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97 lines
4.9 KiB
97 lines
4.9 KiB
with pg_stat_statements_normalized as ( |
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select *, |
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regexp_replace( |
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regexp_replace( |
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regexp_replace( |
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regexp_replace(query, |
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E'\\?(::[a-zA-Z_]+)?( *, *\\?(::[a-zA-Z_]+)?)+', '?', 'g'), |
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E'\\$[0-9]+(::[a-zA-Z_]+)?( *, *\\$[0-9]+(::[a-zA-Z_]+)?)*', '$N', 'g'), |
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E'--.*$', '', 'ng'), |
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E'/\\*.*?\\*/', '', 'g') |
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as query_normalized |
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from pg_stat_statements |
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), |
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totals as ( |
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select sum(total_time) AS total_time, greatest(sum(blk_read_time+blk_write_time), 1) as io_time, |
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sum(total_time-blk_read_time-blk_write_time) as cpu_time, sum(calls) AS ncalls, |
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sum(rows) as total_rows FROM pg_stat_statements |
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WHERE TRUE |
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), |
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_pg_stat_statements as ( |
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select |
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(select datname from pg_database where oid = p.dbid) as database, |
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(select rolname from pg_roles where oid = p.userid) as username, |
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query_normalized as query, sum(total_time) as total_time, |
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sum(blk_read_time) as blk_read_time, sum(blk_write_time) as blk_write_time, |
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sum(calls) as calls, sum(rows) as rows |
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from pg_stat_statements_normalized p |
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where TRUE |
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group by dbid, userid, query_normalized |
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), |
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totals_readable as ( |
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select to_char(interval '1 millisecond' * total_time, 'HH24:MI:SS') as total_time, |
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(100*io_time/total_time)::numeric(20,2) AS io_time_percent, |
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to_char(ncalls, 'FM999G999G990') AS total_queries, |
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(select to_char(count(distinct query), 'FM999G999G990') from _pg_stat_statements) as unique_queries |
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from totals |
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), |
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statements as ( |
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select |
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(100*total_time/(select total_time from totals)) AS time_percent, |
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(100*(blk_read_time+blk_write_time)/(select io_time from totals)) AS io_time_percent, |
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(100*(total_time-blk_read_time-blk_write_time)/(select cpu_time from totals)) AS cpu_time_percent, |
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to_char(interval '1 millisecond' * total_time, 'HH24:MI:SS') AS total_time, |
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(total_time::numeric/calls)::numeric(20,2) AS avg_time, |
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((total_time-blk_read_time-blk_write_time)::numeric/calls)::numeric(20, 2) AS avg_cpu_time, |
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((blk_read_time+blk_write_time)::numeric/calls)::numeric(20, 2) AS avg_io_time, |
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to_char(calls, 'FM999G999G990') AS calls, |
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(100*calls/(select ncalls from totals))::numeric(20, 2) AS calls_percent, |
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to_char(rows, 'FM999G999G999G990') AS rows, |
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(100*rows/(select total_rows from totals))::numeric(20, 2) AS row_percent, |
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database, |
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username, |
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query |
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from _pg_stat_statements |
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where ((total_time-blk_read_time-blk_write_time)/(select cpu_time from totals)>=0.01 or (blk_read_time-blk_write_time)/(select io_time from totals)>=0.01 or calls/(select ncalls from totals)>=0.02) |
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union all |
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select |
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(100*sum(total_time)::numeric/(select total_time from totals)) AS time_percent, |
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(100*sum(blk_read_time+blk_write_time)::numeric/(select io_time from totals)) AS io_time_percent, |
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(100*sum(total_time-blk_read_time-blk_write_time)::numeric/(select cpu_time from totals)) AS cpu_time_percent, |
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to_char(interval '1 millisecond' * sum(total_time), 'HH24:MI:SS') AS total_time, |
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(sum(total_time)::numeric/sum(calls))::numeric(20,2) AS avg_time, |
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(sum(total_time-blk_read_time-blk_write_time)::numeric/sum(calls))::numeric(20, 2) AS avg_cpu_time, |
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(sum(blk_read_time+blk_write_time)::numeric/sum(calls))::numeric(20, 2) AS avg_io_time, |
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to_char(sum(calls), 'FM999G999G990') AS calls, |
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(100*sum(calls)/(select ncalls from totals))::numeric(20, 2) AS calls_percent, |
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to_char(sum(rows), 'FM999G999G999G990') AS rows, |
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(100*sum(rows)/(select total_rows from totals))::numeric(20, 2) AS row_percent, |
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'all' as database, |
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'all' as username, |
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'other' as query |
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from _pg_stat_statements |
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where not ((total_time-blk_read_time-blk_write_time)/(select cpu_time from totals)>=0.01 or (blk_read_time-blk_write_time)/(select io_time from totals)>=0.01 or calls/(select ncalls from totals)>=0.02) |
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), |
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statements_readable as ( |
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select row_number() over (order by s.time_percent desc) as pos, |
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to_char(time_percent, 'FM90D0') || '%' AS time_percent, |
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to_char(io_time_percent, 'FM90D0') || '%' AS io_time_percent, |
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to_char(cpu_time_percent, 'FM90D0') || '%' AS cpu_time_percent, |
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to_char(avg_io_time*100/(coalesce(nullif(avg_time, 0), 1)), 'FM90D0') || '%' AS avg_io_time_percent, |
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total_time, avg_time, avg_cpu_time, avg_io_time, calls, calls_percent, rows, row_percent, |
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database, username, query |
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from statements s |
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) |
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select E'total time:\t' || total_time || ' (IO: ' || io_time_percent || E'%)\n' || |
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E'total queries:\t' || total_queries || E'\n' || |
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E'unique queries:\t' || unique_queries || E'\n\n' |
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from totals_readable |
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union all |
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(select E'=============================================================================================================\n' || |
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'pos:' || pos || E'\t total time: ' || total_time || ' (' || time_percent || ', CPU: ' || cpu_time_percent || ', IO: ' || io_time_percent || E')\t calls: ' || calls || |
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' (' || calls_percent || E'%)\t avg_time: ' || avg_time || 'ms (IO: ' || avg_io_time_percent || E')\n' || |
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'user: ' || username || E'\t db: ' || database || E'\t rows: ' || rows || E'\t query:\n' || query || E'\n' |
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from statements_readable order by pos);
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