MySQLslap是mysql自带的基准测试工具,优点:查询数据,语法简单,灵活容易使用.该工具可以模拟多个客户端同时并发的向服务器发出查询更新,给出了性能测试数据而且提供了多种引擎的性能比较.msqlslap为mysql性能优化前后提供了直观的验证依据,建议系统运维和DBA人员应该掌握一些常见的压力测试工具,才能准确的掌握线上数据库支撑的用户流量上限及其抗压性等问题。
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mysqlslap 压力测试工具
MySQL自带的性能压力测试工具mysqlslap详解
1.工具详细参数
--help 显示帮助
--concurrency 代表并发数量,多个可以用逗号隔开
--engines 测试的引擎,多个用分隔符隔开
--iterations 运行这些测试多少次
--auto-generate-sql 系统自己生成的SQL脚本来测试
--auto-generate-sql-load-type 测试的是读还是写还是两者混合的（read,write,update,mixed）
--number-of-queries 总共要运行多少次查询
--debug-info 额外输出CPU以及内存的相关信息
--number-int-cols 创建测试表的 int 型字段数量
--auto-generate-sql-add-autoincrement 生成的表自动添加auto_increment列
--number-char-cols 测试表的 char 型字段数量
--create-schema 测试的database
--query 用自定义脚本执行测试
--only-print 如果只想打印看看SQL语句是什么,以用这个选项
2.测试实例(单个并发)
[root@node2 bin]# ./mysqlslap -uroot -psystem --concurrency=100 --iterations=1 --auto-generate-sql --auto-generate-sql-load-type=mixed --auto-generate-sql-add-autoincrement --engine=myisam --number-of-queries=10 --debug-info
Warning: Using a password on the command line interface can be insecure.
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.209 seconds
Minimum number of seconds to run all queries: 0.209 seconds
Maximum number of seconds to run all queries: 0.209 seconds
Number of clients running queries: 100
Average number of queries per client: 0
User time 0.02, System time 0.09
Maximum resident set size 4684, Integral resident set size 0
Non-physical pagefaults 1476, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 2797, Involuntary context switches 25
[root@node2 bin]#
说明:测试100个并发线程,测试次数1次,自动生成SQL测试脚本,读,写,更新混合测试,自增长字段,测试引擎为myisam,共运行10次查询,输出cpu资源信息
3.测试实例(多个并发)
[root@node2 bin]# ./mysqlslap --concurrency=50,100,200 --iterations=20 --number-int-cols=4 --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=read --engine=myisam,innodb --number-of-queries=200 --verbose --socket=/tmp/mysql.sock -uroot -psystem
Warning: Using a password on the command line interface can be insecure.
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.758 seconds
Minimum number of seconds to run all queries: 0.671 seconds
Maximum number of seconds to run all queries: 0.870 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.840 seconds
Minimum number of seconds to run all queries: 0.645 seconds
Maximum number of seconds to run all queries: 1.117 seconds
Number of clients running queries: 100
Average number of queries per client: 2
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.959 seconds
Minimum number of seconds to run all queries: 0.802 seconds
Maximum number of seconds to run all queries: 1.192 seconds
Number of clients running queries: 200
Average number of queries per client: 1