Ruby Memory Leak

I hope that next time you are stuck debugging a complex native memory leak you have an easier time.

Ruby memory leak.

If you are hunting a simple memory leak in ruby i recommend my earlier article from 2015 most of it still holds. Debugging memory leaks in ruby jonathan wallace december 15 2011 programming 3 380. December 15 2011. Audit a project s gemfile lock.

Prints memory leak information. The new tooling in ruby 2 1 and up makes debugging these leaks a breeze. If you believe your application has a memory leak you can test this out. Make sure memory leaks are not in your gem dependencies.

This pass the result to a form. Is there an obvious. If you have any interesting battle stories or tools i have forgotten to mention you would like to share please post a comment. A ruby application on rails or not can leak memory either in the ruby code or at the c code level.

Do you have any questions feedback or an interesting memory leak debugging story. In this section you will learn how to find and fix such leaks by using tool such as valgrind. Leave a comment below thanks for. How to debug profile ruby.

Checks for memory leaks of gems in gemfile lock. Thin web server is actually a big memory consumer it is not thin anymore. Debugging memory leaks in ruby. Comparing to webrick it eats 100 more resources.

Here the memory usage happens. There are few tools available however none of them works with native mri ruby 1 9 3p194. Now you know what a memory leak looks like hopefully that will help you find one faster if you ever have this issue. This is a parser that gem some html pages and scrape them but it eat a lot of memory not being garbage collected.

Valgrind is an application for detecting c based memory leaks and race conditions. A memory leak is defined as memory increasing indefinitely over time. The best tool to find leaky gems in your dependencies. Prior to ruby 2 1 the best we could do was crawl our object space grab a snapshot wait a bit grab a second snapshot and compare.

To simply print the current ruby script memory usage in the system you can use this function. Reviewing the free memory analysis tools for mri and jruby and mentioning rubinius jonathan wallace. Most applications that have memory problems are defined as having a memory leak however if you let those applications run for a long enough period of time the memory use will level out.