apache benchmark :Connection reset by peer (54) error

[yavuz <sakncli@xxxxxxxxx>]

Hi all,

I have a question about ab ( apache benchmark ) and couldn't find any other mailing list to ask. If this group is not a suitable one, sorry for the message pollution.

I'am trying to make some stress tests for some http servers using ab.

Let say, I am using below command:

ab -c X -n Y http://127.0.0.1:80/     ( where X and Y are numbers. )

When I give large X values, I get the error below:
"apr_socket_recv: Connection reset by peer (54)"

What is the reason/origin of this error: operating system, ab or server program? 

When I use apache as server, setting X=150 and Y=10.000 resulted in error I mentioned.
On the other hand when I use libmicrohttpd as server X=33 resulted in error. 

My operating system is freebsd 7.2.

thanks in advance.

yavuz