read) AS shared_blks_read ,
  SUM(shared_blks_dirtied) AS shared_blks_dirtied,
  SUM(shared_blks_written) AS shared_blks_written , 
  SUM(local_blks_hit) AS local_blks_hit , 
  SUM(local_blks_read) AS local_blks_read , 
  SUM(local_blks_dirtied) AS local_blks_dirtied , 
  SUM(local_blks_written)  AS local_blks_written,
  SUM(temp_blks_read) AS temp_blks_read, 
  SUM(temp_blks_written) temp_blks_written , 
  SUM(blk_read_time) AS blk_read_time , 
  SUM(blk_write_time) AS blk_write_time
FROM 
  pg_stat_history
WHERE 
  queryid IS NULL AND
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY database_id ;

Waqtiga DB

to_char( dhexda '1 millisecond' * pg_total_stat_history_rec.total_time, 'HH24: MI: SS.MS')

Waqtiga I/O

to_char( dhexda '1 millisecond' * ( pg_total_stat_history_rec.blk_read_time + pg_total_stat_history_rec.blk_write_time), 'HH24: MI: SS.MS')

TOP10 SQL wadarta guud_waqtiga

Codso

SELECT 
  queryid , 
  SUM(calls) AS calls ,
  SUM(total_time)  AS total_time  	
FROM 
  pg_stat_history
WHERE 
  queryid IS NOT NULL AND 
  database_id = DATABASE_ID AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT 
GROUP BY queryid 
ORDER BY 3 DESC 
LIMIT 10
----- ---------------------------------- | TOP10 SQL BY wadarta wakhtiga fulinta | #| queryid| wac| wac %| total_time (ms) | dbtime % +-----------------------------------+ ----------------------- | 1| 821760255| 2| .00001|00:03:23.141(203141.681 ms.)| 5.42 | 2| 4152624390| 2| .00001|00:03:13.929( 193929.215 ms.)| 5.17 | 3| 1484454471| 4| .00001|00:02:09.129 ( 129129.057 ms.)| 3.44 | 4| 655729273| 1| .00000|00:02:01.869 (121869.981 ms.)| 3.25 | 5| 2460318461| 1| .00000|00:01:33.113( 93113.835 ms.)| 2.48 | 6| 2194493487| 4| .00001|00:00:17.377( 17377.868 ms.)| .46 | 7| 1053044345| 1| .00000|00:00:06.156( 6156.352 ms.)| .16 | 8| 3644780286| 1| .00000|00:00:01.063 ( 1063.830 ms.)| .03

TOP10 SQL wadarta wakhtiga I/O

Codso

SELECT 
  queryid , 
  SUM(calls) AS calls ,
  SUM(blk_read_time + blk_write_time)  AS io_time
FROM 
  pg_stat_history
WHERE 
  queryid IS NOT NULL AND 
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY  queryid 
ORDER BY 3 DESC 
LIMIT 10
----- -------------------------------------------------- | TOP10 SQL BY TOTAL I/O TIME | #| queryid| wac| wac %| Waqtiga I/O (ms)|db I/O wakhtiga % +----+--------------------------- ------ --- -- | 1| 4152624390| 2| .00001|00:08:31.616( 511616.592 ms.)| 31.06 | 2| 821760255| 2| .00001|00:08:27.099 ( 507099.036 ms.)| 30.78 | 3| 655729273| 1| .00000|00:05:02.209 (302209.137 ms.)| 18.35 | 4| 2460318461| 1| .00000|00:04:05.981(245981.117 ms.)| 14.93 | 5| 1484454471| 4| .00001|00:00:39.144( 39144.221 ms.)| 2.38 | 6| 2194493487| 4| .00001|00:00:18.182( 18182.816 ms.)| 1.10 | 7| 1053044345| 1| .00000|00:00:16.611( 16611.722 ms.)| 1.01 | 8| 3644780286| 1| .00000|00:00:00.436 ( 436.205 ms.)| .03

TOP10 SQL wakhtiga ugu badan ee fulinta

Codso

SELECT 
  id AS snapshotid , 
  queryid , 
  snapshot_timestamp ,  
  max_time 
FROM 
  pg_stat_history 
WHERE 
  queryid IS NOT NULL AND 
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
ORDER BY 4 DESC 
LIMIT 10

