Tomcat 4.1.12 & controlling Threads on Linux

[geolaw]

We are running Tomcat 4.1.12 on RH 7.2 machines with
the blackdown 1.3.1 JDK. We are currently running the
JVM with the -green option to force green threads (ie - a
single thread).

Looking at some past posts to this forum and also at
"Professional Apache Tomcat" by Chopra, Galbraith,Li etal
the options minProcessors, maxProcessors, maxThreads,
maxSpareThreads, and minSpareThreads seem like they should
control the number of java threads tomcat runs with.

Trouble is, I can adjust these all day (until the cows come
home) and I always have 20 java processes/threads.

This is with a single <host> with a single <connector>.
Adding another <host> adds 5 more processes/threads.

Is there anyway to reliably control the number of threads
tomcat starts?

TIA