40 lines
1.1 KiB
PL/PgSQL
40 lines
1.1 KiB
PL/PgSQL
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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Set pg_stat_monitor.track='all';
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select run_pg_sleep(5);
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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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select * from generate_histogram();
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DROP EXTENSION pg_stat_monitor;
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