Windows Server 2008 RC - Connection Erros - Apache Benchmark

Question

If we want tu run some benchmark, the following

/ab.exe -n 500 -c 300 -v 1000 -k http://server:port/test.html

lead to an "connection refused":

Test aborted after 10 failures

apr_socket_connect(): Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte.   (730061)

It is possible to deactive the "limit"? Which limit is applied? We see nothing in the Windows event log.

If we call less connections it works:

./ab.exe -n 500 -c 257 -k http://server:port/test.html

Does anyone knows ho to find the corresponding limit? And mabe how to deactivate, because we have not enough hosts to use different IPs for the request.

Answer 1

The solution is to uncomment the MPM config include in httpd.conf

# Server-pool management (MPM specific)
Include conf/extra/httpd-mpm.conf

Then locate the mpm_winnt_module and change the thread count from the current value to whatever you want.

<IfModule mpm_winnt_module>
    ThreadsPerChild      1000
    MaxRequestsPerChild    0
</IfModule>