[Soot-list] Why Spark in soot 2.2.4 slows down

[Eric Bodden]

Ondrej could you do the same run with hprof enabled? I think with such
a significant difference, this should easily show up in a profile.

Eric

On 22/06/07, Ondrej Lhotak <olhotak at uwaterloo.ca> wrote:
> Strange, I also notice a big slowdown.
>
> Also, Soot 2.2.4 gives significantly different answers than 2.2.3.
>
> If I use the pre-jimplify switch, which separates Spark time from
> Jimplification time, I get the following Spark times on soot-c:
> 2.2.3:  15.3s
> 2.2.4: 113.9s
>
> Something *very* weird is going on.
>
> I'm not aware of any recent changes to Spark. Has anyone been working on
> Spark?
>
> I would like to do a binary search through the Subversion revisions
> between releases 2.2.3 and 2.2.4 to determine the cause of this.
> Unfortunately, the internet is dead here at the moment, so I can't do
> that right now (and who knows when this e-mail will even go out). I'll
> be travelling all next week, so I can't investigate the problem until
> later. If someone manages to track it down, I'd be interested to hear
> what the cause is.
>
> On Thu, Jun 21, 2007 at 08:39:25AM -0400, Eric Bodden wrote:
> > Nope. No such observation here. 50s sounds pretty fast to me. Are you
> > sure it's doing the right thing? If so, maybe could you email us you
> > test case and command line?
> >
> > Eric
> >
> > On 21/06/07, Joe Qian <owqian at gmail.com> wrote:
> > >Hi everyone,
> > >
> > >       Recently I moved from soot 2.2.3 to soot 2.2.4. But when testing old
> > >programs (also with JDK1.4.1), i found the Spark points-to analysis run
> > >much slower than before.  For my small test case, the old version of spark
> > >run about 50s, while the new spark version have to run about 200s.
> > >I have no idea about this situation. Does any one else have similar
> > >experience?
> > >
> > >       Thanks
> > >
> > >Joe
> > >_______________________________________________
> > >Soot-list mailing list
> > >Soot-list at sable.mcgill.ca
> > >http://mailman.cs.mcgill.ca/mailman/listinfo/soot-list
> > >
> > >
> >
> >
> > --
> > Eric Bodden
> > Sable Research Group
> > McGill University, Montréal, Canada
> > _______________________________________________
> > Soot-list mailing list
> > Soot-list at sable.mcgill.ca
> > http://mailman.cs.mcgill.ca/mailman/listinfo/soot-list
> >
>


-- 
Eric Bodden
Sable Research Group
McGill University, Montréal, Canada