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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2029425 times)
Subo1977
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June 23, 2013, 11:33:12 AM
 #5821

five days no block, bad luck! Cry

it's not luck. I'ts variance.....

the you will have day's with 5 Blocks Smiley

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June 23, 2013, 12:36:26 PM
 #5822

5 days none, 1 day 5 blocks
No luck, just an average

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June 23, 2013, 02:42:02 PM
 #5823

tell me more about the 1 day 5 block
i'm ready

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June 23, 2013, 02:46:35 PM
 #5824

You may subscribe to my bitpoppool prediction service

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June 23, 2013, 04:56:46 PM
 #5825

OK, so I've been looking at my orphans for the last 10 days or so.... about 33% of them occur after a block solve.

i guess i should also mention that 50% of them are orphaned by

1CTgYxMTY5j6SLytKeMsBWAXuUc6yNKcAe

and i know he isnt using an asic, so why so slow?

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
freshzive
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June 23, 2013, 05:25:48 PM
 #5826

Been testing my upgraded Jally on p2pool after the reports that BFL asics seemed to be doing OK. After around 18 hours, I'm seeing this:



Efficiency seems OK? DOA is high though, should I be worried about that? Guess I will let it run a few more days and see how payouts go once we start actually solving some blocks.

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June 23, 2013, 06:13:39 PM
 #5827

Dear forrestv and p2pool node hosters,

I've made a patch which provides adaptive share and pseudoshare difficulty to the miners. I believe it might be useful to help miners with little hashrate and reduce load by enforcing high difficulty for fast miners.

Difficulty is controled by the new '-d' command line option which can have 3 values: A - adaptive, F - force adaptive, and D (or any other) - default. Default behaves just in the same way as the original version. Adaptive provides adaptive difficulty if the miner hasn't specified desired difficulty. Force adaptive provides adaptive difficulty in any case (user's desired values are ignored).

Difficulty is calculated for each username based on its hashrate according to these target rates:
- 20 shares per min(estimated time to block, chain length * share period)
- 20 pseudoshares per 10 minutes
(per user)

Source: https://github.com/baloo-kiev/p2pool-adaptive
Test node: 78.27.191.182:8349

It's about 30 lines of code (commented where necessary).
Diff: https://github.com/baloo-kiev/p2pool-adaptive/commit/10e59b9564740c6b039380b5b86fdf8071543f48

Also, I've just found out that share difficulty has upper limit of 10 times current minimal difficulty. It is set by line 123 in p2pool/data.py
Code:
bits = bitcoin_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//10, pre_target3)))
So I'd like to know what's the reason for this limitation and whether it can be changed to generate shares with even more difficulty.

PGP: 6EC48BA7
Welcome to my p2pool: BTC
GrapeApe
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June 23, 2013, 06:17:44 PM
 #5828

OK, so I've been looking at my orphans for the last 10 days or so.... about 33% of them occur after a block solve.

i guess i should also mention that 50% of them are orphaned by

1CTgYxMTY5j6SLytKeMsBWAXuUc6yNKcAe

and i know he isnt using an asic, so why so slow?

How do you know it was that address, and is it wrong to assume that you have his ip address? If so ban him don't send any more work his way. Not that it matters but that address has a huge balance by the way...
salfter
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June 23, 2013, 08:08:24 PM
 #5829

Been testing my upgraded Jally on p2pool after the reports that BFL asics seemed to be doing OK. After around 18 hours, I'm seeing this:



Efficiency seems OK? DOA is high though, should I be worried about that? Guess I will let it run a few more days and see how payouts go once we start actually solving some blocks.

I'm seeing only 84% efficiency with mine. What settings are you using? My miner name has +256 appended to it. A poster in the BFL forums is using /6000 and is getting results more like yours than mine. Given that share difficulty is only 1080 as I write this, though, wouldn't setting difficulty too high risk throwing out valid shares?

My Bitgem Pool - PPLNS, Stratum | Gridseed Miners - $25 off your first order | BTG Explorer
Tipjars: BTC 1TipsGocnz2N5qgAm9f7JLrsMqkb3oXe2 LTC LTipsVC7XaFy9M6Zaf1aGGe8w8xVUeWFvR BTG gTipsVB9qmyYHuqMMKTuCYMHpfkUFBXKrZ | My Bitcoin Note Generator | Pyramining: 1 2 3 4 5
gyverlb
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June 23, 2013, 08:29:06 PM
 #5830

I'm seeing only 84% efficiency with mine. What settings are you using? My miner name has +256 appended to it. A poster in the BFL forums is using /6000 and is getting results more like yours than mine. Given that share difficulty is only 1080 as I write this, though, wouldn't setting difficulty too high risk throwing out valid shares?

What would be a good input to have to guess how good these ASICs are would be people comparing what their efficiency was with low-latency mining devices (GPUs/Icarus/Cairnsmore1/Ztex/...) and what is their efficiency with their BFL ASIC without any p2pool node reconfiguration.
If they have a mixed setup, knowing the total hashrate of the low-latency devices and the total hashrate of the BFL ASICs can do too.

