pgbench –help
初始化选项：
-i 调用初始化模式
-F NUM 填充因子
-s NUM 规模因子（与产生数据量大小有关）
Benchmarking选项：
-c NUM 数据库客户端并发数（默认：1）
-C （为每个事务建立新的连接）
-Ｄ VARNAME=VALUE 通过客户脚本为用户定义变量
-f FILENAME 从文件FILENAME读取事务脚本
-j NUM 线程数（默认：1）
-i 写事务时间到日志文件
-M{simple|extended|prepared} 给服务器提交查询的协议
-n 在测试之前不运行VACUUM
-N 不更新表“pgbench_tellers” “pgbench_branches”
-r 报告每条命令的平均延迟
-s NUM 在输出中报告规模因子
-S 执行 SELECT-only事务
-t NUM 每个客户端运行的事务数（默认：10）
-T NUM benchmark测试时间（单位：秒）
-v 在测试前清空所有的四个标准表
常用选项：
-d 输出打印调试信息
-h HOSTNAME 数据库服务器主机或socket 目录
-U USERNAME 指定数据库用户的连接
--help 显示帮助信息，然后退出
--version 输出版本信息，然后退出
生成数据
postgres=# create user benchmarksql with superuser password '123456';
CREATE ROLE
postgres=# create database benchmarksql owner benchmarksql;
CREATE DATABASE
[postgres@DELL-R720 bin]$ ./pgbench -i -F 100 -s 714 -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql #10GB dataset
[postgres@DELL-R720 bin]$ ./pgbench -i -F 100 -s 1428 -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql #20GB dataset
[postgres@DELL-R720 bin]$ ./pgbench -i -F 100 -s 5712 -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql #80GB dataset
[postgres@DELL-R720 bin]$ ./pgbench -i -F 100 -s 11424 -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql #160GB dataset
连接的数据
[postgres@DELL-R720 bin]$ ./psql -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql
查看数据库大小
select pg_database_size('benchmarksql')/1024/1024/1024|| 'GB';
or
select pg_size_pretty(pg_database_size('benchmarksql'));
开始测试
[postgres@DELL-R720 bin]$ ./pgbench -c 10 –j –t -r -T 1800 -h 127.0.0.1 -p 6432 -U benchmarksql
transaction type: TPC-B (sort of)
scaling factor: 1428
query mode: prepared
number of clients: 10
number of threads: 10
duration: 1800 s
number of transactions actually processed: 1294479
latency average: 13.905 ms
tps = 715.507310 (including connections establishing)
tps = 715.510043 (excluding connections establishing)
statement latencies in milliseconds:
0.002768 set nbranches 1 * :scale
0.000647 set ntellers 10 * :scale
0.000562 set naccounts 100000 * :scale
0.000823 setrandom aid 1 :naccounts
0.000640 setrandom bid 1 :nbranches
0.000684 setrandom tid 1 :ntellers
0.000615 setrandom delta -5000 5000
0.054656 BEGIN;
6.063291 UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
0.092079 SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
2.897447 UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
2.026997 UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
1.640868 INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
1.184043 END;
[postgres@DELL-R720 bin]$ ./pgbench -c 20 -j 20 -M prepared -n -s 1428 -T 1800 -r -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql
transaction type: TPC-B (sort of)
scaling factor: 1428
query mode: prepared
number of clients: 20
number of threads: 20
duration: 1800 s
number of transactions actually processed: 1503569
latency average: 23.943 ms
tps = 829.034591 (including connections establishing)
tps = 829.038294 (excluding connections establishing)
statement latencies in milliseconds:
0.003509 set nbranches 1 * :scale
0.001146 set ntellers 10 * :scale
0.000805 set naccounts 100000 * :scale
0.001075 setrandom aid 1 :naccounts
0.000881 setrandom bid 1 :nbranches
0.000874 setrandom tid 1 :ntellers
0.000881 setrandom delta -5000 5000
0.077150 BEGIN;
9.083130 UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
0.123980 SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
6.025891 UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
3.595181 UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
3.098900 INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
2.098509 END;
transaction type: TPC-B (sort of)
scaling factor: 1428
query mode: prepared
number of clients: 30
number of threads: 10
duration: 1800 s
number of transactions actually processed: 1468864
latency average: 36.763 ms
tps = 815.178087 (including connections establishing)
tps = 815.184313 (excluding connections establishing)
statement latencies in milliseconds:
0.003654 set nbranches 1 * :scale
0.001164 set ntellers 10 * :scale
0.001123 set naccounts 100000 * :scale
0.001288 setrandom aid 1 :naccounts
0.001202 setrandom bid 1 :nbranches
0.001106 setrandom tid 1 :ntellers
0.001129 setrandom delta -5000 5000
0.154459 BEGIN;
13.228743 UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
0.212691 SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
9.070507 UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
4.904218 UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
5.595383 INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
3.612066 END;
[postgres@DELL-R720 bin]$ ./pgbench -c 50 -j 50 -M prepared -n -s 1428 -T 1800 -r -h 127.0.0.1 -p 6432 -U benchmarksql benchmarksql
transaction type: TPC-B (sort of)
scaling factor: 1428
query mode: prepared
number of clients: 50
number of threads: 50
duration: 1800 s
number of transactions actually processed: 1641175
latency average: 54.839 ms
tps = 901.460449 (including connections establishing)
tps = 901.475075 (excluding connections establishing)
statement latencies in milliseconds:
0.005079 set nbranches 1 * :scale
0.001588 set ntellers 10 * :scale
0.001257 set naccounts 100000 * :scale
0.001768 setrandom aid 1 :naccounts
0.001328 setrandom bid 1 :nbranches
0.001424 setrandom tid 1 :ntellers
0.001316 setrandom delta -5000 5000
0.256724 BEGIN;
19.791906 UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
0.284488 SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
13.638615 UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
8.232851 UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
7.664059 INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
5.561957 END;