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From "Turoff, Steve" <>
Subject Tomcat Memory Problems and WebTrends
Date Fri, 25 Apr 2003 21:04:37 GMT

I am running Tomcat 4.1.24 and Apache/1.3.19 (Unix)  (Red-Hat/Linux). Every night, a WebTrends
server makes a request to every page in the Apache access_logs. I believe this is to obtain
the HTML title for the WebTrends reports. I've noticed that when WebTrends makes it's requests,
Tomcat's memory starts to climb dramatically. I modified httpd.conf to pipe the access_logs
into a script I wrote which outputs the line from the access_log (actually a shorter custom
Format) and the amount of memory that Tomcat is using. I've attached a sample at the end of
this email. As you can see from 03:36:59 AM to 04:01:15, Tomcat's memory almost doubles. On
some nights, Tomcat actually stops accepting requests and I have to kill all of the java processes
in order to restart Tomcat. I've attempted to recreate this problem using The Grinder (load
tester), but cannot do so.

Can anyone think of why requests from WebTrends would cause this problem?


Steven Turoff
Peoples Health Network
200 W. Esplanade Ave., Suite 600
Kenner, Louisiana 70065
tel: 504.461.9800 ext. 4363
fax: 461.9809


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