环境介绍:

centos5.4

[root@26 super-smack-1.3]# uname -a

Linux 26 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

1.前提步骤

1 yum-y install mysql-devel2 yum-y install flex3 yum-y install byacc4 yum-y install bison

2.安装super-smack

1 //vegan.net/tony/supersmack/super-smack-1.3.tar.gz

2 tar zxvf super-smack-1.3.tar.gz3 cd super-smack-1.34 LIBZ_LIB="-lm"5 ./configure--prefix=/usr/local/super-smack--with-mysql--with-mysql-lib=/usr/local/mysql/lib/mysql/--with-mysql-include=/usr/local/mysql/include/mysql/--with-datadir=/usr/local/super-smack/smack-data/6 make7 make install

会遇到下面错误：

解决办法：

修改文件super-smack-1.3/src/query.cc

第193行：

< int len = 0, num_recs = 0;

修改成：

> long len = 0; int num_recs = 0;

第199,200行

< int str_len = (*i).first.length();

< if((unsigned)p + str_len + 3 *sizeof(int) < (unsigned)p_end )

修改成：

> long str_len = (*i).first.length();

> if((long)p + str_len + 3 *sizeof(int) < (long)p_end )

第219行

< len = (unsigned)p - (unsigned)buf;

修改成：

> len = (long)p - (long)buf;

附改造后的文件：

3.下面就来看看如何使用吧

测试命令

super-smack -d mysql select-key.smack n m

其中super-smack近似于一个解释执行器，解释执行select-key.smack中的内容，n为该次测试的并发线程数，m为每个线程执行数据库操作的次数

smack文件，近似于一个c源文件，详细包含以下几个内容

1.client，定义始于毗连用到的参量，包孕host，user，passwd，port，socket。包孕两种client，admin client和普通client，admin需要具有办理职权范围，需要始于表以及load数据等操作

2.表定义，自定义测试表的表结构，需要指定由哪个client始于表，以及表的记载数，以及填充数据文件的位置，如果数据文件不存在，需要天生数据文件，可以自定义数据天生剧本

3.dictionary，定义了一批可选的字段，源码实现患上比较简略，只供给了几种next要领，读取下一行数据，如果改行数据用逗点分隔，只取第一个逗点前的字段，其他符号分隔则取整行数据。所以如果一个查询里有几个字段需要从外部获取数据，就应该始于几个dictionary

4.查询，可以自定义查询的语句，查询类型(主要用于分类计数的作用)，查询语句也可以为更新操作，如update。如果是查询语句，has_result_set选项应该定义为y，否则会出现Commands out of sync错误，感觉这里是super-smack的一个bug

5.main，测试运行的入口，一般改动不大，主要是一些client名称的改动

测试历程中始于的毗连数包含：

1.表数据分析毗连(select count(*) from test_table)，判断表是不是已经装载了数据

2.线程数，每个线程执行的查询都只打开一个毗连，与执行的次数以及每个线程执行的几多条语句无关

我们到安装路径看下，

[root@sunss-26 ~]# ll /usr/local/super-smack/bin/

gen-data     super-smack

有连个命令，从名字我们就可以看出gen-data是用来生成测试数据的，我们使用帮助命令看下：

[root@sunss-26 ~]# gen-data --help

gen-data version 1.1

MySQL AB, by Sasha Pachev

Prints lines random data to stdout in given format

Usage: gen-data [options]

-?, --help - this message

-V, --version - show version

-n, --num-rows=num - number of rows

-f, --format=fmt_str - format string

Format can contain any character + % followed by

a format specifier. Valid format specifiers:

s - string

d - integer

Additionally, you can prefix a format speficier with:

n - generate exactly n characters

m-n - generate between m and n  characters

命令及参数都简单易懂：

-n选项：指定生成数据行的行数

-f选项：指定格式字符串

例如：

gen-data -n 90000 -f %12-12s%n,%25-25s,%n,%d>words.data

[root@sunss-26 ~]# super-smack --help

super-smack version 1.1

MySQL AB, by Sasha Pachev and Jeremy Cole

Runs multi-threaded benchmarks on database engines.

