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This could be the JVM garbage collecting. I have seen this 
on java apps as well.

Don Pierce wrote:
> 
> ----------------------------------------------------------------
> BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> WHEN YOU POST, include all relevant version numbers, log files,
> and configuration files.  Don't make us guess your problem!!!
> ----------------------------------------------------------------
> 
> So once you enlarged the disk space the problem went away?
> I have a couple gig available so I guess that is not my problem.
> 
> Thanks anyway
> 
> Don
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of CN Davies
> > Sent: Monday, July 24, 2000 11:11 AM
> > To: Java Apache Users
> > Subject: Re: JVM and 50% CPU usage
> >
> >
> > ----------------------------------------------------------------
> > BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> > WHEN YOU POST, include all relevant version numbers, log files,
> > and configuration files.  Don't make us guess your problem!!!
> > ----------------------------------------------------------------
> >
> > I Had a similar problem with JavaWebserver when we were running low on
> > disk space on C:  Jrew was dominating the CPU so much it would take 5
> > minutes to simply log in.
> >
> > Chris
> >
> > On Sun, 23 Jul 2000 21:28:52 -0700, Don Pierce wrote:
> >
> > >----------------------------------------------------------------
> > >BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> > >WHEN YOU POST, include all relevant version numbers, log files,
> > >and configuration files.  Don't make us guess your problem!!!
> > >----------------------------------------------------------------
> > >
> > >I recently installed the following:
> > >1.3.12 and JServ 1.1.2 on NT4 with  JDK 1.1.8
> > >
> > >All seems to run fine and the CPU is about 3-5%
> > >Very low - then at random times it will jump
> > >to 50% and I find that java.exe is what is
> > >using it.
> > >
> > >I see no real correlation in any of the error logs
> > >to these CPU jump events. The server still running fine
> > >but I have had Apache JServ lose it's connection to
> > >Apache a couple times (usually after a couple hours at 50%).
> > >I have even had it run at 50% for 2 days and have had no problems.
> > >
> > >Anyone seen this before?
> > >What kind of tools could I use to diagnose the problem?
> > >The performance monitor does not help much in this case.
> > >
> > >Don
> > >
> > >
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-- 
Chris Cheshire
Manager of Software Development
bigredwire.com
Phone : +1 805 560 6666 (w)
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   Real Programmers don't draw flowcharts. 
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   look at how much good it did for them


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