[Vm-dev] DTrace for Squeak?
eliot.miranda at gmail.com
Tue May 19 15:54:28 UTC 2009
On Tue, May 19, 2009 at 3:54 AM, Adrian Lienhard <adi at netstyle.ch> wrote:
> Has anybody considered adding a DTrace user space provider to the VM?
> This could be very helpful for debugging and profiling (at least on Mac; I
> don't know about DTrace for Linux).
> My man pages on OS X describe the same approach for adding probes to a C
> program as in http://blogs.sun.com/ahl/entry/user_land_tracing_gets_better
> Ruby, Java, Perl, PHP and others have such high-level providers.
Yes, but things like MethodWrappers can provide excellent visibility and the
VM already has lots of introspective support for memory usage, garbage
colleciton timings, context switch counts, etc. I don't see DTrace as that
compelling. What do you see as the costs and benefits?
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