----- ------------------------------------------------- | TOP10 SQL BY MAX WAQTIGA FULINTA | #| sawir | sawir ID| queryid| max_time (ms) +----+---+----------- --+------------------------------------------------ | 1| 05.04.2019/01/03 4169:655729273| 00| 02| 01.869: 121869.981: 2 (04.04.2019 ms.) | 17| 00/4153/821760255 00:01| 41.570| 101570.841| 3:04.04.2019:16 (00 ms.) | 4146| 821760255/00/01 41.570:101570.841| 4| 04.04.2019| 16:00:4144 (4152624390 ms.) | 00| 01/36.964/96964.607 5:04.04.2019| 17| 00| 4151:4152624390:00(01 ms.) | 36.964| 96964.607/6/05.04.2019 10:00| 4188| 1484454471| 00:01:33.452(93452.150 ms.) | 7| 04.04.2019/17/00 4150:2460318461| 00| 01| 33.113: 93113.835: 8 ( 04.04.2019 ms.) | 15| 00/4140/1484454471 00:00| 11.892| 11892.302| 9: 04.04.2019: 16 (00 ms.) | 4145| 1484454471/00/00 11.892:11892.302| 10| 04.04.2019| 17: 00: 4152 (1484454471 ms.) | 00| 00/11.892/11892.302 XNUMX:XNUMX| XNUMX| XNUMX| XNUMX: XNUMX: XNUMX (XNUMX ms.) | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX:XNUMX:XNUMX (XNUMX ms.)

TOP10 SQL ee SHARED kaydka u akhri/qor

Codso

SELECT 
  id AS snapshotid , 
  queryid ,
  snapshot_timestamp , 
  shared_blks_read , 
  shared_blks_written 
FROM 
  pg_stat_history
WHERE 
  queryid IS NOT NULL AND 
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT AND
  ( shared_blks_read > 0 OR shared_blks_written > 0 )
ORDER BY 4 DESC  , 5 DESC 
LIMIT 10
----- ------------------------- | TOP10 SQL BY SHARED BUFFER AKHRISO/QOR | #| sawir | sawir ID| queryid| blocks la wadaago akhri| blocks la wadaago qor +---+--- ----------------- | 1| 04.04.2019/17/00 4153:821760255| 797308| 0| 2| 04.04.2019 | 16| 00/4146/821760255 797308:0| 3| 05.04.2019| 01| 03 | 4169| 655729273/797158/0 4:04.04.2019| 16| 00| 4144| 4152624390 | 756514| 0/5/04.04.2019 17:00| 4151| 4152624390| 756514| 0 | 6| 04.04.2019/17/00 4150:2460318461| 734117| 0| 7| 04.04.2019 | 17| 00/4155/3644780286 52973:0| 8| 05.04.2019| 01| 03 | 4168| 1053044345/52818/0 9:04.04.2019| 15| 00| 4141| 2194493487 | 52813| 0/10/04.04.2019 16:00| 4147| 2194493487| 52813| 0 | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX| XNUMX | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX| XNUMX --------------------------------- -----

Histogramka codsiyada qaybinta wakhtiga ugu badan ee fulinta

Codsiyada

SELECT  
  MIN(max_time) AS hist_min  , 
  MAX(max_time) AS hist_max , 
  (( MAX(max_time) - MIN(min_time) ) / hist_columns ) as hist_width
FROM 
  pg_stat_history 
WHERE 
  queryid IS NOT NULL AND
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT ;

SELECT 
  SUM(calls) AS calls
FROM 
  pg_stat_history 
WHERE 
  queryid IS NOT NULL AND
  database_id =DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT AND 
  ( max_time >= hist_current_min AND  max_time < hist_current_max ) ;

