RE: WebSphere problems on AS/400 temporary storage increasing. -- WEB400

I did some research on temporary storage, and here's what I've found:

Loading classes into the JVM takes up unprotected memory, and so does
instantiating objects.  This of course makes sense.  However, I've found
that once I get past the initial hits (in my case, about a gig of storage),
the amount of unprotected memory used doesn't increase.  Again, remember
that I'm not using SQL, I'm using a message-based client/server design.  No
cursors hanging about or anything like that.

Now, if you DO have a problem with memory that is related to the JVM and
your unprotected memory usage is getting too high, I've found that simply
bouncing the server releases the unprotected memory, and all is well with
the world.

Joe


> -----Original Message-----
> From: owner-web400@midrange.com [mailto:owner-web400@midrange.com]On
> Behalf Of Stone, Brad V (TC)
> Sent: Friday, March 30, 2001 7:18 AM
> To: 'WEB400@midrange.com'
> Subject: RE: WebSphere problems on AS/400 temporary storage increasing.
>
>
> We're not talking about temporary address space usage.  We were
> referring to
> Current unprotect used under Auxillary storage.
>
> Brad
>
> > -----Original Message-----
> > From: Joe Pluta [mailto:joepluta@PlutaBrothers.com]
> > Sent: Thursday, March 29, 2001 5:04 PM
> > To: WEB400@midrange.com
> > Subject: RE: WebSphere problems on AS/400 temporary storage
> > increasing.
> >
> >
> > Hmmm... I've been running WebSphere for some time now.  I've
> > currently got
> > over 7500 seconds CPU time (not a lot, I know, but bear with
> > me) between my
> > server instance and the admin instance since my last IPL.
> > Total temporary
> > address space usage?  .009% (yeah, two zeros).  By straight
> > extrapolation,
> > (and this assumes that ALL address space usage so far is
> > WebSphere), at 100%
> > CPU utilization for WebSphere I'd get to 90% temp address usage in...
> > 75,000,000 seconds, or about two and a half years.
> >
> > So why is my usage so low compared to other quotes?  I can't
> > be sure, but
> > one glaring difference is that I don't use SQL at all.  All
> > my webserving is
> > done via messages to RPG back end programs.  I'm no
> > performance expert, but
> > I think you might want to do a little more checking before pinpointing
> > WebSphere as the sole problem.
> >
> > Joe
> >
> >
> > > -----Original Message-----
> > > From: owner-web400@midrange.com [mailto:owner-web400@midrange.com]On
> > > Behalf Of Andrew Borts
> > > Sent: Thursday, March 29, 2001 8:35 AM
> > > To: 'WEB400@midrange.com'
> > > Subject: RE: WebSphere problems on AS/400 temporary storage
> > increasing.
> > >
> > >
> > > Hmmm - I run Net.Data mostly on the old version of Net.Commerce
> > > which is running JUST fine...
> > > Also CGI scripts ... SMOKIN!
> > > RPG does a lot guys!
> > > Is there a problem with WAS 3.0.2 Should I unload this (just
> > > loaded it yesterday!)
> > > I don't want to convert to bringing the site down almost NEVER (@
> > > 8,000 to 20,000 visitors a day!) to killing it on the hour.
> > >
> > > I hope IBM reads this, and heeds this information, because if WAS
> > >  is not stable, that is a business reason NOT to apply this.
> > >
> > > Andrew Borts / E-Commerce Project Leader
> > > Seta Corporation
> > > 6400 East Rogers Circle
> > > Boca Raton, FL 33499
> > >
> > > E-mail: Andrewb@setacorporation.com
> > > Corporate web site http://www.setacorporation.com
> > > E-Commerce web site http://www.palmbeachjewelry.com
> > > Voice: 561-994-2660 Ext. 2211 / Fax: 561-997-0774
> > >
> > >
> > > -----Original Message-----
> > > From:     GRIFFITHS, Clive [SMTP:GRIFFIC@aisl.uk.com]
> > > Sent:     Thursday, March 29, 2001 5:26 AM
> > > To:       'WEB400@midrange.com'
> > > Subject:  RE: WebSphere problems on AS/400 temporary storage
> > > increasing.
> > >
> > >  << File: ATT00005.htm >> Thanks Bleddyn,
> > >
> > >   I was afraid of that. I have a call open with ASSIST
> > and all they
> > > provide is lists of PTFs which we have already got e.t.c.
> > They are aware
> > > that it is a problem which renders our websites useless. We
> > are about to
> > > upgrade one of our servers to V4R5M0 and Websphere 3.5
> > today to see if it
> > > eleviates the problem. I will let you know how I get on.
> > >
> > > Regards,
> > >
> > > Clive.
> > >
> > > -----Original Message-----
> > > From: Bleddyn Williams [mailto:bleddyn@morpheus.ltd.uk]
> > > Sent: Thursday, March 29, 2001 11:05 AM
> > > To: WEB400@midrange.com
> > > Subject: RE: WebSphere problems on AS/400 temporary storage
> > increasing.
> > >
> > >
> > > Clive unprotected use is one of those things that you have to get
> > > used to it
> > > seems :( Its down to the SQL server jobs and the SQL being
> > used by WAS,
> > > although there may also possibly be a memory leak or code that needs
> > > tightening up. I see exactly the same with WebSphere Commerce
> > > Suite and when
> > > running WAS 3.5.2. I did take up the issue with IBM at one point
> > > on WCS, and
> > > over the course of a year they never came back with any
> > good reasons as to
> > > where all the space goes apart from SQL usage. In WAS 2.X you
> > > will have more
> > > of an issue because the jobs are in process on the HTTP server,
> > > so to clear
> > > the resource you have to end the webserver.
> > >
> > > I have seen recommendations for disk space mentioning the
> > temporary store
> > > usage. I also get to the point where an IPL is the best way to
> > > clean it all
> > > down because stopping and starting isn't giving me all the
> > space back.
> > >
> > > Thanks Bleddyn
> > >
> > > http://www.morpheus.co.uk - Morpheus - eBusiness Solutions
> > >
> > > http://www.ignite400.org - iSeries eBusiness User Group
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: owner-web400@midrange.com
> > > [mailto:owner-web400@midrange.com]On Behalf
> > > Of GRIFFITHS, Clive
> > > Sent: 29 March 2001 10:44
> > > To: WEB400@midrange.com
> > > Subject: Webshpere problems on AS/400 temporary storage increasing.
> > >
> > >
> > > 3 * AS/400 170 V4R4M0 Websphere 2.03. We run 4 instances
> > and intermitantly
> > > are seeing current unprotected used increase until an IPL is
> > > needed the only
> > > way to stop it increasing is to ENDTCPSVR *HTTP HTTPSVR(*ALL)
> > > Has anyone else seen this ???? This happens 10 - 15 times a
> > day on each
> > > AS/400 ?
> > > Regards,
> > > Clive.
> > >
> > > +---
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