[chef] Chef Server 11 scaling vs Chef Server 10. Yeah!

[Jesse Campbell < >]

so we finally found a quiet night to migrate our production environment from chef server 10 to chef server 11.

we were previously running 10.16.2 on a dual core 8gb virtual machine, serving about 450 VMs that each checked in every 15 minutes (with start times randomized across the 15 minutes).

Over a 4 hour window, the VM would be severely stressed and we would normally see between 2000 and 3000 timeouts and/or connection resets trying to connect to the chef server, and chef runs that normally took around 25 seconds would take 5 minutes.

Over the same 4 hour window last night, there were zero timeouts, zero connection resets, and the new chef 11 VM (same specs) was barely breaking a sweat.

Oh yeah, and the average run time over all 450 vms went from 230 seconds to 17 seconds.

I would call that a serious win and vote of confidence in the erlang/postgresql rewrite.
Thanks guys for some amazing work!

-Jesse