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From "Jon Peterson" <jon.peter...@sdrc.com>
Subject Re: Getting read of the X server dependency
Date Thu, 16 Aug 2001 13:31:06 GMT
Thanks for the input!

In our situation, we incorporate SVG as a fo:instream-foreign-object so I
can't remove the dependency.  Does anyone have any advice on how we can
improve the configuration (for instance, different Xvfb parameters maybe?)
or is it solely a function of the OS/version, JVM/version and X/version?

Thanks...Jon

----- Original Message -----
From: "java guru" <javacocoon@yahoo.co.in>
To: <cocoon-users@xml.apache.org>
Sent: Thursday, August 16, 2001 9:15 AM
Subject: Re: Getting read of the X server dependency


> That is very true.,
>    I took out the batik stuff BECAUSE all of my
> project could be re-arranged with static graphics
> instead of svg..I would recommend to use it only if
> its absolutely necessary...
>    There was substantical load decrease on server
> after i took out batik...
>
> And load testing is absolutely important...
>
> have good time..
>
>  --- Berin Loritsch <bloritsch@apache.org> wrote: >
> Jon Peterson wrote:
> > >
> > > Xvfb is what you need.  If you're running Linux,
> > you may already have it
> > > available (do which Xvfb or slocate Xvfb to
> > check).  If not, go to
> > > Xfree86.org and download either the Xvfb component
> > of X (if you have XServer
> > > installed) or grab the entire X Server and run
> > Xinstall.sh.  If you're
> > > running Solaris, go to
> > >
> >
> http://tmap.pmel.noaa.gov/home/ferret/FAQ/graphics/Solaris_Xvfb.html
> > for the
> > > binaries.
> >
> > That takes care of part of the problem.  Please, I
> > highly recommend stress
> > testing that setup.  Any time you are dependant on
> > the interactions between
> > two highly complex beasts (JVM and X windows
> > server), there are bound to be
> > synchronization issues and other bugs that are
> > beyond the control of Cocoon!
> >
> > Consider the load you are expecting, and test for
> > twice that number.  It is
> > more important that you test for concurrency than
> > for sequential access.  If
> > you expect 100 simultaneous users during peek time,
> > test for 200 users.  Use
> > realistic settings, but test nonetheless.
> >
> > Keep in mind that any time you incorporate SVG using
> > FOP or Batik, then you
> > are going to use the X windows server.
> >
> > If you have _any_ serializers that use Batik (i.e.
> > svg2png, svg2jpg), you are
> > going to require the use of Batik.
> >
> > In some instances the setup will be perfectly
> > stable--but some platforms will
> > prove unstable.  It all depends on the
> > implementation of X Windows and the
> > implementation of the JVM.
> >
> > When JDK 1.4 becomes stable, the promise of Headless
> > servers will be realized,
> > and Batik can be used without precaution.
> >
> > >
> > > Once installed, on the command-line run
> > >
> > > /usr/X11R6/bin/Xvfb :1 -screen 0 1152x900x8 &
> > >
> > > and then set the DISPLAY variable to :1.0
> > >
> > > This should take care of your problem and allow
> > you to keep batik's
> > > functionality.
> > >
> > > Regards,
> > > Jon
> > >
> > > ----- Original Message -----
> > > From: "Carlos" <carlos@cvc.edu>
> > > To: "cocoon users xml.apache.org"
> > <cocoon-users@xml.apache.org>
> > > Sent: Wednesday, August 15, 2001 4:49 PM
> > > Subject: Getting read of the X server dependency
> > >
> > > > A while back some people gave solutions as to
> > how to remove the dependency
> > > > on a running X server. Some of them included
> > removing all the references
> > > to
> > > > Batik from the site map, others included
> > downloading a library that would
> > > > make X unnecessary, what's the name of the
> > library and where can I
> > > download
> > > > it from?
> > > >
> > > >
> > > > TIA
> > > > Carlos
> > > >
> > > > --
> > > > ---
> > > > P  |Carlos Araya
> > > > _  |WebCT Administrator/Trainer
> > > > G  |California Virtual Campus, Region 1
> > > > ---- C/O De Anza College
> > > > 10650 Bubb Road
> > > > Cupertino, CA 95014
> > > >
> > > > mail:       carlos@cvc.edu
> > > > web:        http://www.cvc1.org (work)
> > > >             http://www.silverwolf-net.net
> > (personal)
> > > > PGP Fingerprint:     E629 5DFD 7EAE 4995 E9D7
> > 3D2F 5A9F 0CE7 DFE7 1756
> > > >
> > > > Don't let the fact that you can't do all you
> > want to do Keep you from
> > > > doing what you can do.
> > > >
> > > > And oftentimes, excusing of a fault doth make
> > the fault the worse by the
> > > > excuse; As patches set upon a little breach
> > discredit more in
> > > > hiding of the fault than did the fault before it
> > was so patched.
> > > > --Wm. Shakespeare
> > > >
> > > >
> > > >
> > > >
> >
> ---------------------------------------------------------------------
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> =====
> Thanks and have great day
> srini
>
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