pgbench如何实现压力测试脚本

创建测试表, 并填充数据 5000W 笔记录.
pgbench -i -F 100 -s 500 -h 127.0.0.1 -U user


压力测试 300秒.
pgbench -c 128 -j 1024 -M prepared -n -s 500 -T 300 -f ./rw.sql -h 127.0.0.1 -p 5432 -U user

cat rw.sql
\set nbranches :scale
\set ntellers 10 * :scale
\set naccounts 100000 * :scale
\set aid random( 1 ,:naccounts )
\set bid random(1 ,:nbranches )
\set tid random( 1, :ntellers )
\set delta random(-5000, 5000 )
BEGIN;
UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CLOCK_TIMESTAMP());
END;





多次测试的结果:

tps 在19000 左右.


数据库冷启动后,直接压测的结果:

tps : 16000左右.