แแถแแแแแแแแขแแแแแ "
แขแแแแแแแนแแแทแแทแแแ แแทแแแแแ แถแ แแแแแแแพแแแแฝแ แแทแแงแแถแ แแแแแถแแแแถแแ แแพแแแแแแถแแแถแแแแแแแแแแขแแแธแแแแแขแถแ แแแฝแแแถแแแแแแแแพแแแแแแแแทแแแแทแแแแแถแ pg_locks แ
แแแแแถแ
แแแแแถแแแแแถแแแแแธแแแแแแแแแแแแถแแแ แแทแแแแแแแแแถแแแแแแแทแแแถแแแแแแ แแ แขแแแแแแขแถแ แแถแแแแ แปแแ แแถแแแทแแแแ แแทแแแแทแแแแผแแแถแแแแแถแแแแแแแถแแแแแถแแ แแทแแแแแนแแแปแแ
แแแแ แผแโแแทแแแแแแ
แแแแแแแแทแแแแถแแแแแถแ pg_locks
archive_locking
CREATE TABLE archive_locking
( timepoint timestamp without time zone ,
locktype text ,
relation oid ,
mode text ,
tid xid ,
vtid text ,
pid integer ,
blocking_pids integer[] ,
granted boolean ,
queryid bigint
);
แแแแถแแแแถแแถแแแบแแแแแแแแนแแแถแแถแ archive_pg_stat_activityแแทแแแแแถแแแแขแทแแแ
แแธแแแ -
แแพแแแแธแแแแแแแฝแแแ แแแแฝแ แแปแแแถแแแแแผแแแถแแแแแพแแแแถแแ
update_history_locking_by_queryid
--update_history_locking_by_queryid.sql
CREATE OR REPLACE FUNCTION update_history_locking_by_queryid() RETURNS boolean AS $$
DECLARE
result boolean ;
current_minute double precision ;
start_minute integer ;
finish_minute integer ;
start_period timestamp without time zone ;
finish_period timestamp without time zone ;
lock_rec record ;
endpoint_rec record ;
current_hour_diff double precision ;
BEGIN
RAISE NOTICE '***update_history_locking_by_queryid';
result = TRUE ;
current_minute = extract ( minute from now() );
SELECT * FROM endpoint WHERE is_need_monitoring
INTO endpoint_rec ;
current_hour_diff = endpoint_rec.hour_diff ;
IF current_minute < 5
THEN
RAISE NOTICE 'Current time is less than 5 minute.';
start_period = date_trunc('hour',now()) + (current_hour_diff * interval '1 hour');
finish_period = start_period - interval '5 minute' ;
ELSE
finish_minute = extract ( minute from now() ) / 5 ;
start_minute = finish_minute - 1 ;
start_period = date_trunc('hour',now()) + interval '1 minute'*start_minute*5+(current_hour_diff * interval '1 hour');
finish_period = date_trunc('hour',now()) + interval '1 minute'*finish_minute*5+(current_hour_diff * interval '1 hour') ;
END IF ;
RAISE NOTICE 'start_period = %', start_period;
RAISE NOTICE 'finish_period = %', finish_period;
FOR lock_rec IN
WITH act_queryid AS
(
SELECT
pid ,
timepoint ,
query_start AS started ,
MAX(timepoint) OVER (PARTITION BY pid , query_start ) AS finished ,
queryid
FROM
activity_hist.history_pg_stat_activity
WHERE
timepoint BETWEEN start_period and
finish_period
GROUP BY
pid ,
timepoint ,
query_start ,
queryid
),
lock_pids AS
(
SELECT
hl.pid ,
hl.locktype ,
hl.mode ,
hl.timepoint ,
MIN ( timepoint ) OVER (PARTITION BY pid , locktype ,mode ) as started
FROM
activity_hist.history_locking hl
WHERE
hl.timepoint between start_period and
finish_period
GROUP BY
hl.pid ,
hl.locktype ,
hl.mode ,
hl.timepoint
)
SELECT
