HTTPS的压力测试工具 -- http_load

 

http_load

1. 官方描述：

• http_load runs multiple http fetches in parallel, to test the throughput of a web server. However unlike most such test clients, it runs in a single process, so it doesn't bog down the client machine. It can be configured to do https fetches as well.
• You give it a file containing a list of URLs that may be fetched, a flag specifying how to start connections (either by rate or by number of simulated users), and a flag specifying when to quit (either after a given number of fetches or a given elapsed time). There are also optional flags for checksums, throttling, random jitter, and progress reports.

reference: http://www.acme.com/software/http_load/

 

2. 安装方法：

 

• 将MakeFile中的SSL_TREE，SSL_DEFS，SSL_INC，SSL_LIBS注释去掉。其中SSL_TREE是openssl的安装路径。
• 如果是Solaris这样的SystemV系统，将SYSV_LIBS注释去掉

 

3. 使用方法：

http_load -parallel 5 -fetches 1000 urls.txt  

http_load -rate 2 -seconds 300 urls.txt  

样例含义

• -parallel 简写-p ：含义是并发的用户进程数。
• -fetches 简写-f ：含义是总计的访问次数
• -rate 简写-r ：含义是每秒的访问频率
• -seconds简写-s ：含义是总计的访问时间
• urls.txt 是一个url 列表，每个url 单独的一行；不可以直接跟一个url，有些博客主说的可以跟一个url是错误的说法。

4. 结果分析：

49 fetches, 2 max parallel, 289884 bytes, in 10.0148 seconds

5916 mean bytes/connection

4.89274 fetches/sec, 28945.5 bytes/sec

msecs/connect: 28.8932 mean, 44.243 max, 24.488 min

msecs/first-response: 63.5362 mean, 81.624 max, 57.803 min

HTTP response codes:

  code 200 -- 49

• 49 fetches, 2 max parallel, 289884 bytes, in 10.0148 seconds
• 一共发送了49次请求，最大并发数是2，发送了289884 字节， 用时10.0148秒

• 5916 mean bytes/connection 
• 每次请求平均发送5916字节

• 4.89274 fetches/sec, 28945.5 bytes/sec  
• 每秒请求数是4.89274(qps) ， 每秒发送28945.5字节 

• msecs/connect: 28.8932 mean, 44.243 max, 24.488 min
• 平均每个请求耗时28.8932msecs, 请求耗时最大44.243 msecs, 最小耗时24.488 msecs

• msecs/first-response: 63.5362 mean, 81.624 max, 57.803 min
• 首次平均响应时间63.5362msecs, 最大耗时81.624msecs, 最小耗时57.803msecs

• HTTP response codes: code 200 -- 49
• http响应码，返回200的有49次

 

由于http_load自身https的算法问题，发送压力测试请求的client机器成为了瓶颈，无法体现真实的https数据。所以又采用了httperf进行测试。

用法详见： http://blog.youkuaiyun.com/LongMarch12/archive/2011/05/26/6448346.aspx

http://www.softwareqatest.com/qatweb1.html#LOAD

压力测试集合