![Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT](https://miro.medium.com/max/1838/0*EmmhijVk2W4Y2VaM.png)
Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT
worker_timeout <= Cluster::WORKER_CHECK_INTERVAL causes Terminations · Issue #1714 · puma/puma · GitHub
![Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT](https://miro.medium.com/max/1400/1*kB7rCM0XpoKHG2AIaddy0A.png)
Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT
![Switching from Unicorn to Puma. Cloud hosting providers, like Amazon… | by Guy Callaghan | FiNC Tech Blog | Medium Switching from Unicorn to Puma. Cloud hosting providers, like Amazon… | by Guy Callaghan | FiNC Tech Blog | Medium](https://miro.medium.com/max/1372/1*qbL04gFavMINRtwTWMIu9Q.png)
Switching from Unicorn to Puma. Cloud hosting providers, like Amazon… | by Guy Callaghan | FiNC Tech Blog | Medium
![Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT](https://miro.medium.com/max/1400/1*-k5nqnm1RR0KelAZ5xHXfQ.png)
Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT
![Question: How to debug what cause [20795] ! Terminating timed out worker: 21499, also 100% CPU (log file didn't output anything useful) · Issue #1627 · puma/puma · GitHub Question: How to debug what cause [20795] ! Terminating timed out worker: 21499, also 100% CPU (log file didn't output anything useful) · Issue #1627 · puma/puma · GitHub](https://user-images.githubusercontent.com/1804755/43571327-493e9f0c-966f-11e8-8961-6c38607f4487.png)