Don't know what happened to my Apache server
 

I used autobench and httperf to benchmark my Apache server (UBUNTU).

But whatever I changed to the .conf or change the parameter of autobench, the result will be like this:

Reply rate [replies/s]: min 0.0 avg 0.0 max 0.0 stddev 0.0 (0 samples)
Reply time [ms]: response 13.4 transfer 20.1
Reply size [B]: header 200.0 content 25088.0 footer 2.0 (total 25290.0)
Reply status: 1xx=0 2xx=5 3xx=0 4xx=0 5xx=0

Reply rate is always 0.

But there is no error, and I can visit the host from the client's Firefox.

Anybody konws why?

No, and there's no way we can even guess. You give no details about version/distro of Linux, what you've done, or what you've tried.

You hint at the fact that you changed a config file...so chances are, you did something wrong in it. Since you don't say what you changed, how can we tell you what to change back??