sysbench对数据库进行压力测试-创新互联

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。

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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,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

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