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From "Brad Nicholes" <BNICHO...@novell.com>
Subject Re: Use threaded MPM by default was Re: cvs commit: httpd-2.0 STATUS
Date Thu, 11 Nov 2004 16:01:12 GMT
   It's not Linux but here is a piece of information that should help. 
NetWare is a thread only environment which means that we have been
shipping and running all of the standard modules since day one with
really no report of any threading related issues.  I can't speak for any
third party modules out there that may not be thread safe and I
understand that Apache for NetWare has nowhere near the number of
installations as Linux or others, but our standard modules seem to be
doing well from a NetWare point of view.  Even on multi-proc machines. 
Granted we don't normally stress test mod_example ;).

Brad

>>> jorton@redhat.com Thursday, November 11, 2004 3:38:29 AM >>>
On Sat, Nov 06, 2004 at 12:48:50AM -0800, Justin Erenkrantz wrote:
> --On Saturday, November 6, 2004 8:28 AM +0000 pquerna@apache.org
wrote:
> 
> >  @@ -125,6 +125,8 @@
> >         +0:   BrianP, Aaron (mutex contention is looking better
with the
> >               latest code, let's continue tuning and testing),
rederpj, 
> >               jim
> >         -0:   Lars
> >  +
> >  +      pquerna: Do we want to change this for 2.2?
> 
> Seems reasonable to do so.  2.0 was our first threaded release -
making a 
> threaded MPM by default (if available) for 2.2 seems fine by me.  --
justin

I don't really agree with this.  Many third-party modules still aren't
thread-safe (and probably quite a few shipped in httpd too e.g. 
mod_example!).  Making worker the default won't solve that, it'll just
create a stream of "I upgraded to 2.2 and now everything segfaults"
bug
reports and people will stick with 1.3/2.0. 

2.2 can be a compelling upgrade without making worker the default.

joe


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