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

rubyonrails-talk
1

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

2

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

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

3

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

4

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