I'm trying to understand the full effect of the EnableSendfile
directive. If I set the directive to 'Off', what happens when I
invoke $r->sendfile($myfile) ??

My hope is that the $r->sendfile will simply use mechanism other than
sendfile() to read/send the given file (maybe allocate a buffer, read
in file to buffer, send buffer, repeat until file is eof()... or
something similar). But I've looked in the source, but I can't seem
to convince myself that this will actually happen.

Thanks
dave viner