[users@httpd] only one worker process

2011-09-06 Thread Jan Vávra 

Hello,
 I'm developing a php module and I'd like to test if the module doesn't 
consume memory and doesn't make a seg fault.

I'd like to make a multithreaded test and start only one worker process.
Can anybody help me with the proper configuration?

I have SLES11, 32bit. The server-tuning.conf I set to:

IfModule prefork.c
StartServers 1
MinSpareServers  1
MaxSpareServers 1
ServerLimit2
MaxClients 150
MaxRequestsPerChild  1
/IfModule
IfModule worker.c
StartServers 1
MinSpareThreads 25
MaxSpareThreads 75
ThreadLimit 64
MaxClients 150
ThreadsPerChild 25
MaxRequestsPerChild  1
/IfModule
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
IfModule mod_setenvif.c
BrowserMatch Mozilla/2 nokeepalive
BrowserMatch MSIE 4\.0b2; nokeepalive downgrade-1.0 
force-response-1.0

BrowserMatch RealPlayer 4\.0 force-response-1.0
BrowserMatch Java/1\.0 force-response-1.0
BrowserMatch JDK/1\.0 force-response-1.0
BrowserMatch Microsoft Data Access Internet Publishing 
Provider redirect-carefully

BrowserMatch ^WebDrive redirect-carefully
BrowserMatch ^WebDAVFS/1.[012] redirect-carefully
BrowserMatch ^gnome-vfs redirect-carefully
/IfModule

The apache compilation options are:

ca:/etc/apache2 # /usr/sbin/httpd2 -V
Server version: Apache/2.2.10 (Linux/SUSE)
Server built:   Apr 13 2010 16:44:06
Server's Module Magic Number: 20051115:20
Server loaded:  APR 1.3.3, APR-Util 1.3.4
Compiled using: APR 1.3.3, APR-Util 1.3.4
Architecture:   32-bit
Server MPM: Prefork
  threaded: no
forked: yes (variable process count)
Server compiled with
 -D APACHE_MPM_DIR=server/mpm/prefork
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=128
 -D HTTPD_ROOT=/srv/www
 -D SUEXEC_BIN=/usr/sbin/suexec2
 -D DEFAULT_PIDLOG=/var/run/httpd2.pid
 -D DEFAULT_SCOREBOARD=logs/apache_runtime_status
 -D DEFAULT_LOCKFILE=/var/run/accept.lock
 -D DEFAULT_ERRORLOG=/var/log/apache2/error_log
 -D AP_TYPES_CONFIG_FILE=/etc/apache2/mime.types
 -D SERVER_CONFIG_FILE=/etc/apache2/httpd.conf


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Re: [users@httpd] only one worker process

2011-09-06 Thread Prasanna Ram Venkatachalam 

 I'd like to make a multithreaded test and start only one worker process.
 Can anybody help me with the proper configuration?


The MPM for above model should be worker MPM. Refer to this link
http://httpd.apache.org/docs/2.0/mod/worker.html



 IfModule worker.c
StartServers 1
MinSpareThreads 25
MaxSpareThreads 75
ThreadLimit 64
MaxClients 150
ThreadsPerChild 25
MaxRequestsPerChild  1
 /IfModule


Add ServerLimit inside the above block and keep its value 1.


 The apache compilation options are:

 Server MPM: Prefork
  threaded: no
forked: yes (variable process count)
 Server compiled with
  -D APACHE_MPM_DIR=server/mpm/prefork


Seems the apache is configured with prefork. That means multiple processes
and not threads as you can see from above.
You might need to reconfigure and compile with following option
--with-mpm=worker

Good luck

-Pras