om/giraldeau/python-profile-ust
This is of course very experimental, requires a special setup, an I don't
even know if it's going to produce good results. I'll report the results in
the coming weeks.
Cheers,
Francis Giraldeau
___
Python-Dev
2015-02-06 6:04 GMT-05:00 Armin Rigo :
> Hi,
>
> On 6 February 2015 at 08:24, Maciej Fijalkowski wrote:
> > I don't think it's safe to assume f_code is properly filled by the
> > time you might read it, depending a bit where you find the frame
> > object. Are you sure it's not full of garbage?
I need to access frame members from within a signal handler for tracing
purpose. My first attempt to access co_filename was like this (omitting
error checking):
PyFrameObject *frame = PyEval_GetFrame();
PyObject *ob = PyUnicode_AsUTF8String(frame->f_code->co_filename)
char *str = PyBytes_AsString
Here is a working prototype for CPython to record all function call/return
using LTTng-UST, a fast tracer.
https://github.com/giraldeau/python-profile-ust
However, there are few issues and questions:
- I was not able to get PyTrace_EXCEPTION using "raise" or other error
conditions. How can we tr
2014-11-22 7:44 GMT-05:00 Julian Taylor :
> On 17.11.2014 23:09, Francis Giraldeau wrote:
> > Hi,
> > ...
> > The PEP-418 is about performance counters, but there is no mention o
> > Anyway, I think we must change CPython to support tools such as perf.
> > Any
Hi,
The PEP-418 is about performance counters, but there is no mention of
performance management unit (PMU) counters, such as cache misses and
instruction counts.
The Linux perf tool aims at recording these samples at the system level. I
ran linux perf on CPython for profiling. The resulting call
If I may, there are prior work on JavaScript that may be worth
investigating. Formal verification of dynamically typed software is a
challenging endeavour, but it is very valuable to avoid errors at runtime,
providing benefits from strongly type language without the rigidity.
http://cs.au.dk/~amoe
