I have to wonder if the deploy takes a lot of memory for a short period of time. This would cause other applications to page out, but by the time you look at memory the deploy has finished using most of it.
-----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of James Melin Sent: Thursday, February 24, 2005 12:47 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Anyone running WebSphere under linux on z/Series AND using wsadmin scripts for application deployment? Linux on 390 Port <LINUX-390@VM.MARIST.EDU> wrote on 02/24/2005 11:48:57 AM: > Java does garbage collect. The garbage collection occurs when an object is > no longer referenced. If an application is building data structures > (perhaps collections, arrays etc of objects), then they all hang around. > If the application is going in some kind of loop or launching multiple > threads that may not be synchronizing, the accumulated baggage could > balloon. You have to look at stack trace or use some Java debugging > features to find out how the memory usage is growing. > > Are you able to identify the offending application (servelet or applet)? That's the maddening thing. It doesnt appear to be an application per-se. It's happenign when an application is deployed to a server whether or not you use the batch script or the admin console gui. I've penned a missive to IBM but have not heard back yet. > > There should be enough java tools to check for this kind of problems. > > BTW, I am a perler and I know little about Java. > __________________________________________ > Ranga Nathan / CSG > Systems Programmer - Specialist; Technical Services; > BAX Global Inc. Irvine-California > Tel: 714-442-7591 Fax: 714-442-2840 > > > > > James Melin <[EMAIL PROTECTED]> > > Sent by: Linux on 390 Port <LINUX-390@VM.MARIST.EDU> > 02/24/2005 08:53 AM > Please respond to > Linux on 390 Port <LINUX-390@VM.MARIST.EDU> > > > To > LINUX-390@VM.MARIST.EDU > cc > > Subject > Re: Anyone running WebSphere under linux on z/Series AND using wsadmin > scripts for application deployment? > > > > > > > Linux on 390 Port <LINUX-390@VM.MARIST.EDU> wrote on 02/24/2005 10:44:10 > AM: > > > On Feb 24, 2005, at 10:32 AM, James Melin wrote: > > > > > > What I'm trying to figure out is.... how does an application with a > > > 448 meg > > > memory footprint come to use more than a gig of swap space? > > > > > > Shutting down a process should only free up the memory it was using > > > that > > > happened to be swapped out correct? > > > > > > So how does shutting down all of WebSphere get the gig of swap space > to > > > come back? > > > > > Because it's not the Websphere process itself, but one of its children, > > that's leaking memory like that. One of your application programmers > > needs to be taken behind the woodshed and soundly hided, because some > > program somewhere is leaking badly. > > Ok.. how do I prove what part is leaking? It does this no matter what > application we deploy. Whether we deploy it via the administration console > or the wsadmin script....I don't see this during application execution... > only during the deployment process. It's driving me batty. > > > > > Remember that Java was supposed to stop all that because it's > > garbage-collected? Hah. > > > > Adam > > > > ---------------------------------------------------------------------- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
