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Posted to users@tomcat.apache.org by "M. Serrano" <sm...@hotmail.com> on 2002/05/02 15:26:51 UTC
mod_jk performance optimization
Hi.
I've got installed in my box Linux, Apache 1.3.19, JDK 1.3.1 and TC 3.3.1
working with ajp13. The following error appeard in my mod_jk.log after a bit
of continuous utilisation:
[jk_ajp13_worker.c (203)]: connection_tcp_get_message: Error -
jk_tcp_socket_recvfull failed
[jk_ajp13_worker.c (621)]: Error reading request
After analysing the server's config files and reading some threads, I
concluded that the problem might be resolved through a bit of extra
re-configuration. Although the problem appearence was delayed, it still
existed.
I wonder if anyone out there could help me with this subject. I'm sending in
attach some lines of httpd.conf, server.xml and mod_jk.conf
Thanx a lot for your time.
Serrano.
##
## httpd.conf -- Apache HTTP server configuration file
##
#
# Timeout: The number of seconds before receives and sends time out.
#
Timeout 300
#
# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
#
KeepAlive On
#
# MaxKeepAliveRequests: The maximum number of requests to allow
# during a persistent connection. Set to 0 to allow an unlimited amount.
# We recommend you leave this number high, for maximum performance.
#
MaxKeepAliveRequests 100
#
# KeepAliveTimeout: Number of seconds to wait for the next request from the
# same client on the same connection.
#
KeepAliveTimeout 15
#
# Server-pool size regulation. Rather than making you guess how many
# server processes you need, Apache dynamically adapts to the load it
# sees --- that is, it tries to maintain enough server processes to
# handle the current load, plus a few spare servers to handle transient
# load spikes (e.g., multiple simultaneous requests from a single
# Netscape browser).
#
# It does this by periodically checking how many servers are waiting
# for a request. If there are fewer than MinSpareServers, it creates
# a new spare. If there are more than MaxSpareServers, some of the
# spares die off. The default values are probably OK for most sites.
#
MinSpareServers 5
MaxSpareServers 10
#
# Number of servers to start initially --- should be a reasonable ballpark
# figure.
#
StartServers 8
#
# Limit on total number of servers running, i.e., limit on the number
# of clients who can simultaneously connect --- if this limit is ever
# reached, clients will be LOCKED OUT, so it should NOT BE SET TOO LOW.
# It is intended mainly as a brake to keep a runaway server from taking
# the system with it as it spirals down...
#
MaxClients 150
#
# MaxRequestsPerChild: the number of requests each child process is
# allowed to process before the child dies. The child will exit so
# as to avoid problems after prolonged use when Apache (and maybe the
# libraries it uses) leak memory or other resources. On most systems, this
# isn't really needed, but a few (such as Solaris) do have notable leaks
# in the libraries. For these platforms, set to something like 10000
# or so; a setting of 0 means unlimited.
#
# NOTE: This value does not include keepalive requests after the initial
# request per connection. For example, if a child process handles
# an initial request and 10 subsequent "keptalive" requests, it
# would only count as 1 request towards this limit.
#
MaxRequestsPerChild 200
#
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
DocumentRoot /usr/local/jakarta-tomcat-3.3.1/webapps/ROOT
# This should be changed to whatever you set DocumentRoot to.
#
<Directory "/usr/local/jakarta-tomcat-3.3.1/webapps/ROOT">
#
# This may also be "None", "All", or any combination of "Indexes",
# "Includes", "FollowSymLinks", "ExecCGI", or "MultiViews".
#
# Note that "MultiViews" must be named *explicitly* --- "Options All"
# doesn't give it to you.
#
Options indexes includes followSymLinks
#
# This controls which options the .htaccess files in directories can
# override. Can also be "All", or any combination of "Options", "FileInfo",
# "AuthConfig", and "Limit"
#
AllowOverride None
#
# Controls who can get stuff from this server.
#
Order allow,deny
Allow from all
</Directory>
# Include TOMCAT
Include /usr/local/jakarta-tomcat-3.3.1/conf/auto/mod_jk.conf-local
----------------- mod_jk.conf-local -----------------
########## Auto generated on Tue Apr 30 11:47:40 WEST 2002##########
<IfModule !mod_jk.c>
LoadModule jk_module libexec/mod_jk.so
AddModule mod_jk.c
</IfModule>
JkWorkersFile "/usr/local/jakarta-tomcat-3.3.1/conf/jk/workers.properties"
JkLogFile "/usr/local/jakarta-tomcat-3.3.1/logs/mod_jk.log"
JkLogLevel error
#################### /WebApplication ####################
# Static files
Alias /WebApplication
"/usr/local/jakarta-tomcat-3.3.1/webapps/WebApplication"
<Directory "/usr/local/jakarta-tomcat-3.3.1/webapps/WebApplication">
Options Indexes FollowSymLinks
DirectoryIndex index.jsp index.html index.htm
</Directory>
# Deny direct access to WEB-INF and META-INF
#
<Location "/WebApplication/WEB-INF/*">
AllowOverride None
deny from all
</Location>
<Location "/WebApplication/META-INF/*">
AllowOverride None
deny from all
</Location>
JkMount /WebApplication/servlet ajp13
JkMount /WebApplication/servlet/* ajp13
JkMount /WebApplication/*.jsp ajp13
#################### / ####################
# Be sure to update DocumentRoot
# to point to: "/usr/local/jakarta-tomcat-3.3.1/webapps/ROOT"
<Directory "/usr/local/jakarta-tomcat-3.3.1/webapps/ROOT">
Options Indexes FollowSymLinks
DirectoryIndex index.jsp index.html index.htm
</Directory>
# Deny direct access to WEB-INF and META-INF
#
<Location "/WEB-INF/*">
AllowOverride None
deny from all
</Location>
<Location "/META-INF/*">
AllowOverride None
deny from all
</Location>
JkMount /servlet ajp13
JkMount /servlet/* ajp13
JkMount /*.jsp ajp13
------ server.xml ------
.
