小型的mysql测试工具，主要有自带的mysqlslap、super-smack和mybench。嗯，我这里的小型的意思是指工具安装过程简单。mysqlslap的使用方法遍地都是，就不先详细写了。根据个人偏好写写mybench吧，毕竟是perl的。安装很简单，如下： cpanm DBI DBD::mysql Tim
小型的mysql测试工具，主要有自带的mysqlslap、super-smack和mybench。嗯，我这里的小型的意思是指工具安装过程简单。 mysqlslap的使用方法遍地都是，就不先详细写了。根据个人偏好写写mybench吧，毕竟是perl的。 安装很简单，如下：
cpanm DBI DBD::mysql Time::HiRes wget http://jeremy.zawodny.com/mysql/mybench/mybench-1.0.tar.gz tar zxvf mybench-1.0.tar.gz cd mybench-1.0 perl MakeFile.PL && make && make install
但是使用就不是太简单了——mysqlslap会自己生成（-a选项）sql，super-smack则带了一个gen-data程序生成数据然后自动导入，但是mybench没有，所以只能自己搞定数据。 不过mybench还是自己生成了一个测试模版的脚本在/usr/bin/bench_example，很简单的就知道怎么做了。 example如下：
#!/usr/bin/perl -w
eval 'exec /usr/bin/perl -w -S $0 ${1+"$@"}'
if 0; # not running under some shell
use strict;
use MyBench;
use Getopt::Std;
use Time::HiRes qw(gettimeofday tv_interval);
use DBI;
my %opt;
Getopt::Std::getopt('n:r:h:', \%opt);
#这是我见过的最hardcode的perl脚本了（呃，除了我自己写的垃圾），连db库、用户名、密码都不给运行参数的
my $num_kids = $opt{n} || 10;
my $num_runs = $opt{r} || 100;
my $db = "test";
my $user = "test";
my $pass = "";
my $port = 3306;
my $host = $opt{h} || "192.168.0.1";
my $dsn = "DBI:mysql:$db:$host;port=$port";
my $callback = sub
{
my $id = shift;
my $dbh = DBI->connect($dsn, $user, $pass, { RaiseError => 1 });
#为测试准备的请求，测select就写select，测insert就写insert呗~
#如果不修改，也就是说测试用的是test.mytable表，而且必须有一个列叫id
my $sth = $dbh->prepare("SELECT * FROM mytable WHERE ID = ?");
my $cnt = 0;
my @times = ();
## wait for the parent to HUP me
local $SIG{HUP} = sub { };
sleep 600;
#脚本定义的每个进程执行多少次请求
while ($cnt < $num_runs)
{
my $v = int(rand(100_000));
## time the query
my $t0 = [gettimeofday];
#真正的执行sql请求，通过上面的rand知道，之前准备的test.mytable的id列必须是int格式，同时不少于10w行（又一处hard）
$sth->execute($v);
#通过前后两次gettimeofday获得sql的exec耗时
my $t1 = tv_interval($t0, [gettimeofday]);
#完成一次请求执行，加入数组
push @times, $t1;
$sth->finish();
$cnt++;
}
## cleanup
$dbh->disconnect();
#计算本进程全部请求的各项数据，几个大小和均来自MyBench模块
my @r = ($id, scalar(@times), min(@times), max(@times), avg(@times), tot(@times));
return @r;
};
#将上面这个函数交给MyBench模块的fork_and_work执行，即并发指定数量请求，返回总的结果
my @results = MyBench::fork_and_work($num_kids, $callback);
#计算总的数据
MyBench::compute_results('test', @results);
exit;
__END__
然后看看/usr/lib/perl5/site_perl/5.8.8/mybench.pm，主要内容就是fork和compute：
package MyBench;
use strict;
$main::VERSION = '1.0';
use Exporter;
@MyBench::ISA = 'Exporter';
#导出求最大值、最小值、平均值、综合值的函数给外面用
@MyBench::EXPORT = qw(max min avg tot);
sub fork_and_work($$)
{
#关闭输出缓冲
$|=1;
use strict;
use IO::Pipe;
use IO::Select;
$SIG{CHLD} = 'IGNORE'; ## let the kids die
my $kids_to_fork = shift;
my $callback = shift;
my $num_kids = 0;
my @pipes = ();
my @pids = ();
my $pid = undef;
print "forking: ";
