title: Apache worker MPM and Linux threads
body: <p>Apache's worker MPM creates multiple threads per process, where each thread handles a request.  As of 2.6, the Linux kernel uses Native POSIX Threading Library, which has a 1:1 threading model. Given this, I would expect to see 100 apache processes if there are 100 simultaneous requests being serviced (one request -> one thread -> one process).  However, after running some real world tests, I see this is not the case.  What is going on here?</p>