Re: [Caml-list] What is triggering a lot of GC work?

[ygrek <ygrekheretix@gmail.com>]

On Mon, 25 Feb 2013 08:02:54 +0000
Mark Shinwell <mshinwell@janestreet.com> wrote:

> On 25 February 2013 02:08, Francois Berenger <berenger@riken.jp> wrote:
> > Is there a way to profile a program in order
> > to know which places in the source code
> > trigger a lot of garbage collection work?
> 
> Well, as of last week, there is!
> 
> I'm working on a compiler and runtime patch which allows the
> identification, without excessive overhead, of every location (source
> file name / line number) which causes a minor or major heap allocation
> together with the number of words allocated at that point.
> 
> There should be something available within the next couple of weeks.
> It only works on native code compiled for x86-64 machines at present.
> Currently it has only been tested on Linux---although I expect it to
> work on other Unix-like platforms with little or no modification.

Meanwhile you can use poor man's allocation profiler :
- http://ygrek.org.ua/p/code/pmpa
- https://sympa-roc.inria.fr/wws/arc/caml-list/2011-08/msg00050.html

-- 
 ygrek
 http://ygrek.org.ua