用sysbench测试mysql性能
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安装sysbench:
sudo apt-get install sysbench
OLTP基准测试
在执行之前,首先需要进去mysql创建一个叫sbtest的数据库:
create database sbtest;//如果已有想删除的话,执行下面的//drop database sbtest;
然后生成我们需要用来测试的表:
sysbench --test=oltp --mysql-table-engine=innodb --oltp-table-size=1000000 --mysql-user=root --mysql-password=XXX --mysql-socket=/var/run/mysqld/mysqld.sock prepare
//这个例子才on个了8个并发进程,只读模式,测试时长60秒sysbench --test=oltp --mysql-table-engine=innodb --oltp-table-size=1000000 --mysql-user=root --mysql-password=dingjia --max-time=60 --oltp-read-only=on --max-requests=0 --num-threads=8 run
下面的是测试结果:
OLTP test statistics: queries performed: read: 811202 write: 0 other: 115886 total: 927088 transactions: 57943 (965.63 per sec.) deadlocks: 0 (0.00 per sec.) read/write requests: 811202 (13518.78 per sec.) other operations: 115886 (1931.25 per sec.)Test execution summary: total time: 60.0055s total number of events: 57943 total time taken by event execution: 479.7070 per-request statistics: min: 2.94ms avg: 8.28ms max: 37.36ms approx. 95 percentile: 10.61msThreads fairness: events (avg/stddev): 7242.8750/36.52 execution time (avg/stddev): 59.9634/0.00
其中最有价值的是:
- 总的事务数
- 每秒事务数
- 时间统计信息(最小、平均、最大响应时间、以及95%百分比响应时间)
- 线程公平统计信息(thread-fairness),用于表示模拟负载的公平性
CPU基准测试
sysbench --test=cpu --cpu-max-prime=20000 --num-threads=2 run用两个进程计算素数,结果打印出计算出素数的时间。
Maximum prime number checked in CPU test: 20000Test execution summary: total time: 13.2352s total number of events: 10000 total time taken by event execution: 26.4601 per-request statistics: min: 2.43ms avg: 2.65ms max: 13.97ms approx. 95 percentile: 2.85msThreads fairness: events (avg/stddev): 5000.0000/135.00 execution time (avg/stddev): 13.2300/0.00
I/O基准测试
首先要创建一个数据集:
sysbench --test=fileio --file-total-size=500M prepare
然后就可以针对不同类型的IO进行不同的测试:
- seqwr:顺序写入
- seqrewq:顺序重写
- seqrd:顺序读取
- rndrd:随机读取
- rndwr:随机写入
- rndrw:混合随机读写
执行命令:
sysbench --test=fileio --file-total-size=500M --file-test-mode=rndwr --init-rng=on --max-time=30 --max-requests=0 run
输出的结果包含大量的信息。和I/O子系统密切相关的包括每秒请求数和总吞吐量,另外,时间信息也是非常有用的。
sysbench 0.4.12: multi-threaded system evaluation benchmarkRunning the test with following options:Number of threads: 1Initializing random number generator from timer.Extra file open flags: 0128 files, 3.9062Mb each500Mb total file sizeBlock size 16KbNumber of random requests for random IO: 0Read/Write ratio for combined random IO test: 1.50Periodic FSYNC enabled, calling fsync() each 100 requests.Calling fsync() at the end of test, Enabled.Using synchronous I/O modeDoing random write testThreads started!Time limit exceeded, exiting...Done.Operations performed: 0 Read, 1700 Write, 2080 Other = 3780 TotalRead 0b Written 26.562Mb Total transferred 26.562Mb (906.16Kb/sec) 56.64 Requests/sec executed //每秒请求数Test execution summary: total time: 30.0168s total number of events: 1700 total time taken by event execution: 0.0147 per-request statistics: min: 0.00ms avg: 0.01ms max: 0.06ms approx. 95 percentile: 0.01msThreads fairness: events (avg/stddev): 1700.0000/0.00 execution time (avg/stddev): 0.0147/0.00
测试完成后,可以运行下面的命令来删除第一步生成的测试文件
sysbench --test=fileio --file-total-size=500M cleanup
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