Rails - Dec 2009 - is there a profiling gem/plugin for Ruby on Rails?

Hi,

is there a profiling gem/plugin for Ruby on Rails?

That is, where I can then specify the point in a request I want to act
as milestones points for a time to be taken, and place them
strategically. Then ideally the plugin then works out and displays how
the overall response time was made up...

Tks

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I haven''t tested this myself, but it looks promising:


http://timetobleed.com/memprof-a-ruby-level-memory-profiler/

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The standard rubyish profiler is ruby-prof
http://ruby-prof.rubyforge.org/

Not sure if it exactly matches your requirements, but it''s quite
powerful.

You can setup the start/stop points in your code, then run the request
and have it spit out the results into a file. You can set whether it''s
profiling wall-time or processer-cycles or even (I think) memory
usage.

You can even generate valgrind-style files that can be displayed in
programs like kcachegrind to easily visualise where the program''s
spending its time.

Cheers,
Taryn

On Dec 15, 11:34 am, greghauptmann
<greg.hauptm...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hi,
>
> is there a profiling gem/plugin for Ruby on Rails?
>
> That is, where I can then specify the point in a request I want to act
> as milestones points for a time to be taken, and place them
> strategically. Then ideally the plugin then works out and displays how
> the overall response time was made up...
>
> Tks
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So the type of thing I was after was the ability to say:

* define checkpoints in code for the profile, but with some indication
of hierachy for later reporting, e.g.
     - profile_point(:start, "main")
       - profile_point(:start, "validations")
         - profile_point(:start, "validation 1")
         - profile_point(:end, "validation 1")   # options ends
         - profile_point(:start, "validation 2")
         - profile_point(:end, "validation 2")   # options ends
       - profile_point(:start, "database stuff")
       - profile_point(:end, "database stuff")
     - profile_point(:end, "main")

* so then you can get timings for each, e.g.
  main=30sec [xx%]
    validations=20sec [xx%]
      validation1=5sec [xx%]
      validation2=15sec [xx%]
   database_stuff = 10 sec [xx%]

So this type of thing.

Probably not much work to do, but I was wondering if there was a
library that let you customize the timing points you wanted to
profile.  Another valid add would be getting averages for these values
over mulitiple calls.

Any existing gems/plugins/libraries that would do this?

Tks



On Dec 16, 1:32 am, taryneast
<taryne...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> The standard rubyish profiler is ruby-profhttp://ruby-prof.rubyforge.org/
>
> Not sure if it exactly matches your requirements, but it''s quite
> powerful.
>
> You can setup the start/stop points in your code, then run the request
> and have it spit out the results into a file. You can set whether
it''s
> profiling wall-time or processer-cycles or even (I think) memory
> usage.
>
> You can even generate valgrind-style files that can be displayed in
> programs like kcachegrind to easily visualise where the program''s
> spending its time.
>
> Cheers,
> Taryn
>
> On Dec 15, 11:34 am, greghauptmann
<greg.hauptm...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > Hi,
>
> > is there a profiling gem/plugin for Ruby on Rails?
>
> > That is, where I can then specify the point in a request I want to act
> > as milestones points for a time to be taken, and place them
> > strategically. Then ideally the plugin then works out and displays how
> > the overall response time was made up...
>
> > Tks
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