I laughed pretty hard on that one  Rather than fire up an old HP server, you can easily plug those sticks into an rPi, or even whatever laptop you're currently using. I've got 5 of them in a powered USB hub, and that hub is plugged into my rPi. The rPi has cgminer 4.9.1 compiled from source running. I point them to -ck's solo pool because you never know  . The cost to run it is virtually negligible... the U2s draw about 12.5W total and the rPi about 2.5W. 15W total consumption costs me about $0.04 a day. With your insanely high electricity costs, that same setup would cost you about €0.10 a day. Since you're only talking about 2 U2s, that would be a total power draw of 7.5W and about €0.05 a day. Pretty sure you could slip that one by the wife without notice  . Of course, solo mining with only 2 U2s, you've got about a 1 in 617589 chance a day of finding a block at current difficulty levels... but at the cost of playing, it's worth it. It's actually a very good idear... I am, however, one of the few reasonably tech savvy guys on the planet that doesn't own a raspberry... I do have an old neoware CA22 laying around. I might try to install a linux distro on it, and run it as a server. It also has 2 usb-ports, so i might just plug the U2's dirctly into the thin client (don't know if this would be possible, with the heat and the fact they do draw a couple of Watts). They're well worth the minimal investment. The new ones will run some version of Windows 10 (if you're into that sort of thing). At $35 (not sure what they're priced like in your area) they're a steal. Of course, getting that old neoware up and running might be a fun project, too. Not too much power draw, and those USB 2.0 ports should be able to provide enough juice to drive the U2. |
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So I have an S3 I run just a bit as a side thing and since it isn't on a lot I like to keep it on PPS not PPLNS, I am currently using F2pool but they have way too much hashrate and I need to move it. I was going to put it on btcguild but they're shutting down, what is the next best pps pool out there? I just want to get away from the massive hashrate even if I have just a couple of hundred gigahash.
BTCG was PPLNS, so you aren't missing a possible choice for a PPS pool regardless of whether or not they are shutting their doors . Nicehash/Westhash are a 3% PPS pool. You might point your gear there. The only other PPS pool I know of is BAN, and I would wholeheartedly advise you to NOT point your hash there. Sounds good for nicehash and I assume 3% is the fee they take? Just a question why is BAN not advised? Yes, the 3% is the fee NH/WH takes. BAN is not advised because they're pretty much a mess. I refer you to this thread: https://bitcointalk.org/index.php?topic=854368.980. |
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New Bitcoin block was found! Congratulations to 16fQsshcYFUe6FbyGPMmUJnMBYjgLZL3vR!
Man, that guy is hitting the lottery... he just found a couple blocks solo on -ck's pool, too! |
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So I have an S3 I run just a bit as a side thing and since it isn't on a lot I like to keep it on PPS not PPLNS, I am currently using F2pool but they have way too much hashrate and I need to move it. I was going to put it on btcguild but they're shutting down, what is the next best pps pool out there? I just want to get away from the massive hashrate even if I have just a couple of hundred gigahash.
BTCG was PPLNS, so you aren't missing a possible choice for a PPS pool regardless of whether or not they are shutting their doors . Nicehash/Westhash are a 3% PPS pool. You might point your gear there. The only other PPS pool I know of is BAN, and I would wholeheartedly advise you to NOT point your hash there. |
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On that note, what pool can you recommend to an average Joe with an S5?
Use this : http://nodes.p2pool.co/example = http://minefast.coincadence.com/user = Bitcoin address password = nothing when P2Pool find a block, you will be pay automaticly ... without manual withdraw or minimal amount. Ideally, OP would want to run his own p2pool node. However, your suggestion is valid if they don't want to bother with the hassle and just want to point that S5 to an existing node |
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I think one thing worth mentioning here is that all of the numbers provided thus far are based upon current conditions: the current difficulty, the current exchange value of BTC, etc. As things stand now, with BTC valued about $250, you've got to have extremely cheap power costs to break even, much less make a profit from mining. The hardware you're using obviously has an impact as well. Using a GPU to mine BTC is absurd because of the high power to hash ratio. Even the currently available, most efficient ASIC gear is still between 0.4 and 0.5W per GH/s.
