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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2035102 times)
tiberiandusk
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October 31, 2012, 02:26:34 AM
 #3681

Since moving the blockchain I haven't had any errors so far. I think it was caused by my c:\ drive being an old IDE drive I stuck in as a replacement when my SATA one failed a couple months ago.

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matthewh3
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October 31, 2012, 03:17:36 AM
 #3682

How do you donate BTC and LTC into P2Pool development.  I couldn't find any wallet addresses anywhere?

Krak
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October 31, 2012, 03:23:23 AM
 #3683

How do you donate BTC and LTC into P2Pool development.  I couldn't find any wallet addresses anywhere?
Either run your node with the --give-author [percentage] flag or this: https://bitcointalk.org/index.php?topic=57027.0

Also, forrestv has an address in his sig: 1J1zegkNSbwX4smvTdoHSanUfwvXFeuV23

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BitCoiner2012
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October 31, 2012, 03:37:16 AM
 #3684

I love P2Pool! Great stuff since August.

BTC Long.
sharky112065
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October 31, 2012, 07:02:39 AM
 #3685

yey just 2 blocks in 1 minute Cheesy

wtf? shut the hell up Cheesy

p2pminers are unionized, if they hear you talking about luck they'll take the week off.
lol why should they Cheesy

We do not use the L word here and do not talk about it in any round about ways. Usually when someone does mention it, things go badly.

Yeah the problem there is that there are some people who actually believe that the text placed on this forum can negatively affect the pseudo-random distribution of bits coming out of a fixed non-random mathematical equation Tongue

Kano, stop spreading FUD. I have luck charms for sale and you're ruining my market.

I'll trade you a Kano for one.

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ancow
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October 31, 2012, 07:47:30 AM
 #3686

https://github.com/forrestv/p2pool/commit/38d9d89a88086abe219a270f43e940f074066cd7 :
Quote
decremented desired_version to 7 to prevent switchover for now

Does anyone have an explanation for this? Huh

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rav3n_pl
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October 31, 2012, 12:44:30 PM
 #3687

https://github.com/forrestv/p2pool/commit/38d9d89a88086abe219a270f43e940f074066cd7 :
Quote
decremented desired_version to 7 to prevent switchover for now

Does anyone have an explanation for this? Huh
Ye, I was surprised by growing v7 from thin air lol. Why we want to delay switch to v8? Forrestv found some  bad buggys?

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forrestv
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October 31, 2012, 03:15:41 PM
 #3688

https://github.com/forrestv/p2pool/commit/38d9d89a88086abe219a270f43e940f074066cd7 :
Quote
decremented desired_version to 7 to prevent switchover for now

Does anyone have an explanation for this? Huh
Ye, I was surprised by growing v7 from thin air lol. Why we want to delay switch to v8? Forrestv found some  bad buggys?

Yes, there's a bug that Smoovius reported on the Litecoin P2Pool, which would also apply to the Bitcoin one. P2Pool's memory usage can grow without bound after a fork like this if you maintain connections to people mining on both forks. P2Pool is unable to forget about the children of the root node that connects the two forks, due to that operation simply not being implemented. (I assumed that one fork would always lose eventually, resulting in a linear chain whose last node can be forgotten about.)

Anyway, it's fixed in git, and after some more testing, I'll release v9 and the switchover will be triggered when v9 becomes popular. Restarting P2Pool after the switch would have been enough to fix this, but many people don't have something auto-restarting P2Pool if it crashes or even check up on it often.

The switchover happened on the Litecoin P2Pool about a week ago, and went flawlessly other than this issue.

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rav3n_pl
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October 31, 2012, 05:44:27 PM
 #3689

Odd, I wasu sure that "final fork" will be automagically in 24hrs from version switch ("old" chain forgot).
Good that huge memory consumer was found.
In fact, I did not noticed that bug on my LTC node ;]

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sharky112065
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October 31, 2012, 08:58:34 PM
 #3690

https://github.com/forrestv/p2pool/commit/38d9d89a88086abe219a270f43e940f074066cd7 :
Quote
decremented desired_version to 7 to prevent switchover for now

Does anyone have an explanation for this? Huh
Ye, I was surprised by growing v7 from thin air lol. Why we want to delay switch to v8? Forrestv found some  bad buggys?

Yes, there's a bug that Smoovius reported on the Litecoin P2Pool, which would also apply to the Bitcoin one. P2Pool's memory usage can grow without bound after a fork like this if you maintain connections to people mining on both forks. P2Pool is unable to forget about the children of the root node that connects the two forks, due to that operation simply not being implemented. (I assumed that one fork would always lose eventually, resulting in a linear chain whose last node can be forgotten about.)

Anyway, it's fixed in git, and after some more testing, I'll release v9 and the switchover will be triggered when v9 becomes popular. Restarting P2Pool after the switch would have been enough to fix this, but many people don't have something auto-restarting P2Pool if it crashes or even check up on it often.

The switchover happened on the Litecoin P2Pool about a week ago, and went flawlessly other than this issue.

