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## ordered dict memory profiling.md

      
        
          
            
              
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                andresriancho
                / ordered dict memory profiling.md
            
            
              Last active
              August 29, 2015 14:21
            
              
                Ordered dicts are hard (?)
              
          
        
      
        
  
      
    TL;DR Use ruamel.ordereddict instead of Python's OrderedDict. Significant improvement in memory and CPU usage.
I was having memory issues with w3af so I started to experiment with different libraries for ordered dicts (since profiling was showing some strange things in that area). These are the results of some memory profiling tests I run:

Lower memory usage: 11.574 MiB ruamel.ordereddict
Higher memory usage: 69.742 MiB SQLMap's ordered dict; almost the same memory usage as the Python's collections.OrderedDict

When running the tests 100 times using timeit this is what I got on my workstation:

Faster: ruamel.ordereddict 7.66 seconds