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From "Jeff Tulley" <>
Subject Re: Memory leak- yeah I know
Date Wed, 14 Jan 2004 23:03:49 GMT
How heavy of a load does this generate, in terms of # of req/s?

>>> 1/14/04 3:49:00 PM >>>
Ok, I know that these emails are usually dismissed with the words:
"Gets us some proof from a profiler", and I will...gimme some time, in
meanwhile, if anyone else wants to play with it.

well the story is that during heavy load tests of the session
replication my
system my VMs always run out of memory.
What am I doing different than others, well, during my load tests I am
using keep alive connections to achieve true round robin. I'm doing
this by
setting method.setHttp11(false) in the Http client.

Running the test (attached, instructions below) I am hitting
http://localhost:8080/index.jsp (home page) and watching the memory
grow and
grow and grow.

I am using a profiler and having somewhat of a hard time reading the
I am gonna download a trial of jprobe, see how that works out for me...
will be back with results from that.

in the meantime, for those who want to see their memory grow here are

My env:
Machine: PIII 1.6Ghz, 512MB Ram
OS: Redhat 8
VM: Sun JDK 1.4.2_02 (build 1.4.2_02-b03)

download the attached client.jar

java -cp testclient.jar;commons-httpclient.jar;commons-logging.jar
org.apache.catalina.cluster.test.client.MemTestClient http
:// 100 100000 1000 false (exchange ; for :

Watching the memory grow using Top, although it shouldn't increase at


Jeff Tulley  (
Novell, Inc., The Leading Provider of Net Business Solutions

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