The following engines are supported:

Id      Handle          Name            Version         Author

--      ------          ----            -------         ------

1       mysql           MySQL           1.0             Sasha Pachev

Usage: super-smack [options] [smack_source]

Valid options are:  -h, --help               Display this message

-V, --version            Show version

-d, --db-type=handle     Select database type

-D, --datadir=path       Path to super-smack datadir

[root@sunss-26 ~]#

现在命令所在路径是：/usr/local/super-smack/bin/super-smack，如果不想输入路径的话，添加一个连接：

ln -s /usr/local/super-smack/bin/super-smack /usr/bin/super-smack

我们在数据库里建一个表：

1 CREATETABLE`http_auth` (2 `username`char(255)NOTNULL,3 `pass`char(25)DEFAULTNULL,4 `uid`int(11)DEFAULTNULL,5 `gid`int(11)DEFAULTNULL,6 PRIMARYKEY(`username`)7 ) ENGINE=MyISAMDEFAULTCHARSET=utf8;

导入数据：

1.mysqlimport -L -usmack -psmack -h192.168.0.26 smack /var/smack-data/http_auth.dat

2.在mysql命令行，执行 Loading data from file '/var/smack-data/http_auth.dat' into table 'http_auth' terminated by ','

测试结果

输出的结果较为简略，只包含了查询的次数，最大耗时，最小耗时，每秒执行的查询,会按照查询类型进行分类计数之后输出

附修改后的select-key.smack文件：

代码

1 //this is will be used in the table section2 client"admin"3 {4 user"root";5 host"192.168.0.24";6 db"test";7 pass"123456";8 port"3306";9 //socket"/tmp/mysql.sock";//this only applies to MySQL and is10 //ignoredforPostgreSQL11 }12 13 //ensure the tableexistsand meets the conditions14 table"http_auth"15 {16 client"admin";//connectwith this client17 //ifthe table is not found or does not pass the checks,create it18 //with the following,dropping the old oneifneeded19 create"create table http_auth20 (username char(25) not null primary key,21 pass char(25),22 uid integer not null,23 gid integer not null24 )";25 min_rows"90000";//the table must have at least that many rows26 data_file"words.dat";//ifthe table is empty,load the data from27 //this file28 gen_data_file"gen-data -n 90000 -f %12-12s%n,%25-25s,%n,%d";29 //ifthe file above does not exist,generate it with the above shell command30 //you can replace this command with anything that prints comma-delimited31 //data to stdout,just make sure you have the right number of columns32 }33 34 35 //define a dictionary36 dictionary"word"37 {38 type"rand";//words are retrieved in random order39 source_type"file";//words come from a file40 source"words.dat";//file location41 delim",";//take the part of the line before,42 file_size_equiv"45000";//ifthe file is greater than this43 //divive the real file size by this value obtaining N and take every Nth44 //line skipping others.This is needed to be able to target a wide key45 //range without using up too much memory with testkeys46 }47 48 //define a query49 query"select_by_username"50 {51 query"select * from http_auth where username = '$word'";52 //$wordwill be substitute with thereadfrom the'word'dictionary53 type"select_index";54 //query stats will be grouped by type55 has_result_set"y";56 //the query is expected toreturna result set57 parsed"y";58 //the query string should be first processed by super-smack todo59 //dictionary substitution60 }61 62 //define database client type63 client"smacker1"64 {65 user"root";//connectas this user66 pass"123456";//usethis password67 host"192.168.0.24";//connectto this host68 db"test";//switch to this database69 port"3306";70 //socket"/tmp/mysql.sock";//this only applies to MySQL and is71 //ignoredforPostgreSQL72 query_barrel"2 select_by_username";//oneachround,73 //run select_by_username query2times74 }75 76 main77 {78 smacker1.init();//initialize the client79 smacker1.set_num_rounds($2);//second arg on the command line defines80 //the number of roundsforeachclient81 smacker1.create_threads($1);82 //first argument on the command line defines how many client instances83 //tofork.Anything after this will be done onceforeachclientuntil84 //you collect the threads85 smacker1.connect();86 //you mustconnectafter youfork87 smacker1.unload_query_barrel();//foreachclient fire the query barrel88 //it will nowdothe number of rounds specified by set_num_rounds()89 //oneachround,query_barrel of the client is executed90 91 smacker1.collect_threads();92 //the master thread waitsforthe children,eachchild reports the stats93 //the stats are printed94 smacker1.disconnect();95 //the children now disconnect andexit96 }97