I was recently converting some code from Ruby 1.8.7 to Ruby 1.9.2 and I wanted to check memory usage. I also wanted to check for memory leaks, which can be a problem in garbage collected languages.
The following code can be used to check memory usage after each request. It is designed to be used in conjunction with other rack middleware:
Once you've got this up and running, you can use ab
to stress test the website. If memory usage keeps on increasing over time for the same load level, you probably have a memory leak.
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