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Message-ID: <20010705084412.30540.qmail@web14505.mail.yahoo.com>
Date: Thu, 5 Jul 2001 01:44:12 -0700 (PDT)
From: Mukul Gandhi <mukulw3@yahoo.com>
Subject: Re: AW: AW: Performance problem with Tomcat 3.2 on NT
To: tomcat-user@jakarta.apache.org
In-Reply-To: <JPECKJPCBMHANPFBNJJMIEJPCIAA.thomas.bezdicek@engnetworld.com>
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Oracle XDK is rated one of the best XML products. I
guess it competes fairly on performance with other
parsers. It provides many other useful tools for XML
processing apart from the XML parser.

Regards
mukul

--- Thomas Bezdicek <thomas.bezdicek@engnetworld.com>
wrote:
> the problem is more likely the oracle XDK use some
> other
> xml-parser (xalan, jaxp) instead. we experianced at
> our
> performance testing that it is the absolute slowest
> xml-
> parser (version for 8.1.7, dont know about 9.0.1)
> 
> reagrds, tom
> 
> > -----Ursprungliche Nachricht-----
> > Von: Mukul Gandhi [mailto:mukulw3@yahoo.com]
> > Gesendet: Mittwoch, 4. Juli 2001 19:06
> > An: tomcat-user@jakarta.apache.org
> > Betreff: Re: AW: Performance problem with Tomcat
> 3.2 on NT
> > 
> > 
> > I am not storing heavy data in sessions(just
> integer
> > IDs). But in my servlet, i do parse the XML using
> > standard XML parser(Oracle XDK) and manipulate the
> DOM
> > tree generated from it. But is,nt it, when servlet
> > finishes execution, the DOM tree corresponding to
> the
> > XML must be freed from memory ;) and whole memory
> > should be available to subsequent requests. I am
> > making JDBC calls from the servlet, but I close
> the
> > connections before returning result to the
> browser.
> > Is NT environment the problem ? Has anybody
> > experianced a similar problem ? Would the same
> > application run better on Unix ?
> > 
> > Regards
> > mukul
> >  
> > 
> > --- Thomas Bezdicek
> <thomas.bezdicek@engnetworld.com>
> > wrote:
> > > most likely you cache something, either the
> servlet
> > > sessions, the xml - dom trees or maybe the
> > > connection 
> > > and the resultsets (maybe implicit by the jdbc
> > > driver) 
> > > this results in an enormous ram problem which
> > > actually 
> > > slows down the whole system dramatically.
> > > 
> > > regards
> > > 
> > > > -----Ursprungliche Nachricht-----
> > > > Von: Mukul Gandhi [mailto:mukulw3@yahoo.com]
> > > > Gesendet: Mittwoch, 4. Juli 2001 18:19
> > > > An: tomcat-user@jakarta.apache.org
> > > > Betreff: Performance problem with Tomcat 3.2
> on NT
> > > > 
> > > > 
> > > > Hi folks !
> > > >   I am facing performance problem on Tomcat
> 3.2
> > > when
> > > > used on NT workstation. I am running servlets
> &
> > > JSPs
> > > > on Tomcat. My JSPs & Servlets pick huge amount
> of
> > > XML
> > > > data from Oracle tables(in CLOB field) and
> show on
> > > the
> > > > browser(IE 5). The application works fine 1 or
> 2
> > > > times. But when run repeatedly, I get error &
> > > Tomcat
> > > > stops processing the requests. Tomcat runs
> fine
> > > when
> > > > it processes less data intensive requests, but
> it
> > > > gives problem when it has to fetch & store
> large
> > > > amount of data in the database. Can anybody
> > > suggest a
> > > > way to make my environment more stable for
> this
> > > > scenario ?
> > > > 
> > > > Any help will be much appreciated.
> > > > 
> > > > Regards
> > > > mukul


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