.
.
<ApacheConfig forwardAll="false" noRoot="false" jkDebug="error"/>
<IISConfig noRoot="false" />
<NSConfig noRoot="false" />
<!-- ==================== Connectors ==================== -->
<Http10Connector port="8080"
secure="false"
maxThreads="200"
maxSpareThreads="50"
minSpareThreads="10" />
<Ajp12Connector port="8007" />
<Ajp13Connector port="8009"
maxThreads="300"
maxSpareThreads="100"
minSpareThreads="10" />
.
.
.
_________________________________________________________________
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http://photos.msn.com/support/worldwide.aspx
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Re: mod_jk performance optimization
Posted by co...@covalent.net.
On Thu, 2 May 2002, M. Serrano wrote:
> Hi.
>
> I've got installed in my box Linux, Apache 1.3.19, JDK 1.3.1 and TC 3.3.1
> working with ajp13. The following error appeard in my mod_jk.log after a bit
> of continuous utilisation:
>
> [jk_ajp13_worker.c (203)]: connection_tcp_get_message: Error -
> jk_tcp_socket_recvfull failed
> [jk_ajp13_worker.c (621)]: Error reading request
>From the line numbers, you may use an older version of jk, try updating
from CVS head first ( the bug may be already fixed ) ( you can use either
the 'frozen' jk from 3.3 or j-t-c ).
The error message means from some reasons tomcat didn't sent back any
content - so you may need to look in tomcat's lots as well.
( the 'reading request' means the request from tomcat to jk to send a
chunk of data )
Costin
>
> After analysing the server's config files and reading some threads, I
> concluded that the problem might be resolved through a bit of extra
> re-configuration. Although the problem appearence was delayed, it still
> existed.
>
> I wonder if anyone out there could help me with this subject. I'm sending in
> attach some lines of httpd.conf, server.xml and mod_jk.conf
>
> Thanx a lot for your time.
> Serrano.
>
> ##
> ## httpd.conf -- Apache HTTP server configuration file
> ##
>
> #
> # Timeout: The number of seconds before receives and sends time out.
> #
> Timeout 300
>
> #
> # KeepAlive: Whether or not to allow persistent connections (more than
> # one request per connection). Set to "Off" to deactivate.
> #
> KeepAlive On
>
> #
> # MaxKeepAliveRequests: The maximum number of requests to allow
> # during a persistent connection. Set to 0 to allow an unlimited amount.
> # We recommend you leave this number high, for maximum performance.
> #
> MaxKeepAliveRequests 100
>
> #
> # KeepAliveTimeout: Number of seconds to wait for the next request from the
> # same client on the same connection.
> #
> KeepAliveTimeout 15
>
> #
> # Server-pool size regulation. Rather than making you guess how many
> # server processes you need, Apache dynamically adapts to the load it
> # sees --- that is, it tries to maintain enough server processes to
> # handle the current load, plus a few spare servers to handle transient
> # load spikes (e.g., multiple simultaneous requests from a single
> # Netscape browser).
> #
> # It does this by periodically checking how many servers are waiting
> # for a request. If there are fewer than MinSpareServers, it creates
> # a new spare. If there are more than MaxSpareServers, some of the
> # spares die off. The default values are probably OK for most sites.
> #
> MinSpareServers 5
> MaxSpareServers 10
>
> #
> # Number of servers to start initially --- should be a reasonable ballpark
> # figure.
> #
> StartServers 8
>
> #
> # Limit on total number of servers running, i.e., limit on the number
> # of clients who can simultaneously connect --- if this limit is ever
> # reached, clients will be LOCKED OUT, so it should NOT BE SET TOO LOW.
> # It is intended mainly as a brake to keep a runaway server from taking
> # the system with it as it spirals down...
> #
> MaxClients 150
>
> #
> # MaxRequestsPerChild: the number of requests each child process is
> # allowed to process before the child dies. The child will exit so
> # as to avoid problems after prolonged use when Apache (and maybe the
> # libraries it uses) leak memory or other resources. On most systems, this
> # isn't really needed, but a few (such as Solaris) do have notable leaks
> # in the libraries. For these platforms, set to something like 10000
> # or so; a setting of 0 means unlimited.