|---- ---------------------------------------------------- | MAX_TIME HISTOGRAM | Wadarta Wicitaanada: 33851920 | WAQTIGA DA YARADA: 00:00:01.063 | MAX TIME: 00: 02: 01.869 ---- ------------------------------------------------- | daqadda | max duration| wicitaanada -------------------------------------- ------------------ | 00:00:01.063 (1063.830 ms.) | 00: 00: 13.144 (13144.445 ms.) | 9 | 00: 00: 13.144 (13144.445 ms.) | 00: 00: 25.225 (25225.060 ms.) | 0 | 00: 00: 25.225 (25225.060 ms.) | 00:00:37.305 (37305.675 ms.) | 0 | 00:00:37.305 (37305.675 ms.) | 00: 00: 49.386 ( 49386.290 ms.) | 0 | 00: 00: 49.386 ( 49386.290 ms.) | 00: 01: 01.466 (61466.906 ms.) | 0 | 00: 01: 01.466 (61466.906 ms.) | 00: 01: 13.547 ( 73547.521 ms.) | 0 | 00: 01: 13.547 ( 73547.521 ms.) | 00: 01: 25.628 ( 85628.136 ms.) | 0 | 00: 01: 25.628 ( 85628.136 ms.) | 00: 01: 37.708 (97708.751 ms.) | 4 | 00: 01: 37.708 (97708.751 ms.) | 00: 01: 49.789 (109789.366 ms.) | 2 | 00: 01: 49.789 (109789.366 ms.) | 00: 02: 01.869 (121869.981 ms.) | 0

TOP10 sawir-qaadis oo su'aal ah ilbiriqsikiiba

Codsiyada

--pg_qps.sql
--Calculate Query Per Second 
CREATE OR REPLACE FUNCTION pg_qps( pg_stat_history_id integer ) RETURNS double precision AS $$
DECLARE
 pg_stat_history_rec record ;
 prev_pg_stat_history_id integer ;
 prev_pg_stat_history_rec record;
 total_seconds double precision ;
 result double precision;
BEGIN 
  result = 0 ;
  
  SELECT *
  INTO pg_stat_history_rec
  FROM 
    pg_stat_history
  WHERE id = pg_stat_history_id ;

  IF pg_stat_history_rec.snapshot_timestamp IS NULL 
  THEN
    RAISE EXCEPTION 'ERROR - Not found pg_stat_history for id = %',pg_stat_history_id;
  END IF ;  
  
 --RAISE NOTICE 'pg_stat_history_id = % , snapshot_timestamp = %', pg_stat_history_id , 
 pg_stat_history_rec.snapshot_timestamp ;
  
  SELECT 
    MAX(id)   
  INTO
    prev_pg_stat_history_id
  FROM
    pg_stat_history
  WHERE 
    database_id = pg_stat_history_rec.database_id AND
	queryid IS NULL AND
	id < pg_stat_history_rec.id ;

  IF prev_pg_stat_history_id IS NULL 
  THEN
    RAISE NOTICE 'Not found previous pg_stat_history shapshot for id = %',pg_stat_history_id;
	RETURN NULL ;
  END IF;
  
  SELECT *
  INTO prev_pg_stat_history_rec
  FROM 
    pg_stat_history
  WHERE id = prev_pg_stat_history_id ;
  
  --RAISE NOTICE 'prev_pg_stat_history_id = % , prev_snapshot_timestamp = %', prev_pg_stat_history_id , prev_pg_stat_history_rec.snapshot_timestamp ;    

  total_seconds = extract(epoch from ( pg_stat_history_rec.snapshot_timestamp - prev_pg_stat_history_rec.snapshot_timestamp ));
  
  --RAISE NOTICE 'total_seconds = % ', total_seconds ;    
  
  --RAISE NOTICE 'calls = % ', pg_stat_history_rec.calls ;      
  
  IF total_seconds > 0 
  THEN
    result = pg_stat_history_rec.calls / total_seconds ;
  ELSE
   result = 0 ; 
  END IF;
   
 RETURN result ;
END
$$ LANGUAGE plpgsql;


