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Bug#495656: marked as done (apache2-mpm-worker: ThreadLimit directive goes unnoticed)

Your message dated Tue, 04 Aug 2009 10:32:16 +0000
with message-id <E1MYHJY-0005Ye-If@ries.debian.org>
and subject line Bug#495656: fixed in apache2 2.2.12-1
has caused the Debian Bug report #495656,
regarding apache2-mpm-worker: ThreadLimit directive goes unnoticed
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
495656: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=495656
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: apache2-mpm-worker
Version: 2.2.3-4+etch4
Severity: important


Hi,

Using the ThreadLimit directive when configuring apache2 to use the 
mpm_worker_module, the startup messages show that this directive is 
ignored. Apache always maintains the value 64. 

there is a 

      #define DEFAULT_THREAD_LIMIT 64

setting in file 

	./server/mpm/worker/worker.c:

of the apache2 source package. 


Below a series of mpm_worker_module configurations and the associated 
start or stop messages. The series supports my notion that the directives 
are read and checked for consistency, but the value of ThreadLimit is 
always presupposed to be at its default value of 64 -- whatever the 
directive is. 

<IfModule mpm_worker_module>

ServerLimit     25
StartServers        10
MaxClients         1600
ThreadLimit        2
MinSpareThreads     25
MaxSpareThreads    256
ThreadsPerChild    1024
MaxRequestsPerChild  0

</IfModule>


scratch # /etc/init.d/apache2 start
=> 
Starting web server (apache2)...WARNING: ThreadsPerChild of 1024 exceeds ThreadLimit value of 64
threads, lowering ThreadsPerChild to 64. To increase, please see the
 ThreadLimit directive.


<IfModule mpm_worker_module>

ServerLimit     25
StartServers        10
MaxClients         1600
ThreadLimit        128
MinSpareThreads     25
MaxSpareThreads    256
ThreadsPerChild    1024
MaxRequestsPerChild  0

</IfModule>


scratch # /etc/init.d/apache2 stop
Stopping web server (apache2)...WARNING: ThreadsPerChild of 1024 exceeds ThreadLimit value of 64
threads, lowering ThreadsPerChild to 64. To increase, please see the
 ThreadLimit directive.
httpd (no pid file) not running



<IfModule mpm_worker_module>

ServerLimit     25
StartServers        10
MaxClients         3200
ThreadLimit        128
MinSpareThreads     25
MaxSpareThreads    256
ThreadsPerChild    128
MaxRequestsPerChild  0

</IfModule>


scratch # /etc/init.d/apache2 stop
=> 
Stopping web server (apache2)...WARNING: ThreadsPerChild of 128 exceeds ThreadLimit value of 64
threads, lowering ThreadsPerChild to 64. To increase, please see the
 ThreadLimit directive.
WARNING: MaxClients of 3200 would require 50 servers,
 and would exceed the ServerLimit value of 25.
 Automatically lowering MaxClients to 1600.  To increase,
 please see the ServerLimit directive.
httpd (no pid file) not running


<IfModule mpm_worker_module>

ServerLimit     25
StartServers        10
MaxClients         1600
ThreadLimit        128
MinSpareThreads     25
MaxSpareThreads    256
ThreadsPerChild    128
MaxRequestsPerChild  0

</IfModule>


scratch # /etc/init.d/apache2 stop
=> 
Stopping web server (apache2)...WARNING: ThreadsPerChild of 128 exceeds ThreadLimit value of 64
threads, lowering ThreadsPerChild to 64. To increase, please see the
 ThreadLimit directive.
httpd (no pid file) not running


<IfModule mpm_worker_module>

ServerLimit     25
StartServers        10
MaxClients         1600
ThreadLimit        1
MinSpareThreads     25
MaxSpareThreads    256
ThreadsPerChild    64
MaxRequestsPerChild  0

</IfModule>


scratch # /etc/init.d/apache2 start
=>
Starting web server (apache2)....

scratch # /etc/init.d/apache2 stop
=> 
Stopping web server (apache2)....


regards 

max.



-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18
Locale: LANG=en_US.iso88591, LC_CTYPE=en_US.iso88591 (charmap=locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
ANSI_X3.4-1968)

Versions of packages apache2-mpm-worker depends on:
ii  apa 2.2.3-4+etch4                        Next generation, scalable, extenda
ii  lib 1.2.7-8.2                            The Apache Portable Runtime Librar
ii  lib 1.2.7+dfsg-2                         The Apache Portable Runtime Utilit
ii  lib 2.3.6.ds1-13etch5                    GNU C Library: Shared libraries
ii  lib 4.4.20-8                             Berkeley v4.4 Database Libraries [
ii  lib 1.95.8-3.4                           XML parsing C library - runtime li
ii  lib 2.1.30-13.3                          OpenLDAP libraries
ii  lib 6.7+7.4-3                            Perl 5 Compatible Regular Expressi
ii  lib 8.1.11-0etch1                        PostgreSQL C client library
ii  lib 3.3.8-1.1                            SQLite 3 shared library
ii  lib 1.39+1.40-WIP-2006.11.14+dfsg-2etch1 universally unique id library

apache2-mpm-worker recommends no packages.

