1.HTTP性能测试
Siege是我所用过的一款不错的网站压力测试工具，它可以非常容易地定制并发访问人数以及并发时间，安装、使用也非常方便，当然它是在Linux环境下使用的，类似于apache的ab，但是不会出现段故障。下面来对它作一个介绍。官方网址：http://www.joedog.org/
tar zxvf siege-3.0.0.tar.gz
./configure
make
make install
使用：
1)启动100个用户(线程)在5分钟内对某一页面并发访问
2)对多个页面进行并发访问
新建一个文件urls，里面的内容为(只是例子，任何url都可以)：
siege -f urls -c200 -t5
表示启动200个用户在5分钟内并发访问以上的url网址。
局域网内测试：
siege http://58.64.201.239
-c600 -t1 -q -b
[error] socket: -2066585856 address is unavailable.: Cannot
assign requested address
[error] socket: -2040989952 address is unavailable.: Cannot assign
requested address
[error] socket: 749311744 address is unavailable.: Cannot assign
requested address
[error] socket: 1236461312 address is unavailable.: Cannot assign
requested address
[error] socket: -2082949376 address is unavailable.: Cannot assign
requested address
[error] socket: 1966135040 address is unavailable.: Cannot assign
requested address
Lifting the server siege...[error] socket: -2072459520 address
is unavailable.: Cannot assign requested address
[error] socket: 2065159936 address is unavailable.: Cannot assign
requested address
[error] socket: 942745344 address is unavailable.: Cannot assign
requested address
[error] socket: 2023200512 address is unavailable.: Cannot assign
requested address
done.
siege aborted due to excessive socket failure; you
can change the failure threshold in $HOME/.siegerc
Transactions: 64509 hits
Availability: 98.06 %
Elapsed
time: 10.40 secs
Data
transferred: 1.23 MB
Response
time: 0.05 secs
Transaction
rate: 6202.79 trans/sec
Throughput: 0.12 MB/sec
Concurrency: 331.44
Successful
transactions: 64509
Failed
transactions: 1278
Longest
transaction: 6.08
Shortest
transaction: 0.00客户端跑了10s左右，就因tcp连接端口数达到极限65536( wc -l
/proc/net/ip_conntrack看到)而报错。
从结果看，10s成功的访问有64509次，每秒并发达6202次！响应时间只有0.05s！
2.MySQL性能测试
MySQL从5.1.4版开始带有一个压力测试工具mysqlslap，通过模拟多个并发客户端访问mysql来执行测试，使用起来非常的简单。通过mysqlslap
--help可以获得可用的选项，这里列一些主要的参数，更详细的说明参考官方手册：http://dev.mysql.com/doc/refman/5.1/en/mysqlslap.html
这里要注意的几个选项：
--concurrency代表并发数量，多个可以用逗号隔开，当然你也可以用自己的分隔符隔开，这个时候要用到--delimiter开关。
--engines代表要测试的引擎，可以有多个，用分隔符隔开。
--iterations代表要运行这些测试多少次。
--auto-generate-sql 代表用系统自己生成的SQL脚本来测试。
--auto-generate-sql-load-type
代表要测试的是读还是写还是两者混合的(read,write,update,mixed)
--number-of-queries
代表总共要运行多少次查询。每个客户运行的查询数量可以用查询总数/并发数来计算。比如倒数第二个结果2=200/100。
--debug-info 代表要额外输出CPU以及内存的相关信息。
--number-int-cols 代表示例表中的INTEGER类型的属性有几个。
--number-char-cols 意思同上。
--create-schema 代表自己定义的模式(在MySQL中也就是库)。
--query 代表自己的SQL脚本。
--only-print 如果只想打印看看SQL语句是什么，可以用这个选项。
授权：
mysql>grant all privileges on *.* to 'ekeken_test'@'%' identified by
'a2adasdv*#Dtux' ;测试：
#mysqlslap --defaults-file=/etc/my.cnf --concurrency=50,100
--iterations=1 --number-int-cols=4 --number-char-cols=35
--auto-generate-sql --auto-generate-sql-add-autoincrement
--auto-generate-sql-load-type=mixed --engine=myisam,innodb
--number-of-queries=200 --debug-info -uekeken_test
-p'a2adasdv*#Dtux' -h 192.168.1.25
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.098 seconds
Minimum number of seconds to run all queries: 0.092 seconds
Maximum number of seconds to run all queries: 0.104 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 1.266 seconds
Minimum number of seconds to run all queries: 0.106 seconds
Maximum number of seconds to run all queries: 1.608 seconds
Number of clients running queries: 100
Average number of queries per client: 2
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 3.343 seconds
Minimum number of seconds to run all queries: 3.278 seconds
Maximum number of seconds to run all queries: 3.431 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 3.394 seconds
Minimum number of seconds to run all queries: 3.285 seconds
Maximum number of seconds to run all queries: 3.471 seconds
Number of clients running queries: 100
Average number of queries per client: 2
User time 0.24, System time 1.12
Maximum resident set size 26628, Integral resident set size 0
Non-physical pagefaults 11606, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 36533, Involuntary context switches
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