Ruby Garbage Collection Tuning

How can i know the best gc settings for my ruby app.

Ruby garbage collection tuning.

May 24 2013 4 min read. Tuning ruby garbage collection for rspec. The ruby garbage collector has been flagged as the crux of ruby performance and memory use for a long time. Ruby like most other modern high level programming languages doesn t force you to manage memory this feature is called garbage collection or gc and you get it for free in ruby.

Our configurations reduce gc activity during startup time. See what i did there its settings out of the box are fairly non optimal for modern machines with gobs of memory. Lourens wrote this on feb 20 th 2015 9 19 am. However it s still not trivial to get the most out of it.

Automatic ruby garbage collection tuning starting at 0 mo. It has improved a lot over the last years but there s still a lot to tune. You can write tons of ruby code and never give a second thought to the fact that under the covers ruby is doing a bang up job of allocating and freeing memory for your code to use. Tunemygc optimal mri ruby 2 1 garbage collection.

Ree which is a fork of ruby 1 8 7 introduced its own parameters first and later ruby starting in 1 9 2 introduced its own similar parameters. 1 java garbage collection logs how to analyze them 2 a quick start on java garbage collection. Ruby s garbage collection is pretty rubbish. Less worst case memory usage through sensible upper limits and growth factors specific to your app.

Ruby 1 9 3 made them customizable via environment variables and ruby 2 1 0 added a lot more. Automatic and repeatable gc tuning. Mri maintainers have put a tremendous amount of work into improving the garbage collector in ruby 2 0 through 2 2. Tunemygc optimal mri ruby 2 1 garbage collection tuning.

The engine has thus gained a lot more horsepower.