what happens if you SSH to the system and type
"nano /run/shm/.stat.log"
and report back what you see.
If you (or anyone who understands what these logs mean) have time, please take a look at these. I've found my bitfurys are not performing like others I read about here and would like to get them working better. I've performed no mods. I just plugged them in and this is what I got. These are first batch US kits btw.
Maybe I should do as you suggested to Trance but I'd like the feedback first.
Thank you.
If possible, shorten the lists to only the chips performing lower than 1.7GH, and it will be easier to spot the trend/problem. What batch is your hardware from? in the august/october stuff the hardware benefited from modding higher (not just speed but also getting low-performance chips to run correctly), but for the newer batch with higher voltage, issues will arise if you dont provide sufficient cooling (this means heatsinks AND airflow)
I would suggest: buy a $10-15 multimeter and check the voltage on each card. Take the red positive signal from the top contact on the large cube-like inductor and the ground from the pci-e or screw terminal GND. You want a voltage around 0.77-0.82 if you have 'okay' cooling and 0.82-0.88 if you have relatively large heatsinks on each backside of the PCB, and lots of cool airflow
In your case, the voltage on a lot of your cards seems low, almost like the august batch. check the voltage and if necessary, apply the pencil mod to increase it. If the voltage is high, then the issue is your cooling
I'll clean up those logs and remove everything thats over 1.7GH. Sorry about that. I didn't know what would be good information and what would be useless. Yes, these are August batch.