SELECT 
  id , 
  snapshot_timestamp ,
  calls , 	
  total_time , 
  ( select pg_qps( id )) AS QPS ,
  blk_read_time ,
  blk_write_time
FROM 
  pg_stat_history
WHERE 
  queryid IS NULL AND 
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT AND
  ( select pg_qps( id )) IS NOT NULL 
ORDER BY 5 DESC 
LIMIT 10

|---- ---------------------------------------------------- | TOP10 Snapshots ayaa lagu dalbaday nambarada QueryPerSeconds -------------------------------------------------- ----- ------------------------------------------------- | #| sawir | sawir ID| wac| wadarta dbtime| QPS| I/O waqtiga| I/O waqtiga % +-------------------------------------- ---------- ------------------ 1| 04.04.2019/20/04 4161:5758631| 00| 06| 30.513: 390513.926: 1573.396 ( 00 ms.)| 00| 01.470:1470.110:376 (2 ms.)| .04.04.2019 | 17| 00/4149/3529197 00:11| 48.830| 708830.618| 980.332:00:12( 47.834 ms.)| 767834.052| 108.324:3:04.04.2019( 16 ms.)| 00 | 4143| 3525360/00/10 13.492:613492.351| 979.267| 00| 08:41.396:521396.555( 84.988 ms.)| 4| 04.04.2019:21:03(4163 ms.)| 2781536 | 00| 03/06.470/186470.979 785.745:00| 00| 00.249| 249.865:134:5 (04.04.2019 ms.)| 19| 03:4159:2890362 (00 ms.)| .03 | 16.784| 196784.755 776.979:00| 00| 01.441| 1441.386:732:6 (04.04.2019 ms.)| 14| 00:4137:2397326 (00 ms.)| .04 | 43.033| 283033.854/665.924/00 00:00.024| 24.505| 009| 7:04.04.2019:15 (00 ms.)| 4139| 2394416:00:04 (51.435 ms.)| .291435.010 | 665.116| 00/00/12.025 12025.895:4.126| 8| 04.04.2019| 13: 00: 4135 (2373043 ms.)| 00| 04:26.791:266791.988 (659.179 ms.)| 00 | 00| 00.064 64.261:024| 9| 05.04.2019| 01:03:4167(4387191 ms.)| 00| 06:51.380:411380.293 (609.332 ms.)| .00 | 05| 18.847/318847.407/77.507 10:04.04.2019| 18| 01| 4157: 1145596: 00 ( 01 ms.)| 19.217| 79217.372:313.004:00(00 ms.)| 01.319 | 1319.676| 1.666/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX: XNUMX: XNUMX ( XNUMX ms.)| XNUMX| XNUMX:XNUMX:XNUMX (XNUMX ms.)| XNUMX

Taariikhda Dilka Saacadlaha ah ee QueryPerSeconds iyo wakhtiga I/O

Codso

SELECT 
  id , 
  snapshot_timestamp ,
  calls , 	
  total_time , 
  ( select pg_qps( id )) AS QPS ,
  blk_read_time ,
  blk_write_time
FROM 
  pg_stat_history
WHERE 
  queryid IS NULL AND 
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
ORDER BY 2