> #
> # NOTE: This value does not include keepalive requests after the initial
> # request per connection. For example, if a child process handles
> # an initial request and 10 subsequent "keptalive" requests, it
> # would only count as 1 request towards this limit.
> #
> MaxRequestsPerChild 200
>
> #
> # DocumentRoot: The directory out of which you will serve your
> # documents. By default, all requests are taken from this directory, but
> # symbolic links and aliases may be used to point to other locations.
> #
> DocumentRoot /usr/local/jakarta-tomcat-3.3.1/webapps/ROOT
>
> # This should be changed to whatever you set DocumentRoot to.
> #
> <Directory "/usr/local/jakarta-tomcat-3.3.1/webapps/ROOT">
>
> #
> # This may also be "None", "All", or any combination of "Indexes",
> # "Includes", "FollowSymLinks", "ExecCGI", or "MultiViews".
> #
> # Note that "MultiViews" must be named *explicitly* --- "Options All"
> # doesn't give it to you.
> #
> Options indexes includes followSymLinks
>
> #
> # This controls which options the .htaccess files in directories can
> # override. Can also be "All", or any combination of "Options", "FileInfo",
> # "AuthConfig", and "Limit"
> #
> AllowOverride None
>
> #
> # Controls who can get stuff from this server.
> #
> Order allow,deny
> Allow from all
> </Directory>
>
> # Include TOMCAT
> Include /usr/local/jakarta-tomcat-3.3.1/conf/auto/mod_jk.conf-local
>
>
>
> ----------------- mod_jk.conf-local -----------------
>
>
> ########## Auto generated on Tue Apr 30 11:47:40 WEST 2002##########
>
> <IfModule !mod_jk.c>
> LoadModule jk_module libexec/mod_jk.so
> AddModule mod_jk.c
> </IfModule>
>
> JkWorkersFile "/usr/local/jakarta-tomcat-3.3.1/conf/jk/workers.properties"
> JkLogFile "/usr/local/jakarta-tomcat-3.3.1/logs/mod_jk.log"
>
> JkLogLevel error
>
>
>
> #################### /WebApplication ####################
>
> # Static files
> Alias /WebApplication
> "/usr/local/jakarta-tomcat-3.3.1/webapps/WebApplication"
>
> <Directory "/usr/local/jakarta-tomcat-3.3.1/webapps/WebApplication">
> Options Indexes FollowSymLinks
> DirectoryIndex index.jsp index.html index.htm
> </Directory>
>
>
> # Deny direct access to WEB-INF and META-INF
> #
> <Location "/WebApplication/WEB-INF/*">
> AllowOverride None
> deny from all
> </Location>
>
> <Location "/WebApplication/META-INF/*">
> AllowOverride None
> deny from all
> </Location>
>
> JkMount /WebApplication/servlet ajp13
> JkMount /WebApplication/servlet/* ajp13
> JkMount /WebApplication/*.jsp ajp13
>
> #################### / ####################
>
> # Be sure to update DocumentRoot
> # to point to: "/usr/local/jakarta-tomcat-3.3.1/webapps/ROOT"
> <Directory "/usr/local/jakarta-tomcat-3.3.1/webapps/ROOT">
> Options Indexes FollowSymLinks
> DirectoryIndex index.jsp index.html index.htm
> </Directory>
>
>
> # Deny direct access to WEB-INF and META-INF
> #
> <Location "/WEB-INF/*">
> AllowOverride None
> deny from all
> </Location>
>
> <Location "/META-INF/*">
> AllowOverride None
> deny from all
> </Location>
>
> JkMount /servlet ajp13
> JkMount /servlet/* ajp13
> JkMount /*.jsp ajp13
>
>
> ------ server.xml ------
> .
> .
> .
> <ApacheConfig forwardAll="false" noRoot="false" jkDebug="error"/>
> <IISConfig noRoot="false" />
> <NSConfig noRoot="false" />
>
> <!-- ==================== Connectors ==================== -->
>
> <Http10Connector port="8080"
> secure="false"
> maxThreads="200"
> maxSpareThreads="50"
> minSpareThreads="10" />
>
> <Ajp12Connector port="8007" />
>
> <Ajp13Connector port="8009"
> maxThreads="300"
> maxSpareThreads="100"
> minSpareThreads="10" />
> .
> .
> .
>
> _________________________________________________________________
> MSN Photos is the easiest way to share and print your photos:
> http://photos.msn.com/support/worldwide.aspx
>
>
> --
> To unsubscribe: <ma...@jakarta.apache.org>
> For additional commands: <ma...@jakarta.apache.org>
> Troubles with the list: <ma...@jakarta.apache.org>
>
>
--
To unsubscribe: <ma...@jakarta.apache.org>
For additional commands: <ma...@jakarta.apache.org>
Troubles with the list: <ma...@jakarta.apache.org>