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From "Rana Dasgupta" <rdasg...@gmail.com>
Subject Re: [drlvm]Leave classunloading on by default?
Date Thu, 22 Nov 2007 02:12:20 GMT
Thanks :-)

On Nov 21, 2007 6:28 PM, Robin Garner <robin.garner@anu.edu.au> wrote:

> I'm glad it's of use.  It shouldn't be too hard to make a standalone
> test from it, I'll do that next week sometime.
>
> cheers
>
> Rana Dasgupta wrote:
> > Robin,
> >    I built dacapo from svn head and ran the derby benchmark. I see a few
> > failures in DRLVM in class unloading( when using mark&compact ),
> shutdown
> > etc. when running with different heap sizes. The RI successfully runs
> > everything. As I said before, a real use case always helps. Are you
> planning
> > to contribute this as a standalone test? That would help a lot.  I don't
> > want to open up JIRA's that need the entire dacapo svn.
> >
> > Thanks,
> > Rana
> >
> > On Nov 15, 2007 12:43 AM, Robin Garner <robin.garner@anu.edu.au> wrote:
> >
> >> Rana Dasgupta wrote:
> >>>   BTW, I have been unable to find a scenario that stresses the gc
> >>> heap, and needs to unload unused classes, and it would be good find
> >>> such  test cases.
> >> The DaCapo benchmarks project is currently evaluating new benchmarks,
> >> and in svn right now there is a derby benchmark based on JDBCBench (ie
> >> almost a direct copy of the hsqldb benchmark).
> >>
> >> Because derby compiles SQL queries into Java classes, after a couple of
> >> iterations of the benchmark, it requires class unloading.  The
> benchmark
> >> appears to run in a ~25M heap, and allocates much more than that.
> >>
> >> It's almost certain that we won't release this as the final derby
> >> benchmark, but I might package it separately as a class-unloading unit
> >> test.  But in the meantime, if you want to build dacapo from svn head,
> >> it might be exactly what you're after.
> >>
> >> cheers
> >>
> >> --
> >> Robin Garner
> >> Dept. of Computer Science
> >> Australian National University
> >> http://cs.anu.edu.au/people/Robin.Garner/
> >>
> >
>
>
> --
>  Robin Garner
> Dept. of Computer Science
> Australian National University
> http://cs.anu.edu.au/people/Robin.Garner/
>

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