PCIe固态存储和HDD常见的硬盘性能对比测试

2周测试后，导致以下结果

MySQL-OLTP测试结果：（50表。每个表1000广域网数据，1000个线程）

TPS：MySQL在PCIe固态存储上执行是在HDD上执行的5.63倍

writes：MySQL在PCIe固态存储上执行是在HDD上执行的5.58倍

reads：MySQL在PCIe固态存储上执行是在HDD上执行的5.55倍

Response_time：MySQL在PCIe固态存储上执行比在HDD上执行响应时间快44.45倍

Errors：MySQL在PCIe固态存储上执行是在HDD上执行错误率低83.5倍

随机IO測试结论：

PCIe固态存储随机读写IO处理能力是HDD随机读写IO处理能力的20倍

下面是具体測试过程

准备工作

操作系统：CentOS6.4 64位

D          B：MySQL5.6.22 64位

硬        盘：PCIe（Shannon Direct-IO 1.6TB）、HDD

測试工具：sysbench0.5

监控工具：zabix

一、安装sysbench 0.5

        sysbench 0.5相比0.4版本号的主要变化是，oltp測试结合了lua脚本。不须要改动源代码，通过自己定义lua脚本就能够实现不同业务类型的測试。

同一时候0.5相比0.4须要消耗很多其它的cpu资源。

下载sysbench源代码包

原来官网  http://sysbench.sourceforge.net 已停用。眼下sysbench代码托管在launchpad上https://launchpad.net/sysbench

更新和安装依赖包

yum -y install gcc
yum -y install libtool

安装bzrclient

yum -y install bzr

在线获取0.5的版本号,#下载到当前文件夹,文件名称为: sysbench_0.5

bzr branch lp:sysbench
cd sysbench_0.5/

执行命令：./autogen.sh，对环境进行清理

./autogen.sh

./configure  --with-mysql-includes=/usr/local/mysqla/include/ --with-mysql-libs=/usr/local/mysqla/lib/

# with-mysql-includes 指定MySQL安装文件夹

# with-mysql-libs  指定MySQL lib所在文件夹

make && make install

假设遇到下面错误

../libtool: line 841: X--tag=CC: command not found
../libtool: line 874: libtool: ignoring unknown tag : command not found
../libtool: line 841: X--mode=link: command not found
../libtool: line 1007: *** Warning: inferring the mode of operation is deprecated.: command not found
../libtool: line 1008: *** Future versions of Libtool will require --mode=MODE be specified.: command not found
../libtool: line 2234: X-g: command not found
../libtool: line 2234: X-O2: command not found
../libtool: line 1954: X-L/usr/local/mysqla/lib/: No such file or directory
../libtool: line 2403: Xsysbench: command not found
../libtool: line 2408: X: command not found
../libtool: line 2415: Xsysbench: command not found
../libtool: line 2550: X-lmysqlclient_r: command not found
../libtool: line 2550: X-lrt: command not found
../libtool: line 2550: X-lm: command not found
../libtool: line 2632: X-L/home/sysopt/src/sysbench-0.4.12/sysbench: No such file or directory
../libtool: line 2550: X-lmysqlclient_r: command not found
../libtool: line 2550: X-lrt: command not found
../libtool: line 2550: X-lm: command not found
../libtool: line 2632: X-L/home/sysopt/src/sysbench-0.4.12/sysbench: No such file or directory
../libtool: line 2550: X-lmysqlclient_r: command not found
../libtool: line 2550: X-lrt: command not found
../libtool: line 2550: X-lm: command not found

可能原因：

1、没装依赖包libtool

2、安装的版本号不正确（libtool版本号过旧）

3、其他原因

解决方法：

1、安装依赖包libtool

2、libtoo更新到新版本号

3、用autoreconf取代autogen.sh，方法例如以下:

autoreconf -i
configure
make
make install

成功安装后可通过help命令查看sysbench帮助

[root@localhost src]# sysbench --help
Missing required command argument.
Usage:
  sysbench [general-options]... --test=<test-name> [test-options]... command

General options:
  --num-threads=N             number of threads to use [1]#使用线程数量
  --max-requests=N            limit for total number of requests [10000]#请求数，默觉得10000
  --max-time=N                limit for total execution time in seconds [0]#执行时间。默觉得0表示表示不限制
  --forced-shutdown=STRING    amount of time to wait after --max-time before forcing shutdown [off]
  --thread-stack-size=SIZE    size of stack per thread [64K]
  --tx-rate=N                 target transaction rate (tps) [0]
  --report-interval=N         periodically report intermediate statistics with a specified interval in seconds. 0 disables intermediate reports [0]#0.5的新增參数（默认值0,表示禁用该功能）在指定的时间间隔报告測试信息，<span style="font-size:12px;">不用等到执行结束时再得到反馈</span>
  --report-checkpoints=[LIST,...]dump full statistics and reset all counters at specified points in time. The argument is a list of comma-separated values representing the amount of time in seconds elapsed from start of test when report checkpoint(s) must be performed. Report checkpoints are off by default. []
  --test=STRING               test to run
  --debug=[on|off]            print more debugging info [off]
  --validate=[on|off]         perform validation checks where possible [off]
  --help=[on|off]             print help and exit
  --version=[on|off]          print version and exit [off]
  --rand-init=[on|off]        initialize random number generator [off]#初始化时生成随机的数据。默认关闭
  --rand-type=STRING          random numbers distribution {uniform,gaussian,special,pareto} [special]
  --rand-spec-iter=N          number of iterations used for numbers generation [12]
  --rand-spec-pct=N           percentage of values to be treated as 'special' (for special distribution) [1]
  --rand-spec-res=N           percentage of 'special' values to use (for special distribution) [75]
  --rand-seed=N               seed for random number generator, ignored when 0 [0]
  --rand-pareto-h=N           parameter h for pareto distibution [0.2]

