I seem to be having some significant efficiency reduction after upgrading my remaining S1's to S3+.
You need to clarify (even qualify!) that statement. You SHOULD get a significant improvement either way since an S1 consumes 400 watts for ~200GH/s while an S3+ consumes as much for ~500GH/s. So the question is, what exactly do you mean by a reduction in efficiency?
Is there any known issues with the latest firmware that could cause my efficiency to drop 20% since upgrading? (I host my own P2Pool node that is how I see the efficiency drop).
It has been said in this thread and a multitude others,
if it ain't broke, don't fix it!Okay so what is going on is my pool that I host here is saying my efficiency is ~80% where it was ~115% before the upgrade. Seems more than suspicious to me...I do see the improvement in hash rate, but with my efficiency tanking I am seeing my deposits drop .02 satoshis or so instead of increasing. Killing me, smalls!
That means you are either getting a lot more stales than before, or you have set your timeout
LOW such that the "dark" HW errors are not showing up in your GUI and your "upgraded"(?) rigs are thus submiting less shares. You could try
increasing the timeout on one unit and see how that affects your earnings, else I'd press the hard reset and revert to the stock firmware. Having said that, (and this is by no means authoritative), did you ever hear of those fabled old tales about the S3 not being optimised for P2Pool, or am I mistaken?
I'll have to ask again, why on earth did you choose to "upgrade" the firmware?
EDIT: I had to say timeout set LOW rather than HIGH
Look for something more efficient (and quiet) to replace it.