用ab压力测试php，并发1000时，Finished 0 requests？？

[wangying1208]

今天用ab压力测试php，在并发为1000的情况下，发现情况完成的请求数目为0.
我用的是apache，在上网查了下说apache服务器对连接数有限制，做了更改，但是结果与更改之前的一样，求助~~~

C:\xampp\apache\bin>ab -c 1000 -t 10 http://172.24.2.112/hello.php
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 172.24.2.112 (be patient)
Finished 0 requests


Server Software: Apache/2.2.21
Server Hostname: 172.24.2.112
Server Port: 80

Document Path: /hello.php
Document Length: 0 bytes

Concurrency Level: 1000
Time taken for tests: 12.972 seconds
Complete requests: 0
Failed requests: 9
(Connect: 9, Receive: 0, Length: 0, Exceptions: 0)
Write errors: 0
Total transferred: 258300 bytes
HTML transferred: 38700 bytes