Log options:
  --verbosity=N      verbosity level {5 - debug, 0 - only critical messages} [3]

  --percentile=N      percentile rank of query response times to count [95]

Compiled-in tests:測试项目
  fileio - File I/O test   #磁盘IO測试
  cpu - CPU performance test  #CPU运算性能
  memory - Memory functions speed test #内存分配及传输速度
  threads - Threads subsystem performance test #POSIX线程性能
  mutex - Mutex performance test #相互排斥性能測试

Commands: prepare run cleanup help version

See 'sysbench --test=<name> help' for a list of options for each test.

二、測试

1.MySQL-OLTP測试

数据准备

[root@localhost sysbench_0.5]# sysbench --mysql-db=sbtest --num-threads=24 --mysql-engine-trx=yes --mysql-table-engine=innodb --rand-type=special --mysql-host=localhost --mysql-port=3307 --mysql-user=root --mysql-password= --mysql-socket=/data1/lib/mysql/mysql.sock
--test=sysbench/tests/db/oltp.lua --oltp_tables_count=50 --oltp-table-size=10000000 --rand-init=on prepare

參数说明：

--mysql-db：指定在哪个数据库创建測试表。默觉得sbtest库，须要提前创建好

--num-threads：使用多线程创建多表，节省准备时间

--mysql-engine-trx=yes 支持事务

--mysql-table-engine：指定存储引擎，如myisam。innodb，heap，ndbcluster，bdb，maria，falcon，pbxt 默认InnoDB

--test=tests/db/oltp.lua 表示调用 tests/db/oltp.lua 脚本进行 oltp 模式測试

--oltp_tables_count=10 表示会生成 10 个測试表

--oltp-table-size=1000000 表示每一个測试表填充数据量为 1000000

--db-driver：指定驱动，默觉得Mysql

--rand-init=on 表示每一个測试表都是用随机数据来填充的

#使用1000个线程開始測试，读写模式。

模拟 对50个表并发OLTP測试，每一个表1000万行记录，持续压測时间为 1小时

[root@localhost sysbench_0.5]# sysbench --mysql-engine-trx=yes --mysql-table-engine=innodb --mysql-host=localhost --mysql-port=3307 --mysql-user=root --mysql-password= --mysql-socket=/data1/lib/mysql/mysql.sock --test=sysbench/tests/db/oltp.lua --oltp_tables_count=50
--oltp-table-size=100000000 --num-threads=1000 --oltp-read-only=off --report-interval=10 --rand-type=uniform --max-time=3600 --max-requests=0 --percentile=95 run >>/data1/sysbench-rw.txt

參数说明

--oltp-read-only=off 表示不要进行仅仅读測试，也就是会採用读写混合模式測试

--report-interval=10 表示每10秒输出一次測试进度报告

--rand-type=uniform：数据分布模式，special表示存在热点数据，uniform表示非热点数据模式: uniform(固定),gaussian(高斯),special(特定的),pareto(帕累托)

--max-time=3600 表示最大运行时长为 3600秒

--max-requests=0 表示总请求数为 0，由于上面已经定义了总运行时长，所以总请求数能够设定为 0；也能够仅仅设定总请求数，不设定最大运行时长

--percentile=95 表示设定採样比例。默认是 95%，即丢弃5%的长请求。在剩余的95%里取最大值

可选參数：

--oltp-point-selects：在一个事务里面Point select的数量，默觉得10

--oltp-range-size：range查询的范围大小。默认100。应该小于oltp-table-size

--oltp-simple-ranges：在一个事务里面简单range查询的数量，默认1

--oltp-sum-ranges：在一个事务里面SUM range查询的数量，默认1

--oltp-order-ranges：在一个事务里面ORDER range查询的数量。默认1

--oltp-distinct-ranges：在一个事务里面DISTINCT range查询的数量，默认1

注意：我这里将測试中输出信息存放到一个文本文件中。便于用监控展示成图表形式，这样更直观

监控结果：

PCIe固态存储-IO

HDD-IO

PCIe固态存储-TPS

HDD-TPS

PCIe固态存储-writes

HDD-Writes

PCIe固态存储-reads

HDD-Reads

PCIe固态存储-Response-time

HDD-Response_time

PCIe固态存储-errors

HDD-Errors

结论：（监控參数同样的情况下--oltp_tables_count=50 --oltp-table-size=100000000 --num-threads=1000 --oltp-read-only=off --rand-type=uniform ）