Things change quite a bit if the exchange rate of BTC goes to $1000 a coin, or some new hardware comes out at 0.1W per GH/s, or the difficulty drops dramatically.
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No, she'd probably be pretty upset. €0.27 per kWh means an S3 will cost you roughly €2.20 per day to run. Currently, that S3 expects to make €0.97 a day. For an S5 you'll do a little better, but still not going to make anything... €3.82 to run a day, expects to make €2.91 a day. Might want to hold off on taking it to the next level I actually wasn't planning on taking it to the next level anyway, i was aware of the fact that the more hashing power i burn in my home, the more money it'll cost me. Energy prices in my country are insane... I'm just going to use my (future) U2's to mine some BTC and to experiment. I'm aware of the fact that running a server (i've got an old HP Proliant gathering dust) with those 2 usbsticks will consume a lot more power that can ever be made with the BTC it'll mine... But i don't really care  I laughed pretty hard on that one Rather than fire up an old HP server, you can easily plug those sticks into an rPi, or even whatever laptop you're currently using. I've got 5 of them in a powered USB hub, and that hub is plugged into my rPi. The rPi has cgminer 4.9.1 compiled from source running. I point them to -ck's solo pool because you never know .  The cost to run it is virtually negligible... the U2s draw about 12.5W total and the rPi about 2.5W. 15W total consumption costs me about $0.04 a day. With your insanely high electricity costs, that same setup would cost you about €0.10 a day. Since you're only talking about 2 U2s, that would be a total power draw of 7.5W and about €0.05 a day. Pretty sure you could slip that one by the wife without notice . Of course, solo mining with only 2 U2s, you've got about a 1 in 617589 chance a day of finding a block at current difficulty levels... but at the cost of playing, it's worth it. |
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Everybody's going to have different opinions, so let me be the first to give you one . -ck/kano (the guys who wrote the software that your S5 uses to mine) run kano.is. Straightforward, no-nonsense pool. P2Pool. I've run my own node for over a year. It's nice and decentralized, and has treated me very well. Some people have reported issues with S5s on p2pool. Others have reported they work just fine. One of the miners on my node uses an S5 and it works just fine. Try solo mining because why not? It's risky, but what if you hit? If you want to rent your gear out to people, try Mining Rig Rentals (yes, that's a referral link... feel free to not use it). I use that service and have had great success both renting out my own gear, and renting other's gear. Also, you can try NiceHash / WestHash (no referral links there). Hope this helps. |
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You are completely right, there is no ROI, but it's a good chance to understand how it works the mining, and motivate you to upgrade to the next level Good luck altcoinhosting Thanks Altough i'm not completely sure my wife will like it if i take mining to the next level (our Kwh rate is €0.27  )... No, she'd probably be pretty upset. €0.27 per kWh means an S3 will cost you roughly €2.20 per day to run. Currently, that S3 expects to make €0.97 a day. For an S5 you'll do a little better, but still not going to make anything... €3.82 to run a day, expects to make €2.91 a day. Might want to hold off on taking it to the next level |
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No tweaking here. Two production units out of the box. No down time for 6 months. Overclocked to 1.25TH/s.
