I now how to integrate eaccelerator for the port 80 apache but I don't know how to integrate it in the ISPC apache. Did someone tryed something like that?
You can do it, but normally ISPConfig doesn't become a bottleneck. How often do you use ISPConfig to configure something, and then compare this to the load caused by a multi-million page view web site.
Just impatient I think he is just impatient not really trying to do it for any other reason. Not to say that I blame him honestly. I am impatient myself. Fred