Re: Disabling HotSpot to get Xalan and Xerces to remain stable under load

[Kevin McKenzie <km...@silverstream.com>]

Thanks Pierpaolo for your suggestion to turn off the HotSpot compiler.  That
did indeed make the intermittent error go away...or at least lessened the
likelihood of the problem so that we do not see the error during our load
testing.

The trick of turning off HotSpot, while easy enough to implement, certainly
begs the question "Why?".  What is it about HotSpot that manifests these
intermittent errors?  What is it about Xalan and Xerces that is sensitive to
HotSpot?  Or is the problem with HotSpot itself?  I am curious.

I work at SilverStream Software, and the Xalan and Xerces software provides
important functionality for us.    If you think there is a problem in
HotSpot, I would be interested in getting details, as we have done a lot of
work getting our application server running on HotSpot and may be able to
help.

If there are issues, we want to know all there is to know about them, and
not settle for a quick fix without a deeper understanding.

Thanks in advance,
Kevin

----- Original Message -----
From: Pierpaolo Fumagalli <pi...@apache.org>
To: <xa...@xml.apache.org>
Sent: Sunday, March 26, 2000 7:12 AM
Subject: Re: Exception under load


> > Kevin McKenzie wrote:
> >
> > We are using xalan_0_20_0 with xerces-1_0_3 to transform XML into
> > HTML.  Our application runs well until we put it under load.  With 10
> > users running the same test script (some parser.getDocument and
> > processor.process calls), it only takes a couple of minutes to produce
> > the following stack trace:
> >
> > [..]
> >
> > Any ideas/suggestions on what to look at in order to fix this?
>
> I bet you're using Sun's HotSpot... If so, try to disable it :)
>
> Pier
>
> --
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