Re: [aspectj-users] AspectJ Performance

["Abel Perez" <ablperez@xxxxxxxxxxx>]

Hi, Jim Hugunin, Mathew Webster...

Thanks for taking the time to share your insight, your time and effort is
greatly appreciated.

-Abel

----- Original Message ----- 
From: "Jim Hugunin" <lists@xxxxxxxxxxx>
To: <aspectj-users@xxxxxxxxxxx>
Sent: Tuesday, December 09, 2003 9:04 AM
Subject: RE: [aspectj-users] AspectJ Performance


> Erik Hilsdale and I recently wrote a paper on "Advice Weaving in AspectJ".
> This paper contains a section that explores runtime performance overhead.
> The primary conclusion of that work is that the overhead from using
AspectJ
> is very small.  If you want more details, see the paper at
> http://hugunin.net/papers.html.
>
> I think the most interesting paragraph in the performance section is this
> one (which I think echoes Robert Wenner's Knuth quote nicely):
>
> "We also found that we could easily modify the AspectJ code to experiment
> with different logging designs.  This led to a design which incorporates
an
> additional static boolean field.  Implementing this change in AspectJ
> required changing 2 lines of code vs. 7700 that would be required to
change
> in the hand-coded implementation.  This slightly altered logging policy
has
> 76% less overhead than the hand-coded implementation.  This ability to
> quickly experiment with different designs means that systems built with
> AspectJ can often have better performance in practice than their less
> flexible hand-coded counterparts."
>
> -Jim
>
> -----Original Message-----
> From: aspectj-users-admin@xxxxxxxxxxx
> [mailto:aspectj-users-admin@xxxxxxxxxxx] On Behalf Of Robert Wenner
> Sent: Tuesday, December 09, 2003 1:02 AM
> To: aspectj-users@xxxxxxxxxxx
> Subject: Re: [aspectj-users] AspectJ Performance
>
> On Tuesday 09 December 2003 03:29, Abel Perez wrote:
> > I'm fairly new to the AOP world and was wondering if there is a
> > performance loss when using AspectJ as opposed to regular Java?  If so
> > any information will be appreciated, thanks.
>
> "Premature optimization is the root of all evil." -- Donald Knuth
> SCNR,
>
> Robert
>
>
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