Re: [rvm-research] How can I use GCTrace tool ?
Nathan Ricci <[email protected]>
| Newsgroups | gmane.comp.java.jikes.rvm.devel |
|---|---|
| Message-ID | <CALh3YaPTRqopfxDTXFMgXgvkp_mZfd+_T7Nc718oqN8XsXaDPQ@mail.gmail.com> |
There are some outstanding bugs in HotSpots JVMTI implementation that
prevent Elephant Tracks from working on larger heaps. It works reliably
with J9 though.
I don't mind sharing the draft. Or, for that matter, the code for the
much improved version that is not yet on the website; so long as its
understood to be some what of a beta release.
--Nathan
On Thu, Apr 4, 2013 at 10:27 AM, Eliot Moss <[email protected]> wrote:
> On 4/4/2013 10:15 AM, lipengcheng wrote:
> > Hi Sam,
> >
> > Many thanks. Should the elephantTracks tool bind to HotSpot VM? What
> about its performance
> > compared with GCTrace tool in Jike?
> >
> > I visited the elephantTrack webpage. But I didn't find enough
> implementation documents. Could
> > you give me some implementations intro if you have? I might be modify
> the tool to get what I need.
> >
> > Thanks,
> > Pengcheng
>
> Performance compares favorably with the old Merlin algorithm,
> producing more information at similar cost. It's the most
> shaken down with the IBM J9 VM, but should work with any VM
> that supports JVMTI well enough.
>
> Not sure whether you really want *implementation* docs as much
> as "how do I use this thing". We had a paper accepted to ISMM
> that overviews the implementation. If my co-authors agree, we
> might send you the current draft (camera-ready version is under
> preparation).
>
> Regards -- Eliot Moss
>
>
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