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Commit547f04e

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pgbench: Improve time logic.
Instead of instr_time (struct timespec) and the INSTR_XXX macros,introduce pg_time_usec_t and use integer arithmetic. Don't include theconnection time in TPS unless using -C mode, but report it separately.Author: Fabien COELHO <coelho@cri.ensmp.fr>Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com>Discussion:https://postgr.es/m/20200227180100.zyvjwzcpiokfsqm2%40alap3.anarazel.de
1 parentb1d6a8f commit547f04e

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4 files changed

+231
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4 files changed

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‎doc/src/sgml/ref/pgbench.sgml

Lines changed: 20 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -58,8 +58,10 @@ number of clients: 10
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number of threads: 1
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number of transactions per client: 1000
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number of transactions actually processed: 10000/10000
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tps = 85.184871 (including connections establishing)
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tps = 85.296346 (excluding connections establishing)
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latency average = 11.013 ms
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latency stddev = 7.351 ms
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initial connection time = 45.758 ms
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tps = 896.967014 (without initial connection time)
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</screen>
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The first six lines report some of the most important parameter
@@ -68,8 +70,7 @@ tps = 85.296346 (excluding connections establishing)
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and number of transactions per client); these will be equal unless the run
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failed before completion. (In <option>-T</option> mode, only the actual
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number of transactions is printed.)
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The last two lines report the number of transactions per second,
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figured with and without counting the time to start database sessions.
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The last line reports the number of transactions per second.
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</para>
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<para>
@@ -2257,22 +2258,22 @@ number of clients: 10
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number of threads: 1
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number of transactions per client: 1000
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number of transactions actually processed: 10000/10000
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latency average =15.844 ms
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latency stddev =2.715 ms
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tps = 618.764555 (including connections establishing)
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tps =622.977698 (excluding connections establishing)
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latency average =10.870 ms
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latency stddev =7.341 ms
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initial connection time = 30.954 ms
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tps =907.949122 (without initial connection time)
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statement latencies in milliseconds:
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0.002 \set aid random(1, 100000 * :scale)
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0.005 \set bid random(1, 1 * :scale)
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0.002 \set tid random(1, 10 * :scale)
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0.001 \set delta random(-5000, 5000)
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0.326 BEGIN;
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0.603 UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
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0.454 SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
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5.528 UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
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7.335 UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
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0.371 INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
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1.212 END;
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0.001 \set aid random(1, 100000 * :scale)
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0.001 \set bid random(1, 1 * :scale)
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0.001 \set tid random(1, 10 * :scale)
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0.000 \set delta random(-5000, 5000)
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0.046 BEGIN;
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0.151 UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
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0.107 SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
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4.241 UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
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5.245 UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
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0.102 INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
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0.974 END;
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</screen>
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</para>
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