Quote from: Eatbatterys on December 28, 2017, 09:58:47 PM

Quote from: raffff on December 28, 2017, 09:46:17 PM

something is definitely happening. All the major pools today are hit by large influx of hash for 30 minutes which then disappears.
The difficulty rises during the 30 minutes, but when the hash disappears difficulty does not go down fast enough.

So smaller miners who stay on the pools are hurt bad, my mining return is very bad today.
Difficulty going up and down from 32000 to 42000 to 31000 within 30 minutes is not normal

If this continues BWK is no longer viable to mine. The algo seems not to adjust to hashrate peaks well.

Just look bsod.pw, umine.org and unimining.net. They cover around 80% of total hashrate but all 3 no blocks found last 20 minutes, just after a big hashrate peak.
Difficulty is now down from 42000 to 27000, soon we see the hashrate spike again. (nethash down from 1.8 Th/s to 970 Gh/s)

That's just how difficulty retargeting works. Short of being able to adjust difficulty mid-block, massive hash spikes are going to slow things down briefly considering a significantly lower amount of hash is attempting to solve for a block with a significantly higher difficulty. Once that block is hit, difficulty retargets to normalize block times until the next massive hash spike comes in and drives difficulty up again.

Another way to help this would be to spread the hash rates around more evenly so they're not localized in one or two pools. This, unfortunately, is something entirely beyond our control. People are going to go flock to the pools with the highest hash rates no matter what evidence you give them that it's healthier for mining as a whole either way.

Well profit switching pools like Nicehash and Zpool (and large private mining farms) exploit this mechanism. They wait until difficulty is down, redirect there massive hashpower to the coin and quickly mine a few. Then when difficulty rises they move over to a different coin. Other normal 1:1 pools are hurt by this because their mining result changes up and down since they ride out the high difficulty phase of the same coins (the auto switching miners are long gone by then).

I tested both on bsod.pw and zpool mining the same neoscrypt coin. The amount I make a day on Zpool is much larger. All profit calculators are wrong because difficulty changes up and down by more then 50%.