AstonJ
Rails console using 100% CPU in dev (fix)
If you are experiencing Rails console using 100% CPU on your dev machine, then updating your development and test gems might fix the issue - at least that’s what worked for me. Here’s my old and new (old versions are commented out):
# group :development do
# # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
# gem 'web-console', '>= 3.3.0'
# gem 'listen', '>= 3.0.5', '< 3.2'
# # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
# gem 'spring'
# gem 'spring-watcher-listen', '~> 2.0.0'
# end
group :development do
# Access an interactive console on exception pages or by calling 'console' anywhere in the code.
gem 'web-console', '>= 4.1.0'
# Display performance information such as SQL time and flame graphs for each request in your browser.
# Can be configured to work on production as well see: https://github.com/MiniProfiler/rack-mini-profiler/blob/master/README.md
gem 'rack-mini-profiler', '~> 2.0'
gem 'listen', '~> 3.3'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
end
# group :test do
# # Adds support for Capybara system testing and selenium driver
# gem 'capybara', '>= 2.15'
# gem 'selenium-webdriver'
# # Easy installation and use of web drivers to run system tests with browsers
# gem 'webdrivers'
# end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 3.26'
gem 'selenium-webdriver'
# Easy installation and use of web drivers to run system tests with browsers
gem 'webdrivers'
end
Hope this saves someone a few hours of faffing around trying to troubleshoot the issue! 
Most Liked
ohm
It was probably listen. listen 3.3.0 fixed a lot of threading and process problems.
1
ohm
I’ve had some trouble with spring just sitting there as well. spring is used to preload the app, so you can tear down and start up a server or console snappy.
1
Popular Backend topics
Currently a hot topic in the BEAM world, let’s start a thread for it (as suggested by @crowdhailer here) :smiley:
What are your current...
New
New
New
New
New
New
The Complete AWS Lambda Handbook for Beginners (Part 1).
In the first part of our Complete AWS Lambda Handbook for Beginners, we explain...
New
What's so exciting about Postgres? with Craig Kerstiens (The Changelog #417).
PostgreSQL aficionado Craig Kerstiens joins Jerod to talk ...
New
I’ve recently become interested in Elixir and all it’s neat perks. And since I’m currently working on a messaging platform; elixir seems ...
New
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
New
Other popular topics
What chair do you have while working… and why?
Is there a ‘best’ type of chair or working position for developers?
New
I know that these benchmarks might not be the exact picture of real-world scenario, but still I expect a Rust web framework performing a ...
New
I ended up cancelling my Moonlander order as I think it’s just going to be a bit too bulky for me.
I think the Planck and the Preonic (o...
New
This looks like a stunning keycap set :orange_heart:
A LEGENDARY KEYBOARD LIVES ON
When you bought an Apple Macintosh computer in the e...
New
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
New
If you want a quick and easy way to block any website on your Mac using Little Snitch simply…
File > New Rule:
And select Deny, O...
New
Author Spotlight:
Bruce Tate
@redrapids
Programming languages always emerge out of need, and if that’s not always true, they’re defin...
New
Get the comprehensive, insider information you need for Rails 8 with the new edition of this award-winning classic.
Sam Ruby @rubys
...
New
This is a very quick guide, you just need to:
Download LM Studio: https://lmstudio.ai/
Click on search
Type DeepSeek, then select the o...
New
Hair Salon Games for Girls Fun
Girls Hair Saloon game is mainly developed for kids. This game allows users to select virtual avatars to ...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /python
- /js
- /rails
- /security
- /go
- /swift
- /vim
- /clojure
- /java
- /emacs
- /haskell
- /svelte
- /onivim
- /typescript
- /kotlin
- /c-plus-plus
- /crystal
- /tailwind
- /react
- /gleam
- /ocaml
- /flutter
- /elm
- /vscode
- /ash
- /html
- /opensuse
- /zig
- /centos
- /deepseek
- /php
- /scala
- /react-native
- /lisp
- /sublime-text
- /textmate
- /nixos
- /debian
- /agda
- /django
- /deno
- /kubuntu
- /arch-linux
- /nodejs
- /ubuntu
- /revery
- /manjaro
- /spring
- /lua
- /diversity
- /julia
- /markdown
- /v









