Re: [aspectj-users] AspectJ 1.6.7 - faster than ever.

[Simone Gianni <simoneg@xxxxxxxxxx>]

Great work Andy!!!!!!!!

Simone

Andy Clement wrote:
> I've been a bit quiet on the list lately, I've had my head down in
> AspectJ adding some timing infrastructure.  I've just put up a first
> blog article about what you can find in the latest AspectJ.  Basically
> the latest dev builds will produce profiling information for your
> pointcuts allowing you to see which pointcuts are hurting your compile
> times.  Information like this:
>
> Pointcut matching cost (total=6532ms for 675000 joinpoint match calls):
> Time:482ms (jps:#168585) matching against
>     (staticinitialization(*y*.()) && persingleton(SimpleAspect))
> Time:3970ms (jps:#168585) matching against
>     (execution(* *t*.*(*)) && persingleton(SimpleAspect))
> Time:538ms (jps:#168584) matching against
>     (execution(* *f*(..)) && persingleton(SimpleAspect))
> Time:1536ms (jps:#168584) matching against
>     (execution(* java.lang.CharSequence+.*e*(..)) && persingleton(SimpleAspect))
> Time:4ms (jps:#662) matching against
>     (within(*p*) && persingleton(SimpleAspect))
>
> Post is here:
> http://andrewclement.blogspot.com/2009/11/aspectj-profiling-pointcut-matching.html
>
> Please have a read and try it out.  Based on the results of it I've
> changed a few key algorithms internal to AspectJ.  What difference
> does it make? Well just to wet your appetite:
>
> Aspect:
> aspect SimpleAspect {
>   before(): execution(* CharSequence+.*e*(..)) {}
> }
>
> AspectJ1.6.6:
> ajc -timers SimpleAspect.aj -inpath rt.jar -outjar woven.jar
> Compiler took 19260ms
>
> AspectJ1.6.7 dev builds:
> ajc -timers SimpleAspect.aj -inpath rt.jar -outjar woven.jar
> Compiler took 12531ms
>
> I'll put out a second article about matching improvements shortly.  It
> will cover what is faster (and why it is faster) and how you can make
> sure you benefit from the speed up.
>
> cheers,
> Andy
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>   


--
Simone Gianni            CEO Semeru s.r.l.           Apache Committer
http://www.simonegianni.it/