-- debconf information excluded

--- End Message ---
--- Begin Message --- 
Source: apache2
Source-Version: 2.2.12-1

We believe that the bug you reported is fixed in the latest version of
apache2, which is due to be installed in the Debian FTP archive:

apache2-dbg_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2-dbg_2.2.12-1_i386.deb
apache2-doc_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2-doc_2.2.12-1_all.deb
apache2-mpm-event_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2-mpm-event_2.2.12-1_all.deb
apache2-mpm-itk_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2-mpm-itk_2.2.12-1_all.deb
apache2-mpm-prefork_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2-mpm-prefork_2.2.12-1_all.deb
apache2-mpm-worker_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2-mpm-worker_2.2.12-1_all.deb
apache2-prefork-dev_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2-prefork-dev_2.2.12-1_i386.deb
apache2-suexec-custom_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2-suexec-custom_2.2.12-1_i386.deb
apache2-suexec_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2-suexec_2.2.12-1_i386.deb
apache2-threaded-dev_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2-threaded-dev_2.2.12-1_i386.deb
apache2-utils_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2-utils_2.2.12-1_i386.deb
apache2.2-bin_2.2.12-1_i386.deb
  to pool/main/a/apache2/apache2.2-bin_2.2.12-1_i386.deb
apache2.2-common_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2.2-common_2.2.12-1_all.deb
apache2_2.2.12-1.diff.gz
  to pool/main/a/apache2/apache2_2.2.12-1.diff.gz
apache2_2.2.12-1.dsc
  to pool/main/a/apache2/apache2_2.2.12-1.dsc
apache2_2.2.12-1_all.deb
  to pool/main/a/apache2/apache2_2.2.12-1_all.deb
apache2_2.2.12.orig.tar.gz
  to pool/main/a/apache2/apache2_2.2.12.orig.tar.gz



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 495656@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Stefan Fritsch <sf@debian.org> (supplier of updated apache2 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Tue, 04 Aug 2009 11:02:34 +0200
Source: apache2
Binary: apache2.2-common apache2.2-bin apache2-mpm-worker apache2-mpm-prefork apache2-mpm-event apache2-mpm-itk apache2-utils apache2-suexec apache2-suexec-custom apache2 apache2-doc apache2-prefork-dev apache2-threaded-dev apache2-dbg
Architecture: source i386 all
Version: 2.2.12-1
Distribution: unstable
Urgency: low
Maintainer: Debian Apache Maintainers <debian-apache@lists.debian.org>
Changed-By: Stefan Fritsch <sf@debian.org>
Description: 
 apache2    - Apache HTTP Server metapackage
 apache2-dbg - Apache debugging symbols
 apache2-doc - Apache HTTP Server documentation
 apache2-mpm-event - Apache HTTP Server - event driven model
 apache2-mpm-itk - multiuser MPM for Apache 2.2
 apache2-mpm-prefork - Apache HTTP Server - traditional non-threaded model
 apache2-mpm-worker - Apache HTTP Server - high speed threaded model
 apache2-prefork-dev - Apache development headers - non-threaded MPM
 apache2-suexec - Standard suexec program for Apache 2 mod_suexec
 apache2-suexec-custom - Configurable suexec program for Apache 2 mod_suexec
 apache2-threaded-dev - Apache development headers - threaded MPM
 apache2-utils - utility programs for webservers
 apache2.2-bin - Apache HTTP Server common binary files
 apache2.2-common - Apache HTTP Server common files
Closes: 196795 272476 363964 451563 461917 465393 467004 483111 493252 495656 500885 511878 512084 512778
Changes: 
 apache2 (2.2.12-1) unstable; urgency=low
 .
   * New upstream release:
     - Adds support for TLS Server Name Indication (closes: #461917 LP: #184131).
       (The Debian default configuration will be changed to use SNI in a later
       version.)
     - Fixes timefmt config in SSI (closes: #363964).
     - mod_ssl: Adds SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN directives
       to enable stricter checking of remote server certificates.
   * Make mod_deflate not compress the content for HEAD requests. This is a
     similar issue as CVE-2009-1891.
   * Enable hardening compile options.
   * Switch default LogFormat from %b (size of file sent) to %O (bytes actually
     sent) (closes: #272476 LP: #255124)
   * Add the default LANG=C to /etc/apache2/envvars and document it in
     README.Debian (closes: #511878).
   * Enable localized error pages by default if the necessary modules are
     loaded. Move the config for it from apache2.conf to
     /etc/apache2/conf.d/localized-error-pages (closes: #467004). Clarify the
     required order of the aliases in the comment (closes: #196795).
   * Change default for ServerTokens to 'OS', to not announce the exact module
     versions to the world (LP: #205996)
   * Make a2ensite and friends ignore the same filenames as apache does for
     included config files, even if LANG is not C.
   * Merge source packages apache2 and apache2-mpm-itk (current itk version is
     2.2.11-02). This removes the binNMU mess necessary for every apache2 upload
     (closes: #500885, #512084). Add Steinar to Uploaders. Remove apache2-src
     package, which is no longer necessary.
   * Ship our own version of the magic config file (taken from file 4.17-5etch3)
     which is still compatible with mod_mime_magic (closes: #483111).
   * Add ThreadLimit to the default config and put ThreadsPerChild and
     MaxClients into the correct order so that Apache does not complain
     (closes: #495656).
     Also add a configuration block for the event MPM in apache2.conf.
   * Fix HTTP PUT with mod_dav failing to detect an aborted connection
     (closes: #451563).
   * Change references to httpd.conf in apache2-doc to apache2.conf
     (closes: #465393).
   * Clarify the recommended permissions for SSL certificates in README.Debian
     (closes: #512778).
   * Document in README.Debian how to name files in conf.d to avoid conflicts
     with packages (closes: #493252)
   * Remove 2.0 -> 2.2 upgrade logic from maintainer scripts.
   * Remove other_vhosts_access.log on package purge.
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--- End Message ---
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