line-profiler for ruby
C Ruby
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Failed to load latest commit information.
ext
test
.gitignore
Gemfile
Gemfile.lock
LICENSE
README.md
Rakefile
rblineprof.gemspec
test.rb

README.md

rblineprof

Installation

gem install rblineprof

Or in your Gemfile:

gem 'rblineprof'

Usage

require 'rblineprof'

profile = lineprof(/./) do
  sleep 0.001

  100.times do
    sleep 0.001

    1*2*3
    4*5*6
    7*8*9*10*11*12*13*14*15
    2**32
    2**128
  end
end

file = profile.keys.first

File.readlines(file).each_with_index do |line, num|
  wall, cpu, calls, allocations = profile[file][num + 1]

  if wall > 0 || cpu > 0 || calls > 0
    printf(
      "% 5.1fms + % 6.1fms (% 4d) | %s",
      cpu / 1000.0,
      (wall - cpu) / 1000.0,
      calls,
      line
    )
  else
    printf "                          | %s", line
  end
end

Will give you:

                          | require 'rblineprof'
                          | 
                          | profile = lineprof(/./) do
  0.1ms +    1.4ms (   1) |   sleep 0.001
                          | 
  2.7ms +  132.2ms (   1) |   100.times do
  1.3ms +  131.7ms ( 100) |     sleep 0.001
                          | 
                          |     1*2*3
                          |     4*5*6
                          |     7*8*9*10*11*12*13*14*15
  0.1ms +    0.1ms ( 100) |     2**32
  0.6ms +    0.1ms ( 100) |     2**128
                          |   end
                          | end
                          | 
                          | file = profile.keys.first
                          | 
                          | File.readlines(file).each_with_index do |line, num|
                          |   wall, cpu, calls, allocations = profile[file][num + 1]
                          | 
                          |   if wall > 0 || cpu > 0 || calls > 0
                          |     printf(
                          |       "% 5.1fms + % 6.1fms (% 4d) | %s",
                          |       cpu / 1000.0,
                          |       (wall - cpu) / 1000.0,
                          |       calls,
                          |       line
                          |     )
                          |   else
                          |     printf "                          | %s", line
                          |   end
                          | end

Rails integration

Other profilers

License

rblineprof is released under the MIT License.