Well thanks to Smoovius for finding it and to you for fixing it.

What is the plan for ASIC's? Will it require a switchover as well? If it requires a switchover, why not do it now instead of waiting until ASIC's are already out and about?

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forrestv
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October 31, 2012, 10:19:46 PM
 #3691

What is the plan for ASIC's? Will it require a switchover as well? If it requires a switchover, why not do it now instead of waiting until ASIC's are already out and about?

I don't think ASICs will need any special support. P2Pool can provide getwork results fast enough for hundreds of GH/s (from a normal computer) and could be optimized for more. In addition, any timestamp rolling multiplies that.

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Krak
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October 31, 2012, 11:01:39 PM
 #3692

I don't think ASICs will need any special support. P2Pool can provide getwork results fast enough for hundreds of GH/s (from a normal computer) and could be optimized for more. In addition, any timestamp rolling multiplies that.
What about mining on a remote node? It seems like ASICs could kill P2P Mining.

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forrestv
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October 31, 2012, 11:24:20 PM
 #3693

I don't think ASICs will need any special support. P2Pool can provide getwork results fast enough for hundreds of GH/s (from a normal computer) and could be optimized for more. In addition, any timestamp rolling multiplies that.
What about mining on a remote node? It seems like ASICs could kill P2P Mining.

Any serious P2Pool user, one serious enough to have ASICs, should definitely have their own P2Pool node...

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-ck
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October 31, 2012, 11:28:52 PM
 #3694

I don't think ASICs will need any special support. P2Pool can provide getwork results fast enough for hundreds of GH/s (from a normal computer) and could be optimized for more. In addition, any timestamp rolling multiplies that.
What about mining on a remote node? It seems like ASICs could kill P2P Mining.

Any serious P2Pool user, one serious enough to have ASICs, should definitely have their own P2Pool node...
...With ASICs being 50x more efficient, the only people mining in the future, bar a very few exceptions, will all be running ASICs.

Primary developer/maintainer for cgminer and ckpool/ckproxy.
Pooled mine at kano.is, solo mine at solo.ckpool.org
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forrestv
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October 31, 2012, 11:32:44 PM
 #3695

Any serious P2Pool user, one serious enough to have ASICs, should definitely have their own P2Pool node...
...With ASICs being 50x more efficient, the only people mining in the future, bar a very few exceptions, will all be running ASICs.

And anyone (everyone?) with an ASIC, having invested hundreds of dollars, will be a "serious miner" in my eyes...

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Krak
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October 31, 2012, 11:35:58 PM
 #3696

And anyone (everyone?) with an ASIC, having invested hundreds of dollars, will be a "serious miner" in my eyes...
Some people, such as myself, can't really afford the high bandwidth usage of running a node. That's the main reason I switched pools.

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-ck
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October 31, 2012, 11:36:41 PM
 #3697

Any serious P2Pool user, one serious enough to have ASICs, should definitely have their own P2Pool node...
...With ASICs being 50x more efficient, the only people mining in the future, bar a very few exceptions, will all be running ASICs.

And anyone (everyone?) with an ASIC, having invested hundreds of dollars, will be a "serious miner" in my eyes...
Ok... so no one will be running p2pool via a remote node?

Primary developer/maintainer for cgminer and ckpool/ckproxy.
Pooled mine at kano.is, solo mine at solo.ckpool.org
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K1773R
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October 31, 2012, 11:42:39 PM
 #3698

And anyone (everyone?) with an ASIC, having invested hundreds of dollars, will be a "serious miner" in my eyes...
Some people, such as myself, can't really afford the high bandwidth usage of running a node. That's the main reason I switched pools.
high bandwidth? WTF?

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forrestv
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October 31, 2012, 11:47:55 PM
 #3699

And anyone (everyone?) with an ASIC, having invested hundreds of dollars, will be a "serious miner" in my eyes...
Some people, such as myself, can't really afford the high bandwidth usage of running a node. That's the main reason I switched pools.

Really? P2Pool uses ~3 GB/month, normally. How much is too much for you?

With a normal pool, one getwork response/submit takes about 800 bytes of data, plus some HTTP stuff, so about 1KB for every 4 GH (2^32). At 1 GH/s, over a month, that's 650 MB (1 * (24*60*60*30) * (1000/4) / 1e6). It's probably a bit higher than that due to miners requesting more work than they need. In addition, that number scales linearly with the amount of hashing power you have, so with 3 GH/s, you're on par with P2Pool's bandwidth usage.

If I'd heard more complaints about bandwidth, I could have added an option to decrease the number of peers. Bandwidth usage is proportional to the number of peers you have, and 5 is probably enough, so you could halve the usage easily.

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Krak
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October 31, 2012, 11:48:50 PM
 #3700

high bandwidth? WTF?
~250MB a day adds up quick when you have a 150GB cap. My DSL connection also freezes up a lot when I start a download which is made much worse when I'm running p2pool. I limited my p2pool incoming connections to 5 and my Bitcoin-qt connections are limited to 10 and it's still noticeable.

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