If that's the case, & you're using bitmains cgminer - you're losing potential earnings. You should use kano's cgminer for the S5 instead as mentioned a page or so back  Edit: Just a heads up - Matt Corello has released an updated version of his excellent relaynodeclient with some huge performance improvements - p2pool users can benefit greatly by using his software: http://bitcoinrelaynetwork.org/https://github.com/TheBlueMatt/RelayNodeNice stuff Matt Been using it for quite some time on my node. Songminer, I highly suggest downloading and using -ck's cgminer for the S5. Bitmain's throws away potential block solving shares. |
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Right so if we take the S5 figure, for instance, and extend it with the average 144 blocks per day, I think it's 1 in 309,314.88. I also think all of these calculations are all restatements of what everyone in this thread said earlier. The lotto-type odds rely on difficulty and local hashrate. Difficulty depends on target. Target is reset every 2016 blocks based on global hashrate. I've no idea mate I just go on coinwarz figures they seem to be pretty accurate. EDIT: At the end of the day the more hash you have the better you're chance . Yep. But at the end of the day I want to be able to tell people what my odds are at hitting a block when running a little home miner (R-Box or U3... Maybe U2 or other USB miner). So for instance, at current difficulty, I can tell someone that little funny looking thing on my shelf gives me a 1 in 5.5 million shot at $6250 every 10 minutes or so for the cost of 15 cents a day. (of course at current btc value). It's a little easier way of explaining it to people to engrained in difficulties, blocks, hashrates, etc. You do that exactly the way it's been explained. You can either do the math by yourself, or use an online calculator like bitcoinwisdom.com to figure out how much you'd expect to earn in a day and then divide 25 that number... just as I showed in my example. A U2 (figuring 2GH/s)... your chance is 1 in 1,235,177.87 a day. |
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I will give that a whirl, I had an SSD on standby that I can use.
An SSD will certainly provide faster I/O time than the mech drives. I was referring to creating a RAM drive and using that as the data directory for bitcoind. Assuming some flavor of Linux: mkdir /mnt/ramdisk
mount -t tmpfs -o size=50G tmpfs /mnt/ramdisk
This of course assumes you've got enough RAM to cover that request. Then you put the bitcoin data directory there, start your bitcoin daemon to point to the new ramdisk data directory. |
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I explained, with example, just how to get that 1 in X chance. The problem you face is that it's only an expected chance, because each submitted hash has just as much of a chance at solving the block as the one before it. There is no concrete way to say that you have exactly 1 in X, for the very reasons I stated above. You get an expected chance given hash rate and difficulty, not an absolute.
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Yup...."It's in the works".
edit: You actually get 'renters' for your S3+s?
All the time. My gear is rented as I type... Latest rental was for a week |
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16fQsshcYFUe6FbyGPMmUJnMBYjgLZL3vR Strike 2 ! EDIT: Adios big share ! 16fQsshcYFUe6FbyGPMmUJnMBYjgLZL3vR block confirmed. Congrats on another solo block solve! Pretty hefty hash rate: {"hashrate1m": "781T", "hashrate5m": "761T", "hashrate1hr": "746T", "hashrate1d": "647T", "hashrate7d": "254T", "lastupdate": 1434562801, "workers": 13, "bestshare": 893915242.57804012}
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question : can i connect an bitmain product in USB without the linux card controller ? I remember there was a bounty out there to see if anyone could connect S1 boards to use an rPi as the controller... not sure how that ever turned out. Also, you might want to check out sidehack's BM1384 project. They're trying to build their own miner based on the chips in the S5. I think they're designing their own PCBs, so it's not a direct "take Bitmain board and use different controller". |
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Not to nitpick here...
Upgrading your service from 100A to 200A will get you only 22kW of total new power, or 17.6kW usable. Just want to make sure you understand that you're not going to have 24kW available for use out in those sheds, unless of course you don't mind tapping into the original 100A you had in your home already. You'll need just about 136A out to those sheds to get 24kW of usable power.... this is all assuming you've got 220V service.
Thanks for this! I called him and I misunderstood he is not upgrading my service but rather installing an additional 200 amp service. Gotcha... an extra 200A will provide you plenty of power. Now, of course, the question becomes, "how much are you paying for your electricity?". Hopefully you're getting a good rate, or you're going to charge your brother a boatload for hosting his miners |
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Hey all,
I have noticed that the latency has been rising in general. I still fall back to 0.4s and below but the general trend seems to be an upwards curve. I was wondering what kind of things could influence that kind of behaviour. Network traffic is fairly stable and definitely not following the same trend. What kind of things affect latency. Topology seems to have no effect.
