Debugging stuck Ruby processes | Mike Perham
2016-08-05 My Ruby process has stopped doing any work, what’s wrong? This is an uncommon but occasional problem for many people, especially with large applications using lots of native extensions. Step 1 - Thread backtraces A Sidekiq process will print out the backtrace of every thread when you send it the TTIN signal. kill -TTIN <pid> Side note: YMMV for other types of Ruby processes: resque, uni
A Modern Guide to Threads
I spoke recently at Rubyconf 2011 on some advanced topics in threading. What surprised me was how little experience people had with threads so I decided to write this post to give people a little more background on threads. Matz actually recommends not using threads (see below for why) and I think this is a big reason why Rubyists tend not to understand threading. Simple Threading Every time you e
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