Howdy,
I'd suggest searching the list archives, as linux memory and other
resource reporting (using top, vmstat, etc) are not accurate with
respect to java threading.  Or rather, they are accurate but
counter-intuitive to interpret.  This issue has been covered numerous
times (I've explained it at least three times) on this list in the past.

Yoav Shapira
Millennium ChemInformatics


>-----Original Message-----
>From: Deon de Villiers [mailto:[EMAIL PROTECTED]
>Sent: Wednesday, March 05, 2003 6:03 AM
>To: [EMAIL PROTECTED]
>Subject: Tomcat Java Processes consuming loads of memory and file
handles
>
>Hi Tomcat Users
>
>I am a newbie to Tomcat and in fact just happen to be the server
>administrator - don't do (or know much about) any JSP / Java stuff
>myself so please excuse any ignorance.
>
>Server Config:
>Linux Redhat 7.0 (quite heavily patched)
>Apache: 1.3.26
>Tomcat: 4.0.4
>Java:   2sdk-1.4.0
>JRE:   1.4.0_01
>
>The first problem encountered was that the file-max setting on the
>server was being reached.  I noticed that the tomcat java processes
were
>using a lot of memory and as soon as I shut tomcat down the allocated
>file handles stopped growing.
>
>What I have now noticed is that the memory used by the java processes
>starts climbing as soon as Tomcat is started and just never stops
>(restarted Tomcat when it had reached 256Mbytes).
>
>The thing about all this is that there are only about 2 JSP pages on
the
>entire server and the memory and file handles are consumed even if
these
>pages are not even accessed???  ie. as soon as Tomcat starts up the
>memory is grabbed and never stops.
>
>Please help.  I have
>
>Thanks
>Deon.
>
>
>
>
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