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RE: [PATCH 00/16] branch tracing support


> -----Original Message-----
> From: Hui Zhu [mailto:teawater@gmail.com]
> Sent: Friday, May 11, 2012 2:24 AM
> To: Metzger, Markus T
> Cc: gdb-patches@sourceware.org; markus.t.metzger@gmail.com
> Subject: Re: [PATCH 00/16] branch tracing support
>
> Hi Markus,
>
> Thanks for your work.  I think this function is very interesting.
>
> But I didn't find the patch for the doc in your patches list.   I
> suggest you add it.

I expect some discussion on the commands and their exact spelling. I will add
documentation once the UI is clear, if that's OK.

I tried to summarize it in the cover letter. I hope it's sufficiently detailed 
for
discussion. If it helps, I can send a documentation patch, as well, but I'm 
afraid
I might end up redoing it completely.


> PS, do you have any data about  how much speed decrease when btrace
> enable.

The speed decrease depends very heavily on the application. We measured
between 8.7x and 66x overhead.

Regards,
Markus.

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