lp.pid ,
lp.locktype ,
lp.mode ,
lp.timepoint ,
aq.queryid
FROM lock_pids lp LEFT OUTER JOIN act_queryid aq ON ( lp.pid = aq.pid AND lp.started BETWEEN aq.started AND aq.finished )
WHERE aq.queryid IS NOT NULL
GROUP BY
lp.pid ,
lp.locktype ,
lp.mode ,
lp.timepoint ,
aq.queryid
LOOP
UPDATE activity_hist.history_locking SET queryid = lock_rec.queryid
WHERE pid = lock_rec.pid AND locktype = lock_rec.locktype AND mode = lock_rec.mode AND timepoint = lock_rec.timepoint ;
END LOOP;
RETURN result ;
END
$$ LANGUAGE plpgsql;
แแถแแแแแแแแ แแแแแแแแแฝแแแแแแแฝแแแแแผแแแถแแแแแพแแ แแ แปแแแแแแแแถแแแ แแแแปแแแถแแถแ history_locking แ แพแแแแแแถแแแแแแ แแแแแแแแถแแแถแแแแแธแแแแผแแแถแแแแแแพแแแแแแถแแแแถแแถแ archive_locking แแแแแแแนแแแแแผแแแถแแแแแแถแแปแแแแแปแแแแแแแแแแแแแแทแแถแแแแแแ
แแแแแแ
แแแแแแถแแแผแแ แขแแแธแแแแพแแแถแแแผแแ แ
แแแแปแแแแแ แถแแแถแแ แถแแแแแแแแแแแแแแ แถแแแแ
แแแแพ
WITH
t AS
(
SELECT
locktype ,
mode ,
count(*) as total
FROM
activity_hist.archive_locking
WHERE
timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
NOT granted
GROUP BY
locktype ,
mode
)
SELECT
locktype ,
mode ,
total * interval '1 second' as duration
FROM t
ORDER BY 3 DESC
แงแแถแ แแแ:
| แแแแ แถแแแถแแ แถแแแแแแแแ LOCKTYPES -----------------------+------------------------------------+ ------------------- | แแแแแแแ แถแแแแ| แแแแ| แแแแแแ +--------------------+-------------------------------- --+-------------------- | แแแแแแแแทแแแแแทแแถแ| ShareLock| แกแฉ:แฃแฉ:แขแฆ | tuple| AccessExclusiveLock| 19:39:26 ------------------------------+----------------------- --------+----------
แแถแแ แถแแแแแแแแถแแแแแแแแแ
แแแแพ
WITH
t AS
(
SELECT
locktype ,
mode ,
count(*) as total
FROM
activity_hist.archive_locking
WHERE
timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
granted
GROUP BY
locktype ,
mode
)
SELECT
locktype ,
mode ,
total * interval '1 second' as duration
FROM t
ORDER BY 3 DESC
แงแแถแ แแแ:
| แแถแแ แถแแแแแแแแถแแแแแแแแแ +--------------------------------+-------------------------- --------+-------- | แแแแแแแ แถแแแแ| แแแแ| แแแแแแ +--------------------+-------------------------------- --+-------------------- | แแแแถแแแแแแ | RowExclusiveLock| 51:11:10 | แแทแแแแทแ | ExclusiveLock| แคแจ:แกแ :แคแฃ | แแแแแแแแทแแแแแทแแถแ| ExclusiveLock| 48:10:43 | แแแแถแแแแแแ | AccessShareLock| 44:24:53 | tuple| AccessExclusiveLock| แกแง:แฅแจ:แคแง | tuple| ExclusiveLock| 20:06:13 | แแแแถแแแแแแ | ShareUpdateExclusiveLock| 17:58:47 | แแแแแป | RowExclusiveLock| 01:40:41 | แแแแแแแแทแแแแแทแแถแ| ShareLock| 00:26:41 | แแแแแธแ| ExclusiveLock| 00:00:01 ------------------------------+----------------------- --------+----------
แแแแแแถแแแแแขแทแแขแแแธแแแแพแแแแฝแแแถแแแแถแแ
แแแแปแแแแแ แถแแแถแแ แถแแแแแแแ LOCKTYPES แแแแแถแแแแแแแแ
แแแแพ
WITH
lt AS
(
SELECT
pid ,
locktype ,
