Rails App Excessive Disk Read/Write

Question

a rails app that's been running in production for almost a year began excessive disk read/writes after a push we did today.

Here's a read total graph.

As well as a read ops graph

We pushed at around 22:30 and disk usage went bananas.

If I'm doing the calculations right, we're writing 476m of data every few minutes?

500000000 / 1024 / 1024 = 476.83

Either way, I'm unsure where to begin looking. Some help would be appreciated.

Answer 1

Ok, I figured it out. The box went into swap. AWS auto-scaled the boxes out and replaced with new ones. <3 amazon. :)