Increased size of /dev/shm on the Common Runtime

Change effective on 31 January 2017

The size of /dev/shm has been increased from 5MB to:

  • 64MB (Standard-1X)
  • 128MB (Standard-2X)
  • 256MB (Performance-M)
  • 512MB (Performance-L)

This is intended to help Heroku CI users to run tests against WebKit-based headless browsers, such as PhantomJS. ( Heroku CI is in limited public beta, you can apply for access here )