A few times a day I get a hash rate of like 6.xx for an S9.
It is running fine according to the local interface around 13.8.
But for 10-20 minutes a few times each days it drops down.
This happens to multiple S9's at the same time.
but not all by the same drop off, some are 10, some are 6, I have seen one go down to 4.
And each time when I check the local web page the miner is at 13++
I want to check if it is my network, ISP or something with Slush.
I've seen others report the same thing about Slush. Without having the pool ops here, I'm not sure how you can know what it is, short of having a bandwidth monitoring tool with logging, or perhaps having some miners pointed to another pool to see if it happens at both pools at the same time.
M