FIXED!   User error.  Thanks for the info on the kano support forum!!   

My S7 never seemed to have a problem.  This used S9 I bought connects to
stratum.antpool.com:443  and  stratum.f2pool.com:3333

...just fine but reports stratum.kano.is:3333 (and a few other variations listed on the site) and some others as "dead"

I know they aren't dead since my S7 was working fine with them. 
Is this a known issue with the S9?  All I did was unplug the S7 and plug-in the S9 and enter pool data.

I don't know how to contact kano (which right now is my preferred pool) to ask...

THANK YOU!!
patricia

Thanks for your time...   The power/energy units thing is just college physics-core curricula, and my having been a professional physicist working for the USAF for the last 36 years, I'm likely not misunderstanding anything.  Anyway, as this is heading for a troll-fest, which I wasn't after, I'll just drop a few F-bombs (*facts, haha) then be done with it.

I realized S7's are a better surrogate than S9's for the efficiency of the whole network - S7's have penetrated very far into big mining networks over the last few years as well as individual networks. That way we're only ignoring really inefficient miners like S3-level miners (also, the network total hashing rate varies a bit, but will likely increase for as long as it can).   https://i.imgur.com/vSVL1yA.png

I was looking at buying a miner with Btc - but I realized I have no guarantees at all about what I will get.  You know, with Amazon there's that return guarantee and all, but there's nothing with bitcoin.  If you order something, send the Btc, then don't receive the product, you can't ever get the Btc back - how do you know an online sale isn't actually a scam?

Thanks! 
noob

You can't say 1.4GWh (energy) for a miner - miners are rated in power (kW) - the "h" part depends on how long you run it.  
 
Energy (TWh) for all humans is computed annually so ~20,000 TWh (first table on that wiki page) - which is Watts of power generated times the length of time over which it was generated - so total Watts (in a year) * total hours (in a year) = Watt-hr   (I think it would be OK to call this Watt-hr/annum)

The first couple of times I did this I was WAY off because I sort of ignored that stuff...  
I guess it should be checked by rolling everything back to the fundamental units - all the way back to Joules (Watt = J/sec.) and carefully carry the time through the calculation...


DUMB QUESTION: If you order something online and pay with Btc (actually send it), and what you ordered never shows up, you've just been scammed, right?  How do you deal with this Btc flaw?  (in this way Btc is pretty much like cash - at least with a credit card you're sorta protected from scams - am I seeing this correctly?)

Well, I've been checking it - it's only an order-of-magnitude estimate - but I think this is right - can you spot me?

(in round numbers) The hash rate of the bitcoin network is around 14,000,000 terahashes per second.  

An S9 does about 14 terahashes per second and uses about 1,400 Watts of power.  (ignoring less efficient miners)

So that means the bitcoin network is using the hashing equivalent of about 1,000,000 of the S9 antminers. (assumes most-efficient case?)

So a million S9's use 1,400 million Watts of power, or 1.4 GigaWatts of power.  

The annual energy use for bitcoin is therefore (1.4 GigaWatts) * (8760 hours in a year) = 12,264 GigaWatt-hours or ~12 TeraWatt-hr of energy.

The total annual electric energy generated by humanity is about 24,000 TeraWatt-hours.  (wikipedia)

Thus bitcoin uses 0.05% of all electrical energy generated if only the most efficient miners are used.  
Allowing for inefficient miners, we'll say 0.1% - 1% of all electricity generated.  (to nearest order of magnitude)

I just calculated, based on the global hashrate, that bitcoin mining uses between 0.1% (if all miners are S9's) and 1% (if a mix of newer and older hashers are in use) of all the electric energy generated by mankind.  That much energy would run some respectably-sized factories (or cities).  Maybe China wants to keep power directed toward industry?

Also, Jørgen Randers mentioned in 2014 that Norway owns something like 10% of all the stocks in the world (he says, "filthy-rich Norwegians").  That's what they did with their share of the North Sea Oil earnings.  It sort of makes sense that a couple of Norwegians would acquire so much mining hardware...

