我有一个使用PHP的网站,Lighttpd。它还在Centos 5上使用MySQL。我已经使用Apache Bench(ab)在下面的代码中测试了我的PHP。这导致了一些错误(失败的请求),表明长度超出了正常范围。我绝对确定我的PHP结果应该始终具有相同的确切长度。我已经查看了我的Lighttpd和MySQL日志以及错误日志,并且那里没有任何错误。
当结果具有其他长度时,是否有任何方法可以准确地检查出ab会得到什么,或者是否有其他方法来找出原因是什么或什么是“不良”结果?
我需要知道,因为我需要100%的好成绩。
-bash-3.2# ab -n 500 -c 200 http://domain.com/test/index.php
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/
Benchmarking domain.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Finished 500 requests
Server Software: lighttpd/1.4.20
Server Hostname: domain.com
Server Port: 80
Document Path: /test/index.php
Document Length: 15673 bytes
Concurrency Level: 200
Time taken for tests: 0.375862 seconds
Complete requests: 500
Failed requests: 499
(Connect: 0, Length: 499, Exceptions: 0)
Write errors: 0
Total transferred: 7920671 bytes
HTML transferred: 7837000 bytes
Requests per second: 1330.28 [#/sec] (mean)
Time per request: 150.345 [ms] (mean)
Time per request: 0.752 [ms] (mean, across all concurrent requests)
Transfer rate: 20579.36 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 10 9.4 6 30
Processing: 0 113 133.5 16 342
Waiting: 0 111 134.3 12 341
Total: 0 123 138.9 16 370
Percentage of the requests served within a certain time (ms)
50% 16
66% 235
75% 289
80% 298
90% 331
95% 345
98% 365
99% 368
100% 370 (longest request)
最佳答案
使用ab
参数(即详细级别2)运行-v 2
。这将转储响应头。如果您的请求未使用分块编码,则将看到“Content-Length” header ,指示每个响应的大小。
gw:~$ ab -n 1 -v 2 "http://whatever.com/"
...
LOG: header received:
HTTP/1.0 200 OK
...
Content-Length: 1568399
如果您的响应使用分块编码,则在传输结束之前长度是未知的。通常,分块编码仅用于压缩响应,而ApacheBench默认情况下不进行压缩。
如果出于某种原因压缩了响应;压缩后的长度取决于内容。
您还可以使用
curl -i
和--compress
选项查看带有或不带有压缩的单个请求的响应 header 。