You've probably included mod_worker (http://httpd.apache.org/docs/2.0/mod/worker.html) In this case, requests are assigned to a thread within a unix process. I think that each thread can operate concurrently (that is the definition of a thread right?), and apache child processes are likely given CPU time according to the operating system's process scheduler. I suspect, given: each request takes approximately the same time to process and the thread assignment is balanced, that Apache generally acts like FIFO, but it's not a really a stack until you get down to the hardware so the analogy isn't appropriate... On Fri, Jun 5, 2009 at 5:45 AM, Eric Covener <covener@xxxxxxxxx> wrote: > On Fri, Jun 5, 2009 at 8:08 AM, ricardo figueiredo > <ricardoogrande@xxxxxxxxx> wrote: >> Hi, >> >>> I would like about How work Apache ?? >>> I read a scientific about that Apache works like FIFO. >>> Is it true ?? >> Anyone ??? > > You need to elaborate. What scenario/processing in Apache are you > talking about? > > -- > Eric Covener > covener@xxxxxxxxx > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx