JRun can only use as much memory as you let it when you configure the JVM it
runs in. If you didn't configure anything, then Sun 1.2/1.3 JVMs use 64 MB
max memory, and IBM JVMs use 1/2 physical RAM max. But they don't allocate
all that memory unless they need it.
What do you mean by "15 Java instances?" That could help clarify what we're
talking about. I would take Java instance to mean an instance of the JVM,
which would imply 15 instances of JRun. Where are you reading that there
are 15 instances of Java? And how did you determine the memory usage?
Scott Stirling
West Newton, MA
-----Original Message-----
From: Eric Larson [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 12, 2000 11:33 AM
To: JRun-Talk
Subject: Number of JVM Instances
Can anyone outline what determines the number of Java instances that are
running? I have a site that runs apache/jrun and averages about 23 apache
instances that occupy about 100MB of RAM and 15 Jave instances that use
about 200 MB of RAM. A connection to Jrun is established in one of the
apache virtual hosts directive blocks.
Most of the site currently uses PHP; I am porting the rest to JSP. The
small portion of the site that is currently running under JRun handles
perhaps 50-100 page views per day. The number of Java instances and memory
consumption thereof seems to be way out of proportion to the requirements.
Any ideas on tuning under this circumstance?
-Eric
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