Can you post the workers.properties file? I use equal lblweight (I think that is the name of the property) set to 100 for the 4 Tomcat instances.
I have a nearly identical setup: twp Apache 1.3.27 server running on Redhat 7.3 load balancing across 4.0.6 Tomcat instances running on two Solaris 8 servers. We have no performance issues and I am using the default Processor settings in server.xml. We go through roughly 1 million hits a month. HTH, Ben Ricker On Wed, 2003-01-15 at 11:04, YOU, JERRY (SBCSI) wrote: > Hi, > I installed the Apache1.3.27, mod_jk1.2.1 and Tomcat4.1.18 recently on our > Solaris6 machine. The approach is that let 1 apache as web server dispatches > requestes to the 3 tomcat server instances. There is no error in the > configuration, > and install. But when I was load-testing the application, I noticed that > there were > lots of error message shown in the mod_jk file, although all the requests > were > dispatched to the tomcat servers and responded with 200. > > I then changed the 3 tomcat servers' configure as following: > <Connector className="org.apache.ajp.tomcat4.Ajp13Connector" > port="11009" minProcessors="1" maxProcessors="1" > acceptCount="10" debug="1"/> > So now every Tomcat can only accept 1 request at the same time. > I then sent 3 concurrent requests to the cluster: tomcat21, tomcat22, > tomcat23. > >From the debug/log file, I think the mod_jk and tomcats are working like : > 1, 3 requests reaches mod_jk, mod_jk sends requests to tomcat21 > 2, tomcat21 accepts the first one and rejects the other 2, > 3, mod_jk logs errors in mod_jk.log, reports the tomcat is down or network > problem. > 4, mod_jk then sends the 2 to tomcat22 > 5, tomcat22 accepts 1 and rejects the other. > 6, mod_jk again logs errors. > 7. mod_jk sends the alst one to tomcat23, > 8, tomcat 23 accepts it. > > I think there is nothing wrong with this procedure, but besides the annoying > error messages, > the whole performance is poor due to the time spent in the probes. I also > suspect that > the socket connection in Solaris6 is too slow, for some reason. > > I have questions for those who have the tomcat cluster in there production > site: > how about the performance in your site? Is there anything wrong with my > configuration or should > I use JK2 to improve performance? > > The configuration files and log files are attached with this email. > > OS: Solaris 6 > Apache1.3.27, Tomcat 4.1.18, mod_jk1.2.1( I can not find the binary mod_jk > at the apache.org site > under solaris6 directory, so, I download the one in Solaris8 dir). > > Thanks, > > Jerry You <<tomcat_23_catalina.log>> <<the_change_to_httpd.conf>> > <<workers.properties>> <<change_to_tomcat21_server.xml>> > <<tomcat_21_catalina.log>> <<tomact_22_catalina.log>> > > ______________________________________________________________________ > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- Ben Ricker <[EMAIL PROTECTED]> Wellinx.com -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