while ($num_kids < $kids_to_fork)
{
#用IO::Pipe管道方式来传递父子进程的信息
my $pipe = new IO::Pipe;
#fork进程开始
if ($pid = fork())
{
## parent
$num_kids++;
#每fork完成一个打印一个+号
print "+";
#从管道中读取数据
$pipe->reader();
push @pipes, $pipe;
push @pids, $pid;
}
elsif (defined $pid)
{
## child
#打开管道写入数据的功能
$pipe->writer();
#执行select_example脚本传入的mysql请求测试函数
my @result = $callback->($num_kids);
#把结果写入管道
print $pipe "@result\n";
#关闭管道
$pipe->close();
exit 0;
}
else
{
print "fork failed: $!\n";
}
}
print "\n";
## give them a bit of time to setup
my $time = int($num_kids / 10) + 1;
print "sleeping for $time seconds while kids get ready\n";
sleep $time;
#发送SIGHUP信号给callback函数
kill 1, @pids;
## collect the results
my @results;
print "waiting: ";
#从管道中读取数据到数组
for my $pipe (@pipes)
{
my $data = <$pipe>;
push @results, $data;
$pipe->close();
print "-";
}
print "\n";
return @results;
}
sub compute_results(@)
{
my $name = shift;
my $recs = 0;
my ($Cnt, $Min, $Max, $Avg, $Tot, @Min, @Max);
while (@_)
{
## 6 elements per record
my $rec = shift; chomp $rec;
my ($id, $cnt, $min, $max, $avg, $tot) = split /\s+/, $rec;
$Cnt += $cnt;
$Avg += $avg;
$Tot += $tot;
push @Min, $min;
push @Max, $max;
$recs++;
}
$Avg = $Avg / $recs;
$Min = min(@Min);
$Max = max(@Max);
my $Qps = $Cnt / ($Tot / $recs);
print "$name: $Cnt $Min $Max $Avg $Tot $Qps\n";
print " clients : $recs\n";
print " queries : $Cnt\n";
print " fastest : $Min\n";
print " slowest : $Max\n";
print " average : $Avg\n";
print " serial : $Tot\n";
print " q/sec : $Qps\n";
}
## some numerical helper functions for arrays
sub max
{
my $val = $_[0];
for (@_)
{
if ($_ > $val) { $val = $_; }
}
return $val;
}
sub min
{
my $val = $_[0];
for (@_)
{
if ($_ < $val) { $val = $_; }
}
return $val;
}
sub avg
{
my $tot;
for (@_) { $tot += $_; }
return $tot / @_;
}
sub tot
{
my $tot;
for (@_) { $tot += $_; }
return $tot;
}
1;
好了，开始准备数据，比较懒，直接用super-smack的gen-data先出了一些./gen-data -n 100000 -f %n,%80-12s%12n,%512-512s,%d > /root/data，然后进mysql里执行：
USE test; CREATE TABLE mytable (id INT(11) NOT NULL AUTO_INCREMENT, col1 CHAR(100), col2 CHAR(100), col3 INT(11), PRIMARY KEY (id) )ENGINE=InnoDB DEFAULT CHARSET=utf8; LOAD DATA LOCAL INFILE 'data' REPLACE INTO TABLE 'mytable' FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n'; INSERT INTO mytable (col1,col2,col3) SELECT col1,col2,col3 FROM mytable;
最后执行./select_bench -h 10.168.170.92 -n 10 -r 1000就能看到结果了： forking: ++++++++++ sleeping for 2 seconds while kids get ready waiting: ———- test: 10000 0.00017 0.006809 0.0010413514 10.413514 9602.9063772325 clients : 10 queries : 10000 fastest : 0.00017 slowest : 0.006809 average : 0.0010413514 serial : 10.413514 q/sec : 9602.9063772325
原文地址：mysql测试小工具mybench试用, 感谢原作者分享。
