01：Sysbench 基准压测 IO篇

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• line：V1.1
• mail： gczheng@139.com
• date： 2017-11-17

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一、Sysench测试前准备

1.1、压测环境

配置	信息
主机	Dell PowerEdge R730xd
CPU	24 * Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
内存	64G (16G * 4)
RAID	RAID1
硬盘	7.2K RPM, 6000G SAS, 12G/s
文件系统	ext4
系统	Red Hat Enterprise Linux Server release 7.3 (Maipo)
内核	3.10.0-514.el7.x86_64
Sysbench	1.1.0-0167e45

1.2、压测基准值

Tools	sysbench
time（sec）	180
events	100000000
threads	24
file-total-size	128G
file-test-mode	rndrw（随机读写）、rndwr（随机写）、rndrd （随机读）
file-extra-flags	O_DIRECT
file-fsync-freq	0
file-block-size	16K

二、进行OLTP_IO测试

2.1、安装压测工具sysbench

• 标准安装

[root@localhost-m(252) /r2/soft/dbtest] curl -s https://packagecloud.io/install/repositories/akopytov/sysbench/script.rpm.sh | sudo bash &&
sudo yum -y install sysbench

2.2、执行压测

• 2.2.1 创建128个表，并发线程数24个，总数据量128G

[root@localhost-m(252) /r2/soft/sysbench]# sysbench  --threads=24 --test=fileio --file-total-size=128G --file-test-mode=rndrw prepare
WARNING: the --test option is deprecated. You can pass a script name or path on the command line without any options.
sysbench 1.1.0-0167e45 (using bundled LuaJIT 2.1.0-beta3)

128 files, 1048576Kb each, 131072Mb total
Creating files for the test...
Extra file open flags: 0
Creating file test_file.0
......
Creating file test_file.127

• 2.2.2 进行fileio(rndrw随机读写)测试

[root@localhost-m(252) /r2/soft/sysbench]# sysbench fileio \
> --time=180 \
> --events=100000000 \
> --threads=24 \
> --file-total-size=128G \
> --file-test-mode=rndrw \
> --file-num=128 \
> --file-extra-flags=direct \
> --file-fsync-freq=0 \
> --file-block-size=16384 \
> run
sysbench 1.1.0-0167e45 (using bundled LuaJIT 2.1.0-beta3)

Running the test with following options:
Number of threads: 24
Initializing random number generator from current time

Extra file open flags: 3
128 files, 1GiB each
128GiB total file size
Block size 16KiB
Number of IO requests: 100000000
Read/Write ratio for combined random IO test: 1.50
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test
Initializing worker threads...

Threads started!

Throughput:
         read:  IOPS=334.56 5.23 MiB/s (5.48 MB/s)
         write: IOPS=223.03 3.48 MiB/s (3.65 MB/s)
         fsync: IOPS=0.00

Latency (ms):
         min:                                  0.18
         avg:                                 42.99
         max:                               1329.63
         95th percentile:                    189.93
         sum:                            4320920.09

• 2.2.3 进行fileio(rndwr随机写)测试

[root@localhost-m(252) /r2/soft/sysbench]# sysbench fileio --time=180 --events=100000000 --threads=24 --file-total-size=128G --file-test-mode=rndwr --file-num=128 --file-extra-flags=direct--file-fsync-freq=0 --file-block-size=16384 run
sysbench 1.1.0-0167e45 (using bundled LuaJIT 2.1.0-beta3)

Running the test with following options:
Number of threads: 24
Initializing random number generator from current time

Extra file open flags: 3
128 files, 1GiB each
128GiB total file size
Block size 16KiB
Number of IO requests: 100000000
Read/Write ratio for combined random IO test: 1.50
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random write test
Initializing worker threads...

Threads started!

Throughput:
         read:  IOPS=0.00 0.00 MiB/s (0.00 MB/s)
         write: IOPS=389.35 6.08 MiB/s (6.38 MB/s)
         fsync: IOPS=0.00

Latency (ms):
         min:                                  0.16
         avg:                                 61.63
         max:                               1361.51
         95th percentile:                    108.68
         sum:                            4320453.91

• 2.2.4 进行fileio(rndrd随机读)测试

[root@localhost-m(252) /r2/soft/sysbench]# sysbench fileio --time=180 --events=100000000 --threads=24 --file-total-size=128G --file-test-mode=rndrd --file-num=128 --file-extra-flags=direct--file-fsync-freq=0 --file-block-size=16384 run
sysbench 1.1.0-0167e45 (using bundled LuaJIT 2.1.0-beta3)

Running the test with following options:
Number of threads: 24
Initializing random number generator from current time

Extra file open flags: 3
128 files, 1GiB each
128GiB total file size
Block size 16KiB
Number of IO requests: 100000000
Read/Write ratio for combined random IO test: 1.50
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random read test
Initializing worker threads...

Threads started!

Throughput:
         read:  IOPS=697.23 10.89 MiB/s (11.42 MB/s)
         write: IOPS=0.00 0.00 MiB/s (0.00 MB/s)
         fsync: IOPS=0.00

Latency (ms):
         min:                                  0.41
         avg:                                 34.41
         max:                                737.43
         95th percentile:                    114.72
         sum:                            4320295.10

2.3、 执行结果

• 分别进行rndrw（随机读写）、rndwr（随机写）、rndrd （随机读）各3分钟，如图R2目录（/dev/sdl）IOPS:
  • rndrw（随机读写）平均读iops：334，平均写iops：223
  • rndwr（随机写）平均写iops：389.35
  • rndwr（随机读）平均读iops：697.23

2.4、 清除生成的数据

[root@localhost-m(252) /r2/soft/sysbench]# sysbench  --threads=24 --test=fileio --file-total-size=128G --file-test-mode=rndrw cleanup
WARNING: the --test option is deprecated. You can pass a script name or path on the command line without any options.
sysbench 1.1.0-0167e45 (using bundled LuaJIT 2.1.0-beta3)

Removing test files...