Rob when you have the time please upload betas 7 through 13, just in case there’s one version where I can identify a big drop in performance, if not I’ll give up on this issue
I've uploaded the additional betas plus some more, for anyone to test with.
But be aware these are old versions with bugs and incompatibilities compared to current systems! Do NOT use on production systems! Make sure you have a complete backup of your flash drive and restore it for each test, as they may make incompatible changes to it. Even test systems with XFS or BTRFS drives should not be started with early v6 betas or any v5 release! These releases are for testing only! Do not allow any writes to the data drives. Disable any plugins and dockers that might write to the array.
I would suggest a password protected archive as a container for the known dangerous versions, (beta7 and 8?) with the password only given by direct communication. I would hate for someone to start playing around with one of the silent data corruption betas without full knowledge of what they are risking.
I would suggest not posting any links to beta 7 or 8...period. That's just asking for trouble.
Jon, have you guys been able to reproduce in your labs?