mode ,
timepoint ,
queryid ,
blocking_pids ,
MIN ( timepoint ) OVER (PARTITION BY pid , locktype ,mode ) as started
FROM
activity_hist.archive_locking
WHERE
timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND
pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
NOT granted AND
queryid IS NOT NULL
GROUP BY
pid ,
locktype ,
mode ,
timepoint ,
queryid ,
blocking_pids
)
SELECT
lt.pid ,
lt.locktype ,
lt.mode ,
lt.started ,
lt.queryid ,
lt.blocking_pids ,
COUNT(*) * interval '1 second' as duration
FROM lt
GROUP BY
lt.pid ,
lt.locktype ,
lt.mode ,
lt.started ,
lt.queryid ,
lt.blocking_pids
ORDER BY 4
แงแแถแ แแแ:
| แแแแ แถแแแถแแ แถแแแแแแแแ LOCKTYPES แแแแแถแแแถแแแฝแ +----------+----------------+--------------------- --------------------------------+------------------ -+--------------------+----------------- --------- | pid| แแแแแแแ แถแแแแ| แแแแ| แแถแแ แถแแแแแแพแ| แแแแฝแ | blocking_pids| แแแแแแ ----------+--------------------------------+----------- --------+--------------------------------+--------- ----------+--------------------------------+---------------- ---| แกแกแขแจแจ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 11288-2019-09 17:10:00| 00.302936| {389015618226997618}| 11092:00:03 | แกแกแฆแขแฆ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 34-11626-2019 09:17:10| 00| {21.380921}| 389015618226997618:12380:00 | แกแกแฆแขแฆ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 00-29-11626 2019:09:17| 10| {00}| 21.380921:389015618226997618:11092 | แกแกแฆแขแฆ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 00-03-25 11626:2019:09| 17| {10}| 00:21.380921:389015618226997618 | แกแกแฆแขแฆ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 12213-00-01 55:11626:2019| 09| {17}| 10:00:21.380921 | แกแกแฆแขแฉ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 389015618226997618-12751-00 00:01:11629| 2019| {09}| 17:10:00 | แกแกแฆแขแฉ| แแแแแแแแทแแแแแทแแถแ| ShareLock| 24.331935-389015618226997618-11092 00:03:22| 11629| {2019}| 09:17:10 | 00| แแแแแแแแทแแแแแทแแถแ| ShareLock| 24.331935-389015618226997618-12007 00:00:01| 12007| {2019}| 09:17:10 | 05| แแแแแแแแทแแแแแทแแถแ| ShareLock| 03.327933-389015618226997618-11629 00:00:13| 12007| {2019}| 09:17:10 | 05| แแแแแแแแทแแแแแทแแถแ| ShareLock| 03.327933-389015618226997618-11092 00:01:10| 12007| {2019}| 09:17:10 | 05| แแแแแแแแทแแแแแทแแถแ| ShareLock| 03.327933-389015618226997618-11288 00:00:05| 12213| {2019}| 09:17:10
แ แถแแแแแแแแถแแแแแแแแ แถแแแแแแแแแแแฝแ
แแแแพ
WITH
lt AS
(
SELECT
pid ,
locktype ,
mode ,
timepoint ,
queryid ,
blocking_pids ,
MIN ( timepoint ) OVER (PARTITION BY pid , locktype ,mode ) as started
FROM
activity_hist.archive_locking
WHERE
timepoint between pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND
pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
granted AND
queryid IS NOT NULL
GROUP BY
pid ,
locktype ,
mode ,
timepoint ,
queryid ,
blocking_pids
)
SELECT
lt.pid ,
lt.locktype ,
lt.mode ,
lt.started ,
lt.queryid ,
lt.blocking_pids ,
COUNT(*) * interval '1 second' as duration
FROM lt
GROUP BY
lt.pid ,
lt.locktype ,
lt.mode ,
lt.started ,
lt.queryid ,
lt.blocking_pids
ORDER BY 4
แงแแถแ แแแ:
| แแแแแแถแแแแแแแแ แถแแแแแแถแแแแแฝแ +----------+----------+------ -------------+ --------------------------------+--------------------+ --------------------+------------------ -------- | pid| แแแแแแแ แถแแแแ| แแแแ| แแถแแ แถแแแแแแพแ| แแแแฝแ | blocking_pids| แแแแแแ ----------+--------------------------------+----------- --------+--------------------------------+--------- ----------+--------------------------------+---------------- ---| แกแกแขแจแจ| แแแแถแแแแแแ | RowExclusiveLock| 11288-2019-09 17:10:00| 00.302936| {389015618226997618}| 11092:00:03 | แกแกแ แฉแข| แแแแแแแแทแแแแแทแแถแ| ExclusiveLock| 34-11092-2019 09:17:10| 00| {}| 00.302936:389015618226997618:00 | แกแกแขแจแจ| แแแแถแแแแแแ | RowExclusiveLock| 03-34-11288 2019:09:17| 10| {}| 00:00.302936:389015618226997618 | แกแกแ แฉแข| แแแแถแแแแแแ | RowExclusiveLock| 00-00-10 11092:2019:09| 17| {}| 10:00:00.302936 | แกแกแ แฉแข| แแทแแแแทแ | ExclusiveLock| 389015618226997618-00-03 34:11092:2019| 09| {}| 17:10:00 | แกแกแขแจแจ| แแทแแแแทแ | ExclusiveLock| 00.302936-389015618226997618-00 03:34:11288| 2019| {09}| 17:10:00 | แกแกแขแจแจ| แแแแแแแแทแแแแแทแแถแ| ExclusiveLock| 00.302936-389015618226997618-11092 00:03:34| 11288| {2019}| 09:17:10 | แกแกแขแจแจ| tuple| AccessExclusiveLock| 00-00.302936-389015618226997618 11092:00:03| 34| {11288}| 2019:09:17
แแถแแแแแพแแแแแแแแทแ แถแแแแแแพแแแแธแแทแแถแแงแแแแแแแทแ แแแปแแแแถแแขแแปแแแแแ
- แแแแพแแถแแฝแ queryid=389015618226997618 แแแแผแแแถแแแแแแทแแแแแทแแแแแแแพแแแถแแแถแแฝแ pid=11288 แแแแปแแแแแ แถแแแถแแแแแแแแถแแแแแแ แถแแแแแแพแแแธ 2019-09-17 10:00:00 แแแแแถแแแแแแแแ 3 แแถแแธแ
- แแถแแ แถแแแแแแแแผแแแถแแแแแแแแแแแแแแแแแพแแแถแแแถแแฝแ pid=11092
- แแแแพแแแถแแแถแแฝแ pid=11092 แแแแแทแแแแแทแแแแพแแถแแฝแ queryid=389015618226997618 แ แถแแแแแแพแแแธ 2019-09-17 10:00:00 แ แถแแแแแแแแแแ 3 แแถแแธแ
แแแแแแ
แฅแกแผแแแแแแแแปแแแแแแนแแแถแแแแแแแแแแฝแแฑแแแ แถแแแขแถแแแแแแแแทแแแถแแแแแแแแแแแแแปแแแนแแ แถแแแแแแพแ - แแถแแแแแแผแแแแแทแแทแแทแแแถแแแทแแถแแแแแธแแพแแแแแแแแทแแแแถแแแแแ แถแแแทแแแถแแแแแแแแถแแแ
แแ แแแแขแแถแแ แแแแปแแ แแแแฟแแถ แแพแแแนแแแแฝแแแถแแแแแแแ แแแถแแแฝแแ แแแฝแ (แแแแแแแแ แแนแ metalink แแแแ Oracle)แ
แแถแแผแแ แแถแแบแแแแแถแแแ แแแปแแแแแ แแแแแทแแธแแถแแแแแแแแแแถแแแแแพแแแแผแแแถแแแแแพแฑแแแแถแแแแแแแปแแแแแแแแแแแแถแฑแแแแถแแแฟแแแถแแแแแขแถแ แแแแพแแ แแถแแ
แแแแปแแแนแแแแแถแแถแแแแแ แแแแแแแแแแแแแ
แแพ github แแถแแแแแถแแแปแแแแแ
แแแแแ: www.habr.com