According to Evan Weaver from Twitter it is possible for a typical production Rails app on Ruby 1.8 to recover 20% to 40% of user CPU by simply adjusting Ruby garbage collector settings. In August I set out on a quest to verify that statement on HeiaHeia servers. Results have really exceeded my expectations. Time to [...]
If you’re planning to run Rails applications on Nginx using Phusion Passenger, and do it on Ubuntu Linux, here’s what needs to be done. Even though there’s Ubuntu nginx package available (which works perfectly when you’re running PHP apps using FCGI), if you want to take into use Phusion Passenger, you’ll need to recompile Nginx [...]
Have you moved your site from Apache to Nginx and now your FastCGI (php-cgi/spawn-fcgi) processes die/hang/crash periodically and your users see “HTTP 502 Bad gateway” or “HTTP 504 Gateway timeout” instead of a website? I have faced this problem and found a relatively simple and robust solution. Here’s how I did it on Ubuntu 9.10 (Karmic [...]
