sysbench是一款压力测试工具，可以测试系统的硬件性能，也可以用来对数据库进行基准测试。
安装方式：https://github.com/akopytov/sysbench/blob/master/README.md#general-command-line-options
此处安装的是sysbench 1.0.6版本，和网上大部分的0.4，0.5版本的命令不太一样。
sysbench支持三种测试方案：
1、使用自带的测试模块，如对cpu,I/O,memory等的测试。
2、使用自带的lua脚本进行测试，如果使用快速安装的方式，默认的脚本路径为：/usr/share/sysbench
3、使用自定义的lua脚本。
获取帮助信息：
如果对相关模块或者脚本的参数不明确的，可以使用 sysbench testname help来查看，testname含模块名称和脚本名称。
sysbench经典测试命令：
prepare: 创建测试数据或者相关的测试文件，为测试做准备工作。如数据库的测试数据准备等。run: 开始执行测试。cleanup: 移除测试数据help: 帮助命令
测试CPU性能
sysbench cpu --cpu-max-prime=10000 run #显示测试结果 General statistics: total time: 10.0003s total number of events: 8692 Latency (ms): min: 1.12 avg: 1.15 max: 2.98 95th percentile: 1.25 sum: 9996.64 Threads fairness: events (avg/stddev): 8692.0000/0.00 execution time (avg/stddev): 9.9966/0.00
I/O测试
准备测试数据：
sysbench fileio --file-total-size=40G prepare
运行顺序写入测试：
sysbench fileio --file-total-size=40G --file-test-mode=seqwr run #测试结果 File operations: reads/s: 0.00 writes/s: 3916.87 fsyncs/s: 5001.01 Throughput: read, MiB/s: 0.00 written, MiB/s: 61.20 General statistics: total time: 10.0055s total number of events: 89250 Latency (ms): min: 0.01 avg: 0.11 max: 28.02 95th percentile: 0.12 sum: 9937.24 Threads fairness: events (avg/stddev): 89250.0000/0.00 execution time (avg/stddev): 9.9372/0.00
运行顺序重写测试：
sysbench fileio --file-total-size=40G --file-test-mode=seqrewr run #测试结果： File operations: reads/s: 0.00 writes/s: 4018.65 fsyncs/s: 5131.38 Throughput: read, MiB/s: 0.00 written, MiB/s: 62.79 General statistics: total time: 10.0003s total number of events: 91531 Latency (ms): min: 0.00 avg: 0.11 max: 31.45 95th percentile: 0.10 sum: 9933.80 Threads fairness: events (avg/stddev): 91531.0000/0.00 execution time (avg/stddev): 9.9338/0.00
混合随机读/写：（如果执行出错，需要重新prepare数据）
sysbench fileio --file-total-size=40G --file-test-mode=rndrw --max-time=100 --max-requests=0 run #测试结果： File operations: reads/s: 338.98 writes/s: 225.99 fsyncs/s: 722.23 Throughput: read, MiB/s: 5.30 written, MiB/s: 3.53 General statistics: total time: 100.0007s total number of events: 128727 Latency (ms): min: 0.00 avg: 0.78 max: 43.01 95th percentile: 2.97 sum: 99785.92 Threads fairness: events (avg/stddev): 128727.0000/0.00 execution time (avg/stddev): 99.7859/0.00
清除测试数据：
sysbench fileio --file-total-size=40G cleanup
OLTP基准测试
OLTP基准测试模拟了一个简单的事务处理系统的工作负载。若要对数据库性能进行测试就要使用OLTP相关的脚本。
在/usr/share/sysbench/目录下有相关的lua脚本：
bulk_insert.lua oltp_common.lua oltp_delete.lua oltp_insert.lua oltp_point_select.lua oltp_read_only.lua oltp_read_write.lua oltp_update_index.lua oltp_update_non_index.lua oltp_write_only.lua select_random_points.lua select_random_ranges.lua
对于未知的测试参数，可以通过 sysbench scripts-name help 来查看。
创建测试数据：
sysbench oltp_common --table-size=1000000 --db-driver=mysql \ --mysql-db=test --mysql-user=root --mysql-password=123456 prepare Creating table 'sbtest1'... Inserting 1000000 records into 'sbtest1' Creating a secondary index on 'sbtest1'...
执行run命令进行测试：（只读）
sysbench oltp_read_only --table-size=1000000 --db-driver=mysql \ --mysql-db=test --mysql-user=root --mysql-password=123456 --time=60 --max-requests=0 --threads=8 run #测试结果 Running the test with following options: Number of threads: 8 Initializing random number generator from current time Initializing worker threads... Threads started! SQL statistics: queries performed: read: 1679174 write: 0 other: 239882 total: 1919056 transactions: 119941 (1998.81 per sec.) queries: 1919056 (31980.95 per sec.) ignored errors: 0 (0.00 per sec.) reconnects: 0 (0.00 per sec.) General statistics: total time: 60.0047s total number of events: 119941 Latency (ms): min: 0.32 avg: 4.00 max: 56.17 95th percentile: 8.13 sum: 479830.78 Threads fairness: events (avg/stddev): 14992.6250/116.75 execution time (avg/stddev): 59.9788/0.00
除了使用read_only测试，我们还可以测试数据库的写性能：
sysbench oltp_write_only --table-size=1000000 --db-driver=mysql \ --mysql-db=test --mysql-user=root --mysql-password=123456 --time=60 --max-requests=0 --threads=8 run #测试结果 SQL statistics: queries performed: read: 0 write: 83764 other: 41882 total: 125646 transactions: 20941 (348.93 per sec.) queries: 125646 (2093.56 per sec.) ignored errors: 0 (0.00 per sec.) reconnects: 0 (0.00 per sec.) General statistics: total time: 60.0120s total number of events: 20941 Latency (ms): min: 4.92 avg: 22.92 max: 5518.27 95th percentile: 69.29 sum: 479968.99 Threads fairness: events (avg/stddev): 2617.6250/17.87 execution time (avg/stddev): 59.9961/0.00
上面的结果中包含了很多的信息，其中重点需要我们关注的信息是：
1、总的事务数 （total number of events）
2、每秒事务数
3、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）
4、线程公平性统计信息，表示负载的公平性。（thread-fairness)
清理测试数据：
sysbench oltp_read_only --table-size=1000000 --db-driver=mysql \ --mysql-db=test --mysql-user=root --mysql-password=123456 cleanup