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| # | |
| # Created by Eric Lindvall <[email protected]> | |
| # | |
| # Please note: The numbers provided are of self and children, meaning, you | |
| # won't be able to add them all up to get the total memory usage of the app. | |
| # | |
| # It also does not take into account memory that was allocated and then freed. | |
| # | |
| # It is intended to give a simple overview of allocations to track down gross | |
| # offenders, not give an exact view of your memory usage. | |
| # | |
| if GC.respond_to?(:enable_stats) | |
| module RequireTracking | |
| def require(*args) | |
| start_allocated_size = GC.allocated_size | |
| super | |
| ensure | |
| $require_stats[args.first] += (GC.allocated_size - start_allocated_size) | |
| end | |
| def numeric_thousands_indicators(number) | |
| number.to_s.gsub(/(\d)(?=\d{3}+(?:\.|$))(\d{3}\..*)?/,'\1,\2') | |
| end | |
| end | |
| Object.send(:include, RequireTracking) | |
| Kernel.send(:include, RequireTracking) | |
| $require_stats = Hash.new { |h,k| h[k] = 0 } | |
| GC.enable_stats | |
| GC.clear_stats | |
| at_exit do | |
| puts "Memory used by file:" | |
| puts " %40s %s" % [ 'File', 'KB' ] | |
| puts " %40s %s" % [ '-------------', '--------' ] | |
| $require_stats.sort_by { |k,v| -v }.slice(0, $require_stats_top || 20).each do |(k,v)| | |
| puts "%40s: %s" % [ k, numeric_thousands_indicators(v / 1024) ] | |
| end | |
| end | |
| else | |
| puts "Warning: Not running with an interpreter with GC statistics" | |
| end |
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| > ruby -rrequire_tracking -e "require 'active_support'" | |
| Memory used by file: | |
| File KB | |
| ------------- -------- | |
| rubygems: 5,421 | |
| active_support: 4,296 | |
| active_support/core_ext: 2,361 | |
| active_support/json: 1,161 | |
| active_support/json/encoding: 1,063 | |
| rubygems/config_file: 921 | |
| yaml: 877 | |
| yaml/rubytypes: 669 | |
| date: 573 | |
| active_support/vendor: 524 | |
| rubygems/source_index: 490 | |
| rubygems/command_manager: 448 | |
| commands/abstract_command: 446 | |
| rubygems/local_remote_options: 428 | |
| builder: 407 | |
| uri: 406 | |
| rubygems/command: 399 | |
| builder/xmlmarkup: 393 | |
| json: 383 | |
| builder/xmlbase: 346 |
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