I'm assuming you're referring to the GBT latency. That's wholly dependent upon your CPU/RAM. Some people have successfully created a huge virtual RAM drive and keep the entire blockchain there, and they've got absurdly low GBT latency because of it. |
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Bitmain hardware is awful. IMHO the last good hardware they made were the S1s. Everything from there has gone downhill.
As others have correctly stated, p2pool "restarts" the work a lot more often than "conventional" pools. In layman's terms, the conversation between your miner and p2pool goes something like this:
p2pool: here is some work, stop everything you are doing and start working on this
miner: got it, I'll start working on it as soon as possible
(avg 30 seconds later): p2pool: here is some work, stop everything you are doing and start working on this
miner: got it, I'll start working on it as soon as possible
and so forth. That "stop everything you're doing" part is what Bitmain hardware sucks at doing. Spondoolie hardware seems to manage it just fine. As always, YMMV. Some folks have luck tweaking their S2/S3/S4/S5/Swhatever, sometimes regularly. I never had any luck with it, and have long since given up on Bitmain junk hardware.
For comparison, conventional pools look like this:
pool: here is some work, switch when you can, I'll continue accepting your prior work for a while
miner: got it, I'll start working on it as soon as possible
pool: here is some work, switch when you can, I'll continue accepting your prior work for a while
miner: got it, I'll start working on it as soon as possible
pool (approx ~10 mins): here is some work, stop everything you are doing and start working on this
M
You got it. The reason is because of the share-chain shares in p2pool. Approximately every 30 seconds (averaged, it could be 1 second, it could be 100), a new share is added to the share chain. P2Pool broadcasts the "stop everything" message every time this happens. In a traditional pool, that "stop everything" message only comes once a block is found. Traditional pools will broadcast new work, i.e. they've just done a GBT call and created a new chunk of work for miners, but they don't force a restart, they'll still accept the old work from the miner. Edit: The only cases where p2pool behaves differently is when a miner submits a share that solves a block of BTC. A dead share is work that a miner was doing on a previous set of work after the node has accepted a newer share on the chain. If that share solves a block, it gets submitted and if accepted, miners are paid based on the information in that share. This is also why sometimes you'll see a p2pool mining transaction in your wallet, but your node UI doesn't show the block. Since that share never made it onto the share chain, the UI doesn't see it. |
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Forgive me if this has already been addressed... and if you've been asked like 1000 times already, I apologize for making this the 1001st query . The latest S3 binary I see is from last year and is version 4.6.1. I know that the NH/WH guys have some version they coded based on 4.7 for the extranonce subscription. Am I missing a newer version for the S3, or is the 4.6.1 the latest? OK... back on topic... gee, there's a surprise about needing to push empty blocks because it's faster /sarcasm. I know this doesn't quite answer your question, but I have the NH/WH cgminer on some of my S3+'s and it seems to mine fine. Only problem with it is that the miner status page no longer shows any data from the bottom section. So I cant monitor temp, asic status, fan speed, freq, etc. I've got 8 S3s mining. 6 of them I have listed on MRR, and each of those 6 uses the NH/WH patched version of cgminer to provide renters with the option of pointing them to pools that require it. The other 2 I have pointed at OgNasty's pool, and they are using the cgminer binary from -ck's site (4.6.1 dated from 20 Oct 2014). All of the S3s use Bitmain's latest firmware update (antMiner_S320150109.bin). If you flashed with the Jan 2015...that's the latest, so far. I didn't care for the NH/WH version for the reasons already explained. BitMain is no longer supporting our S3s(+), but there is a newer version ... and I think I quote this correctly..."It's in the works", or something to that effect. You are good until then. I use the NH/WH version because I like to provide the option to renters and give them a wider range of pools on which they can mine. As for any newer version of the firmware from Bitmain, I doubt we'll see anything official from them - they've pretty much dropped the support for it as you stated. The reason I asked my question initially was because I thought I remembered reading that -ck/kano were working on providing a newer cgminer binary for the S3 (based on cgminer 4.9.x). |
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