harmony-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Pavel Afremov" <pavel.n.afre...@gmail.com>
Subject Re: [drlvm][stacks] How large is stack size limit?
Date Mon, 11 Dec 2006 13:58:58 GMT
Elena,



You wrote:

   RI*: 3689



It's mean that test is failed on RI, isn't it?

So 7000 isn't correct for RI. Let's change it to 3000. And test start's pass
on our VM.



Pavel.


On 12/11/06, Elena Semukhina <elena.semukhina@gmail.com> wrote:
>
> Pavel,
>
> what is incorrect in the test?
>
> It passes on windows on IBM VME and JRockit. As for the magic number 7000,
> I
> think the author of the test considered it quite satisfactory . In the
> comments to the test he wrote that an alternative java craches with
> 200000:).
>
> The JVM Spec reads:
> * If the computation in a thread requires a larger Java virtual machine
> stack than is permitted, the Java virtual machine throws a
> StackOverflowError.
>
> So throwing StackOverflowError is legal and the stack size limit depends
> on
> implementation. The question is whether the test has to pass on the
> current
> DRLVM implementation. If it fails legally, then we should fix the test so
> that it reflects the status quo.
>
> Thanks,
> Elena
>
> On 12/11/06, Pavel Afremov <pavel.n.afremov@gmail.com> wrote:
> >
> > I think that test is invalid. It doesn't pass on windows RI , so … no
> > comments. Also it is not clear why depth should be 7000. I can find this
> > magic value in any spec.
> >
> > Pavel Afremov.
> >
> >
> >
> > On 12/11/06, Elena Semukhina <elena.semukhina@gmail.com> wrote:
> > >
> > > Hello all,
> > >
> > > The smoke test stress.Stack fails with StackOverflowError on Windows
> and
> > > linux/INT. It passes only on linux/JIT now.
> > > The test algorithm is simple: a method calls itself recursively for
> 7000
> > > times. The test fails if StackOverflowError is thrown.
> > >
> > > The following are the numbers of iterations before the test fails:
> > >
> > > Windows:
> > > INT: 353
> > > JET: 3963
> > > OPT: 32264
> > > RI*: 3689
> > >
> > > Linux:
> > > INT: 587
> > > JET: 7762
> > > OPT: 72105 (!!!)
> > > RI*: 61837
> > >
> > > *RI is Java(TM) 2 Runtime Environment, Standard Edition (build
> > > 1.5.0_08-b03
> > > ).
> > >
> > > Are these numbers expected? Are there any restrictions on stack size
> in
> > > DRLVM?
> > >
> > > --
> > > Thanks,
> > > Elena
> > >
> > >
> >
> >
>
>
> --
> Thanks,
> Elena
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message