Hi All - has anyone else noticed that the last couple of payouts for kano PPLNS do not seem to be confirming in Bitcoin Core v0.14.0 (64-bit)?  
This seems a little odd.

This is what I'm seeing for the last 2 payouts, in BC Core:
Status: 0/unconfirmed, in memory pool...  
Date: 12/31/17 18:34
From: unknown
...


Normally I would see something like this (from three payouts ago...):
Status: 1166 confirmations
Date: 12/30/17 08:02
From: unknown
...


EDIT:  This was answered on IRC.

I sort of compare slush's hits to Kano's and they've been tracking pretty well through this blockless time.  They also tracked the blocky weeks a little bit ago.  So I think the big miners are driving the statistics.  What are the chances two similar pools would perform similarly in time?

It looks like a nice pool.  Is this a "standard" ckminer pool?  It looks to this newbie like a small version of Kano - with slightly different parameters - is that a fair statement?  It's not p2p, correct?

Thanks for this thread - trying to set up my s7 but I don't see the options for load balancing that I saw on my s3's - so the s7 only can mine one pool at a time?  (this was called the "failover setting on the s3's)  Is there any way to split the hashing power between two pools?  I don't want to pool-hop if I can help it.

Thanks,
Patricia

What's the "payout period" - it looks like a week or so?  Is that set by p2pool?

I bought a single fan unit.  It seems to work very well.  It is much lighter and a bit smaller than my s3's.  I have it on its side so the heat sinks are pulled by gravity toward the chips.  It is a little like a rocket, so that must be one powerful fan.  Denser heat sink fins than older s7's.  Loud, but don't know how it compares to other s7's.  Stable at 700 MHz, and I think it's a little faster (GHs/s) than older s7's but I'm not sure.  I'm a little worried about a single point failure on that single fan.

Does anyone know if s7's can support mining two pools at once?

It can be hard to find that little reset button with a paperclip.  You have to make sure you found it - you'll hear a subtle, little "click" when you find it and press on it.  You sure you found it?

Can't log in with the web interface?  Reset to factory default, plug into router and try to log in to http://192.168.1.99?

It didn't even seem to get warm.  Wait a minute, I was only running one s3 on that 500 W (EVGA 100-W1-0500-KR) power supply.  God, I'm such an idiot!  Better edit that post  :-/

EDIT: The only reason I posted here is that I don't have power for those s3's and folks here sounded like they did.  I actually had one of those "used" 1 kW HP server power server supply which ran both.  The 500W just ran one s3+.  I have an extra 750 W EVGA 750 G2 - do you know if that'll run both?  Prolly not...  

Anyway, if this is the wrong thread, maybe sysop will move it to the right place?

Thanks, and apologies for the confusion.

Thanks for the details.  Works for me.  And it's a good thing you're doing for smaller miners, decreasing the variance so that folks' efforts don't "dust out" (think that's what you mean).

EDIT:  Had a thought.  In the first bullet of your "Why mine with us" section, you might add:  "(including dust)"

Thanks - that seems pretty fair.  But one of the reasons I came here was that I saw in some of the postings in this thread some talk about encouraging/supporting smaller miners, and it seemed to me that, since this seems to be is a smallish (read: user friendly) pool, and remembering the first few micro-BTc, bigger hashers here might want to automatically donate *part* of their minings to the smaller hashers (i.e., rather than all-or-none of it).  So I was wondering if that's possible?  

Thanks Again

EDIT:  Maybe that's a dumb idea.  Maybe not possible due to p2p software you're running...

I just pointed my s7 at NastyPool - I noticed a comment on the stats plots page: "(donating to nastyfans as NastyMining-PoP)" - what does this mean?  Also, what is the sharing disposition (across NastyPool) if a block is hit by a miner?

Thanks!  :-)

I've got a couple of S3+ units and a 500W power supply (been running them both for a month or so) that I'm selling, if anyone's interested.

EDIT:  Sorry!  Brain-dead here.  The 500W PS ran only one s3+.