postgresql-10性能基准测试

本章节：基于linux系统、PostgreSQL-10单机环境下演示基准测试

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一. 测试环境准备

1. 切换到安装PostgreSQL自带的用户：postgres

su - postgres

2. 进入sql控制台

psql

接着输入数据库账户postgres的密码—[如果你没改过密码，那postgres的默认密码为postgres]
 

3. 创建名为“testbench”的测试库

create database testbench;

二. 用pgbench执行基准测试

1. 进入postgresql的bin目录

cd /usr/pgsql-10/bin

2. 按这2个参数初始化表数据：

./pgbench -i -F100 -s10 -U postgres -p 5432 -h 127.0.0.1 testbench

此时可能要输一次密码，输入数据库账户postgres的密码即可
 

3. 按这3个参数执行基准测试：1个线程、1个用户、运行60秒

./pgbench -r -j1 -c1  -T60 -U postgres -h 127.0.0.1 testbench

此时可能要输一次密码，输入数据库账户postgres的密码即可
 

三. 基准测试结果分析

starting vacuum...end.
transaction type: <builtin: TPC-B (sort of)>
scaling factor: 10
query mode: simple
number of clients: 1
number of threads: 1
duration: 60 s
number of transactions actually processed: 29383
latency average = 2.042 ms
tps = 489.714266 (including connections establishing)
tps = 489.762161 (excluding connections establishing)
script statistics:
 - statement latencies in milliseconds:
         0.003  \set aid random(1, 100000 * :scale)
         0.001  \set bid random(1, 1 * :scale)
         0.001  \set tid random(1, 10 * :scale)
         0.000  \set delta random(-5000, 5000)
         0.044  BEGIN;
         0.196  UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
         0.146  SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
         0.159  UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
         0.144  UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
         0.115  INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
         1.234  END;