73 lines
2.6 KiB
Plaintext
73 lines
2.6 KiB
Plaintext
CREATE OR REPLACE FUNCTION generate_histogram()
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RETURNS TABLE (
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range TEXT, freq INT, bar TEXT
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) AS $$
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Declare
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bucket_id integer;
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query_id text;
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BEGIN
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select bucket into bucket_id from pg_stat_monitor order by calls desc limit 1;
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select queryid into query_id from pg_stat_monitor order by calls desc limit 1;
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--RAISE INFO 'bucket_id %', bucket_id;
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--RAISE INFO 'query_id %', query_id;
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return query
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SELECT * FROM histogram(bucket_id, query_id) AS a(range TEXT, freq INT, bar TEXT);
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION run_pg_sleep(INTEGER) RETURNS VOID AS $$
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DECLARE
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loops ALIAS FOR $1;
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BEGIN
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FOR i IN 1..loops LOOP
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--RAISE INFO 'Current timestamp: %', timeofday()::TIMESTAMP;
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RAISE INFO 'Sleep % seconds', i;
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PERFORM pg_sleep(i);
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END LOOP;
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END;
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$$ LANGUAGE 'plpgsql' STRICT;
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CREATE EXTENSION pg_stat_monitor;
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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Set pg_stat_monitor.pgsm_track='all';
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select run_pg_sleep(5);
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INFO: Sleep 1 seconds
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INFO: Sleep 2 seconds
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INFO: Sleep 3 seconds
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INFO: Sleep 4 seconds
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INFO: Sleep 5 seconds
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run_pg_sleep
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--------------
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(1 row)
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SELECT substr(query, 0,50) as query, calls, resp_calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
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query | calls | resp_calls
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---------------------------------------------------+-------+-----------------------
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SELECT pg_sleep(i) | 5 | {0,0,0,0,0,0,3,2,0,0}
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SELECT pg_stat_monitor_reset() | 1 | {1,0,0,0,0,0,0,0,0,0}
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SELECT substr(query, 0,50) as query, calls, resp_ | 1 | {1,0,0,0,0,0,0,0,0,0}
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Set pg_stat_monitor.pgsm_track='all' | 1 | {1,0,0,0,0,0,0,0,0,0}
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select run_pg_sleep(5) | 1 | {0,0,0,0,0,0,0,0,1,0}
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(5 rows)
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select * from generate_histogram();
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range | freq | bar
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--------------------+------+--------------------------------------------------------------------------------------------
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(0 - 3)} | 0 |
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(3 - 10)} | 0 |
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(10 - 31)} | 0 |
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(31 - 100)} | 0 |
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(100 - 316)} | 0 |
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(316 - 1000)} | 0 |
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(1000 - 3162)} | 3 | ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
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(3162 - 10000)} | 2 | ■■■■■■■■■■■■■■■■■■■■
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(10000 - 31622)} | 0 |
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(31622 - 100000)} | 0 |
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(10 rows)
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DROP EXTENSION pg_stat_monitor;
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