You are viewing a plain text version of this content. The canonical link for it is here.
Posted to apache-bugdb@apache.org by "William L.Sebok" <wl...@astro.umd.edu> on 2001/11/21 17:30:38 UTC
general/8826: Threaded mpm creates large number of processes.
>Number: 8826
>Category: general
>Synopsis: Threaded mpm creates large number of processes.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: apache
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: apache
>Arrival-Date: Wed Nov 21 08:40:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: wls@astro.umd.edu
>Release: 2.0.28
>Organization:
apache
>Environment:
Mandrake 8.0. gcc-2.96
% uname -a
Linux gaia.astro.umd.edu 2.4.13-p3 #1 Wed Oct 24 11:25:57 EDT 2001 i686 unknown
Configured with:
CFLAGS="-O3 -march=i686" \
./configure \
--prefix=/local/etc/www \
--with-perl=/usr/bin/perl \
--enable-mods-shared=all \
--with-mpm=perchild
>Description:
I started with the standard httpd-std.conf copied to httpd.conf. The relevant
parameters were:
<IfModule threaded.c>
StartServers 3
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>
83 processes are created.
When (keeping other parameters the same) I reduce START_SERVERS to 1, 29
processes are created.
I was under the impression that the Threaded mpm would create a small number
of processes and field requests with threads inside those processes. Instead
it creates a very large number of processes more than prefork mpm. This makes
threaded mode essentially useless for a small server where I would like to keep
the number of processes as small as possible.
I noticed similar behavior in worker mpm. perchild mpm would not compile. Is
why preforked mpm is currently default for linux?
>How-To-Repeat:
See above.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
[In order for any reply to be added to the PR database, you need]
[to include <ap...@Apache.Org> in the Cc line and make sure the]
[subject line starts with the report component and number, with ]
[or without any 'Re:' prefixes (such as "general/1098:" or ]
["Re: general/1098:"). If the subject doesn't match this ]
[pattern, your message will be misfiled and ignored. The ]
["apbugs" address is not added to the Cc line of messages from ]
[the database automatically because of the potential for mail ]
[loops. If you do not include this Cc, your reply may be ig- ]
[nored unless you are responding to an explicit request from a ]
[developer. Reply only with text; DO NOT SEND ATTACHMENTS! ]