TPS：MySQL在PCIe固态存储上执行是在HDD上执行的5.63倍

writes：MySQL在PCIe固态存储上执行是在HDD上执行的5.58倍

reads：MySQL在PCIe固态存储上执行是在HDD上执行的5.55倍

Response_time：MySQL在PCIe固态存储上执行比在HDD上执行响应时间快44.45倍

Errors：MySQL在PCIe固态存储上执行是在HDD上执行错误率低83.5倍

2、随机IO測试（这里就不再上图了）

数据准备（创建70G文件）注意：文件大小须要大于内存大小

sysbench --test=fileio --file-total-size=70G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 prepare

測试阶段

sysbench --test=fileio --file-total-size=70G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run

清楚測试数据

sysbench --test=fileio --file-total-size=70G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 clean

随机读写混合

PCIe固态存储

Operations performed:  1789098 reads, 1192732 writes, 3816704 Other= 6798534 Total

Read 27.299Gb  Written 18.2Gb  Total transferred 45.499Gb  (155.3Mb/sec)

9939.43 Requests/sec executed

General statistics:

total time:                         300.0001s

total number of events:             2981830

total time taken by event execution: 214.9376s

response time:

min:                                 0.00ms

avg:                                 0.07ms

max:                                 7.26ms

approx.  95 percentile:               0.23ms

Threads fairness:

events (avg/stddev):          2981830.0000/0.00

execution time (avg/stddev):  214.9376/0.00

HDD

Operations performed:  85851 reads, 57234 writes, 183040 Other =326125 Total

Read 1.31Gb Written 894.28Mb  Totaltransferred 2.1833Gb  (7.4523Mb/sec)

476.95 Requests/sec executed

General statistics:

total time:                          300.0024s

total number of events:             143085

total time taken by event execution: 291.8164s

response time:

min:                                 0.01ms

avg:                                 2.04ms

max:                               170.33ms

approx.  95 percentile:               5.22ms

Threads fairness:

events (avg/stddev):          143085.0000/0.00

execution time (avg/stddev):  291.8164/0.00

随机写

PCIe固态存储

Operations performed:  0 reads, 10441500 writes, 13365074 Other =23806574 Total

Read 0b Written 159.32Gb  Totaltransferred 159.32Gb  (271.91Mb/sec)

17402.24 Requests/sec executed

General statistics:

total time:                         600.0090s

total number of events:             10441500

total time taken by event execution: 168.8168s

response time:

min:                                 0.00ms

avg:                                 0.02ms

max:                                  0.71ms

approx.  95 percentile:               0.02ms

Threads fairness:

events (avg/stddev):          10441500.0000/0.00

execution time(avg/stddev):   168.8168/0.00

HDD

Operationsperformed:  0 reads, 427200 writes,546689 Other = 973889 Total

Read 0b  Written 6.5186Gb  Total transferred 6.5186Gb  (11.125Mb/sec)

712.00 Requests/sec executed

Generalstatistics:

total time:                          600.0002s

total number of events:              427200

total time taken by event execution:10.5053s

response time:

min:                                  0.01ms

avg:                                  0.02ms

max:                                 29.30ms

approx.  95 percentile:               0.03ms

Threadsfairness:

events (avg/stddev):           427200.0000/0.00

execution time (avg/stddev):   10.5053/0.00

随机读

PCIe固态存储

Operationsperformed:  3898994 reads, 0 writes, 0Other = 3898994 Total

Read59.494Gb  Written 0b  Total transferred 59.494Gb  (203.07Mb/sec)

12996.64Requests/sec executed

Generalstatistics:

total time:                          300.0001s

total number of events:              3898994

total time taken by event execution:294.7603s

response time:

min:                                  0.00ms

avg:                                  0.08ms

max:                                 30.09ms

approx.  95 percentile:               0.24ms

Threadsfairness:

events (avg/stddev):           3898994.0000/0.00

execution time (avg/stddev):   294.7603/0.00

HDD

Operationsperformed:  131643 reads, 0 writes, 0Other = 131643 Total

Read2.0087Gb  Written 0b  Total transferred 2.0087Gb  (6.8564Mb/sec)

438.81 Requests/sec executed

Generalstatistics:

total time:                          300.0014s

total number of events:              131643

total time taken by event execution:299.7703s

response time:

min:                                  0.00ms

avg:                                  2.28ms

max:                                121.94ms

approx.  95 percentile:               5.34ms

Threadsfairness:

events (avg/stddev):           131643.0000/0.00

execution time (avg/stddev):   299.7703/0.00

结论：

PCIe固态存储随机读写IO处理能力是HDD随机读写IO处理能力的20倍

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