[Mono-list] [Mono-dev] Mono preview 2.0 binary and DTrace

[Zoltan Varga]

Hi,

  Looking at dtrace.h, all the current probes seem to be in
non-critical code-paths, so they
are unlikely to have a perf impact. We could make --enable-dtrace=true
the default in HEAD,
so it gets some testing.

                          Zoltan

On Sat, Aug 2, 2008 at 7:16 PM, Geoff Norton <gnorton at novell.com> wrote:
> On Sat, 2008-08-02 at 18:30 +0200, Andreas Färber wrote:
>
>> Not fully true, there is of course a minimal degradation (~5 nop
>> instructions on Solaris), but it should be hardly noticeable. I have
>> taken care to only call helper functions when the probe is active.
>>
>> Was the answer on IRC in any way official? I could think of three
>> possible reasons:
>>
>> a) Worries about performance degradation.
>
> Yes
>
>> b) No one updated the build system.
>
> True but minor
>
>> c) The build machine isn't DTrace-capable.
>
> d) We havn't tested it fully in our QA process, nor has it been
> available long enough for us to feel comfortable turning it on at this
> stage.  We also would need to invesgate how to do it in our universal
> binaries, etc.  Its a lot of testing and it unfortunately will not make
> 2.0 unless there is a compelling argument against this and support from
> the runtime team and from the QA team.
>
> -g
>
>
> _______________________________________________
> Mono-devel-list mailing list
> Mono-devel-list at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/mono-devel-list
>