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From "Lyle Coder" <x_co...@hotmail.com>
Subject Re: Xerces multithreaded performance
Date Sun, 18 Mar 2001 23:44:18 GMT
I'm sorry... I did mean Xerces -C.  Does your implementation work with Xalan
(C) well?

Thanks
Lyle
----- Original Message -----
From: "Andy Heninger" <andyh@jtcsv.com>
To: <general@xml.apache.org>
Sent: Friday, March 16, 2001 9:25 AM
Subject: Re: Xerces multithreaded performance


> You don't say whether you  are using xerces-c or xerces-j.
> But the Xerces-C DOM does have the scalability problems that
> you are seeing.
>
> I've prototyped an alternative DOM implementation that
> works better in multithreaded environments on SMP machines.
> More info on this is at http://www.apache.org/~andyh/
>
> Andy Heninger
> IBM XML Technology Group, Cupertino, CA
> heninger@us.ibm.com
>
>
> ----- Original Message -----
> From: "Lyle Coder" <x_coder@hotmail.com>
> To: <general@xml.apache.org>
> Sent: Thursday, March 15, 2001 12:03 AM
> Subject: Xerces multithreaded performance
>
>
> > Hi,
> > I am using the Xerces DOM API.  When I am creating DOMs simultaneously
> via
> > different threads, I have a serious performance bottle neck.  Many
> times, my
> > application just STALLS and I use GDB to break in and see where the
> stall is
> > and it is ALWAYS in Xerces where I am calling some Xerces allocation
> > function like
> > XercesElement->createElement()
> >
> > I mean... I get better performance with just one thread.  And if you are
> > wondering, my code does not hold any locks at all (no semaphores), so I
> know
> > it is not my program thats the bottle neck
> >
> > So the question is, has any one else seen this, and if so, do you have a
> > solution
> >
> > Thanks
> > Lyle
> >
>
>
>
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