|-----------------------------------------------------------------------------------------------
| HOURLY EXECUTION HISTORY  WITH QueryPerSeconds and I/O Time
-----------------------------------------------------------------------------------------------------------------------------------------------
| QUERY PER SECOND HISTORY
|    #|          snapshot| snapshotID|      calls|                      total dbtime|        QPS|                          I/O time| I/O time %
+-----+------------------+-----------+-----------+----------------------------------+-----------+----------------------------------+-----------
|    1|  04.04.2019 11:00|       4131|       3747|  00:00:00.835(       835.374 ms.)|      1.041|  00:00:00.000(          .000 ms.)|       .000
|    2|  04.04.2019 12:00|       4133|    1002722|  00:01:52.419(    112419.376 ms.)|    278.534|  00:00:00.149(       149.105 ms.)|       .133
|    3|  04.04.2019 13:00|       4135|    2373043|  00:04:26.791(    266791.988 ms.)|    659.179|  00:00:00.064(        64.261 ms.)|       .024
|    4|  04.04.2019 14:00|       4137|    2397326|  00:04:43.033(    283033.854 ms.)|    665.924|  00:00:00.024(        24.505 ms.)|       .009
|    5|  04.04.2019 15:00|       4139|    2394416|  00:04:51.435(    291435.010 ms.)|    665.116|  00:00:12.025(     12025.895 ms.)|      4.126
|    6|  04.04.2019 16:00|       4143|    3525360|  00:10:13.492(    613492.351 ms.)|    979.267|  00:08:41.396(    521396.555 ms.)|     84.988
|    7|  04.04.2019 17:00|       4149|    3529197|  00:11:48.830(    708830.618 ms.)|    980.332|  00:12:47.834(    767834.052 ms.)|    108.324
|    8|  04.04.2019 18:01|       4157|    1145596|  00:01:19.217(     79217.372 ms.)|    313.004|  00:00:01.319(      1319.676 ms.)|      1.666
|    9|  04.04.2019 19:03|       4159|    2890362|  00:03:16.784(    196784.755 ms.)|    776.979|  00:00:01.441(      1441.386 ms.)|       .732
|   10|  04.04.2019 20:04|       4161|    5758631|  00:06:30.513(    390513.926 ms.)|   1573.396|  00:00:01.470(      1470.110 ms.)|       .376
|   11|  04.04.2019 21:03|       4163|    2781536|  00:03:06.470(    186470.979 ms.)|    785.745|  00:00:00.249(       249.865 ms.)|       .134
|   12|  04.04.2019 23:03|       4165|    1443155|  00:01:34.467(     94467.539 ms.)|    200.438|  00:00:00.015(        15.287 ms.)|       .016
|   13|  05.04.2019 01:03|       4167|    4387191|  00:06:51.380(    411380.293 ms.)|    609.332|  00:05:18.847(    318847.407 ms.)|     77.507
|   14|  05.04.2019 02:03|       4171|     189852|  00:00:10.989(     10989.899 ms.)|     52.737|  00:00:00.539(       539.110 ms.)|      4.906
|   15|  05.04.2019 03:01|       4173|       3627|  00:00:00.103(       103.000 ms.)|      1.042|  00:00:00.004(         4.131 ms.)|      4.010
|   16|  05.04.2019 04:00|       4175|       3627|  00:00:00.085(        85.235 ms.)|      1.025|  00:00:00.003(         3.811 ms.)|      4.471
|   17|  05.04.2019 05:00|       4177|       3747|  00:00:00.849(       849.454 ms.)|      1.041|  00:00:00.006(         6.124 ms.)|       .721
|   18|  05.04.2019 06:00|       4179|       3747|  00:00:00.849(       849.561 ms.)|      1.041|  00:00:00.000(          .051 ms.)|       .006
|   19|  05.04.2019 07:00|       4181|       3747|  00:00:00.839(       839.416 ms.)|      1.041|  00:00:00.000(          .062 ms.)|       .007
|   20|  05.04.2019 08:00|       4183|       3747|  00:00:00.846(       846.382 ms.)|      1.041|  00:00:00.000(          .007 ms.)|       .001
|   21|  05.04.2019 09:00|       4185|       3747|  00:00:00.855(       855.426 ms.)|      1.041|  00:00:00.000(          .065 ms.)|       .008
|   22|  05.04.2019 10:00|       4187|       3797|  00:01:40.150(    100150.165 ms.)|      1.055|  00:00:21.845(     21845.217 ms.)|     21.812

Qoraalka dhammaan SQL-doorashada

Codso

SELECT 
  queryid , 
  query 
FROM 
  pg_stat_history
WHERE 
  queryid IS NOT NULL AND 
  database_id = DATABASE_ID  AND
  snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY queryid , query

Natiijada

Sida aad arki karto, adoo isticmaalaya habab fudud oo fudud, waxaad heli kartaa macluumaad badan oo faa'iido leh oo ku saabsan culeyska shaqada iyo xaaladda xogta xogta.

Fiiro gaar ah:Haddii aan ku duubno su'aalaha weydiinta, waxaan heli doonaa taariikhda weydiimo gaar ah (si loo badbaadiyo meel bannaan, warbixinnada weydiimo gaar ah waa la dhaafay).

Markaa, xogta tirakoobka ee waxqabadka weydiintu waa la heli karaa oo la ururiyaa.
Marxaladda koowaad "ururinta xogta tirakoobka" waa la dhammeeyey.

Waxaad u gudbi kartaa heerka labaad - "dejinta cabbirka waxqabadka".
Korjoogteynta waxqabadka weydiinta PostgreSQL. Qaybta 1 - warbixinta

Laakiin taasi waa sheeko gebi ahaanba ka duwan.

In la sii wado ...

Source: www.habr.com

Add a comment