Ruby Memory Leak

How to debug profile ruby.

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. Now you know what a memory leak looks like hopefully that will help you find one faster if you ever have this issue. I hope that next time you are stuck debugging a complex native memory leak you have an easier time. If you have any interesting battle stories or tools i have forgotten to mention you would like to share please post a comment.

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. The new tooling in ruby 2 1 and up makes debugging these leaks a breeze. A memory leak is defined as memory increasing indefinitely over time. Leave a comment below thanks for.

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. December 15 2011. There are few tools available however none of them works with native mri ruby 1 9 3p194.

Checks for memory leaks of gems in gemfile lock. Valgrind is an application for detecting c based memory leaks and race conditions. Is there an obvious. Debugging memory leaks in ruby.

Here the memory usage happens. Audit a project s gemfile lock. 5 debugging memory leaks. If you believe your application has a memory leak you can test this out.

Do you have any questions feedback or an interesting memory leak debugging story. Unlike unmanaged memory leaks tackling managed leaks is very straight forward. This pass the result to a form. This is a parser that gem some html pages and scrape them but it eat a lot of memory not being garbage collected.

Thin web server is actually a big memory consumer it is not thin anymore. The best tool to find leaky gems in your dependencies. Btw ruby 2 4 1 has a known memory leak so you may want to upgrade if you are using this specific version. Make sure memory leaks are not in your gem dependencies.

A ruby application on rails or not can leak memory either in the ruby code or at the c code level. Debugging memory leaks in ruby jonathan wallace december 15 2011 programming 3 380. In this section you will learn how to find and fix such leaks by using tool such as valgrind.