Load testing question

[Howard Jim <Ho...@JohnDeere.com>]

Hello,

I am running tomcat 4.1.18 using modjk2 from apache 2.0.46.

I have been doing some playing around with Jmeter, running some scenarios against the application.  Apache is setup to only handle the SSL and connections, with everything being passed to Tomcat, including static pages and images (Legacy setup).

I can simulate a few users without much problem.  I have logging turned up pretty good, and am tailing the apache log for one.  It is showing me all the handoffs from apache to tomcat through the connector.  Here is a sample of what I think is standard running in steady state:

[Thu Dec 11 16:33:53 2003] [notice] jk2_init() Found child 19943 in scoreboard slot 49
[Thu Dec 11 16:33:53 2003] [notice] workerEnv.init() ok /dta1/webs/agPrograms/conf/workers2.properties
[Thu Dec 11 16:33:53 2003] [notice] workerEnv.init() create slot epStat.49
[Thu Dec 11 16:33:57 2003] [notice] mod_jk2 Shutting down
[Thu Dec 11 16:34:00 2003] [notice] jk2_init() Found child 19945 in scoreboard slot 32
[Thu Dec 11 16:34:00 2003] [notice] workerEnv.init() ok /dta1/webs/agPrograms/conf/workers2.properties
[Thu Dec 11 16:34:00 2003] [notice] workerEnv.init() create slot epStat.32
[Thu Dec 11 16:34:02 2003] [notice] mod_jk2 Shutting down
[Thu Dec 11 16:34:07 2003] [notice] mod_jk2 Shutting down
[Thu Dec 11 16:34:12 2003] [notice] mod_jk2 Shutting down
[Thu Dec 11 16:34:14 2003] [notice] jk2_init() Found child 19952 in scoreboard slot 13
[Thu Dec 11 16:34:14 2003] [notice] workerEnv.init() ok /dta1/webs/agPrograms/conf/workers2.properties
[Thu Dec 11 16:34:14 2003] [notice] workerEnv.init() create slot epStat.13
[Thu Dec 11 16:34:17 2003] [notice] mod_jk2 Shutting down

etc.  Everything appears to be working well.  The Catalina log appears to contain what I would expect.

When I increase the load, I see a new line appear every so often:

[Thu Dec 11 16:35:27 2003] [error] mod_jk child init 1 0


I have 2 questions.  First, does the first part of the log look reasonable?  2) What does this [error] entry really mean?  I have done all sorts of google searches, read the jakarta site from front to back, etc, and I still don't seem to get it.

Thanks for your time.

Jim


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