Re: Servlet Load Times under WAS on an iSeries!

["Bruce Jin" <brucej@xxxxxxxxxxxxxxxxxxxx>]

It is noted that Sal's Tomcat is on a PII 233 PC with 64 Mb RAM and his
WebSphere is on an iSeries 270-2248 with 512 Mb RAM. The servlet running on
Tomcat outperforms the servlet on WebSphere significantly (in terms of start
up).
Bruce



----- Original Message -----
From: "Joe Pluta" <joepluta@PlutaBrothers.com>
To: <java400-l@midrange.com>
Sent: Wednesday, September 12, 2001 9:19 AM
Subject: RE: Servlet Load Times under WAS on an iSeries!


> I talked to Sal about this offline, just to make sure I understood, and we
> came to the conclusion that it's probably his machine.  Sal's running a
> 270-2248, and we've both heard whispers that it doesn't have an L2 cache,
> unlike my 270-2250.  Also the 2248 has a CPW of 150, and the 2250 has a
CPW
> of 370, and my machine has twice the memory of Sal's.
>
> All these together make my machine run maybe 10 times faster on an initial
> servlet load.  There's little or nothing that can be done about that,
short
> of preloading the servlets.
>
> I think we'd all appreciate hearing from anybody else about this,
especially
> the L2 cache issue.
>
> Joe
>
>
> > -----Original Message-----
> > From: Sal Stangarone Jr.
> > Sent: Wednesday, September 12, 2001 10:02 AM
> > Subject: Servlet Load Times under WAS on an iSeries!
> >
> > I have some simple servlets that I've deployed on our iSeries
> > under both WAS
> > 2.02 and 3.5.2 and in both instances the initial load times are
> > unacceptable
> > (15 seconds or more).  Once loaded they perform well (under 2 seconds).
I
> > know I can have the Servlets loaded as part of the WAS startup but I
don't
> > understand why these servlets take so long to load on our iSeries.  I've
> > deployed the same servlets to a standalone PC utilizing Tomcat as
> > the server
> > and I see minimal (under 5 seconds) startup time needed there even
though
> > its a small PII 233 PC.
> >
> > I have tried optimizing my class file to opt 40 and while that has some
> > effect it's minimal.  Has anyone else experienced this?  Is this WAS or
my
> > iSeries any ideas?
>
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