Quite a few ZEN pools are down or really slow with timeouts, and others are too tiny/new to inspire much confidence:
miningspeed.com - down
minez.zone - down, their 55 ZEN gift doesn't really compensate if it goes down too often (ddos or not); not sure how effective their ddos countermeasures are, the last downtime was substantial (7+ hours judging from the reports here)
suprnova.cc - I had timeouts on it all day, my miners kept being disconnected for long periods, web interface utterly slow or timeouts
zencash.cloud - up, but hardly anyone is on it ...
luckpool.org - up, but hashrate at only 57 kSol/s, 13 miners, and the top miner has 53 kSol/s, so if/when that one leaves ...
cryptobroker - up, hashrate at 300 kSol/s, but only 7 miners, and top miner has 290 kSol/s, so if/when that leaves ...
zenmine.pro - up, hashrate at 185 kSol/s, 130 miners ... the most "healthy" so far (also 0% fee)
miningpool.io - up, but hashrate at only 24 kSol/s, 13 miners ...
mixpools.org - no idea, haven't tried it, there are 0 miners on it ...
zenpool.eu - up, but only 1 miner with 280 Sol/s
NOTE ON SUPRNOVA: Last time I could access the Suprnova web interface, it was showing about 80% of the entire network hashrate ... that's not a healthy network. If any of the big miners are reading this, please consider at least spreading your hashrate to other pools! I totally understand that the alternatives haven't proven very reliable until now, but still ...
EDIT: using the alternative address sup.rnova.cc, it shows the hashrate is only about 1.1M out of 5.5M, so only 20% ... this is odd and doesn't quite add up. I've looked at most pools and the sum of all other pools is less than 1M, so either there are a shitload of solo miners out there, or suprnova is reporting wrong numbers
Hey, you missed my pool! There's actually a lot of small pools out there. But the network hash rate rose so fast many switched to other coins or joined larger pools. I'm aiming all the miners I have at my own pool and hope to find a few blocks per day. Maybe if other people join it will even the rate out.
https://zpool.blockoperations.com/I just went through the known pools listed and tallied up the hash rates. Why do these only add up to 21% of the network hash rate? Are there other hidden pools or solo mining making up the other 79%?? Or is there a problem with the stated network hash rate?
Total speculation(conspiracy theory): could the recent denial of service attacks be perpetrated by those mining the 79% as they try to grab as much ZEN as they can?
I also just watched the hash rate on suprnova rise 100k but the network rate did not change.