Warning: don't use different payout addresses on your node: it currently adds latency in the P2Pool process and would lower efficiency.

Currently they don't seem horrible: 84% efficiency is the worst I'm aware of. It's bad but not far from what is good enough to make it almost as good as most pools (I consider the 90-95% range to be where P2Pool starts to be the best solution for mining).
Try to tune your setup according to my guide to see if you can reach a better efficiency (see my sig).

P2pool tuning guide
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zvs
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June 23, 2013, 08:34:58 PM
 #5831

I'm seeing only 84% efficiency with mine. What settings are you using? My miner name has +256 appended to it. A poster in the BFL forums is using /6000 and is getting results more like yours than mine. Given that share difficulty is only 1080 as I write this, though, wouldn't setting difficulty too high risk throwing out valid shares?

What would be a good input to have to guess how good these ASICs are would be people comparing what their efficiency was with low-latency mining devices (GPUs/Icarus/Cairnsmore1/Ztex/...) and what is their efficiency with their BFL ASIC without any p2pool node reconfiguration.
If they have a mixed setup, knowing the total hashrate of the low-latency devices and the total hashrate of the BFL ASICs can do too.

Warning: don't use different payout addresses on your node: it currently adds latency in the P2Pool process and would lower efficiency.

Currently they don't seem horrible: 84% efficiency is the worst I'm aware of. It's bad but not far from what is good enough to make it almost as good as most pools (I consider the 90-95% range to be where P2Pool starts to be the best solution for mining).
Try to tune your setup according to my guide to see if you can reach a better efficiency (see my sig).

Isn't all that's required the base latency of the jalapeno?  How do they work?  Does it do work for 2s then spit out results?  1s?  1000ms should result in 10% DOA.

The orphans shouldnt deviate from what you'd get from using a GPU

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
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June 23, 2013, 08:36:45 PM
 #5832

OK, so I've been looking at my orphans for the last 10 days or so.... about 33% of them occur after a block solve.

i guess i should also mention that 50% of them are orphaned by

1CTgYxMTY5j6SLytKeMsBWAXuUc6yNKcAe

and i know he isnt using an asic, so why so slow?

How do you know it was that address, and is it wrong to assume that you have his ip address? If so ban him don't send any more work his way. Not that it matters but that address has a huge balance by the way...

nah, he's a major contributor to p2pool.  i think he's been mining it for years.   i'm just whining and wish he had a faster setup.  =p

I don't even know what IP he mines to, which I guess is part of the problem.  I think he's on a private node, probably with just 6 outgoing connections.

oh, I know it was that address since my orphan showed up in the 'headers' list... then I go to the parent share and click on child, and it shows what replaced your orphaned share (if it works the way I think it does, that replacement is actually dictated by the share that comes after it)

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
baloo_kiev
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June 23, 2013, 08:48:08 PM
 #5833

Been testing my upgraded Jally on p2pool after the reports that BFL asics seemed to be doing OK. After around 18 hours, I'm seeing this:



Efficiency seems OK? DOA is high though, should I be worried about that? Guess I will let it run a few more days and see how payouts go once we start actually solving some blocks.

I'm seeing only 84% efficiency with mine. What settings are you using? My miner name has +256 appended to it. A poster in the BFL forums is using /6000 and is getting results more like yours than mine. Given that share difficulty is only 1080 as I write this, though, wouldn't setting difficulty too high risk throwing out valid shares?

To little data to make judgements. At 108 total shares stale+doa rate is (23.1 +- 11.Cool%. I mean that the real rate could be up to 34.9%, which gives efficiency of 83%. So to be sure, you need to wait to get more stats (several hundreds total shares).

PGP: 6EC48BA7
Welcome to my p2pool: BTC
gilamonsterz
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June 23, 2013, 08:50:36 PM
 #5834

bahaha 5 days later, well done all
freshzive
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June 23, 2013, 08:51:50 PM
 #5835

Alright, I'll wait it out a few more days and check efficiency again.

On a more positive note: WE FOUND A BLOCK!!!! AT LAST!!!

gyverlb
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June 23, 2013, 09:56:28 PM
 #5836

OK, so I've been looking at my orphans for the last 10 days or so.... about 33% of them occur after a block solve.

i guess i should also mention that 50% of them are orphaned by

1CTgYxMTY5j6SLytKeMsBWAXuUc6yNKcAe

and i know he isnt using an asic, so why so slow?

How do you know it was that address, and is it wrong to assume that you have his ip address? If so ban him don't send any more work his way. Not that it matters but that address has a huge balance by the way...

nah, he's a major contributor to p2pool.  i think he's been mining it for years.   i'm just whining and wish he had a faster setup.  =p

I can confirm that this address is mining since ages. The user behind may have changed his/her rigs since then but when the P2Pool mining started it was either GPU or FPGA based, seems the hashrate is fairly constant too: it always was around 50-60GH/s (computed from the payouts).

If he is reading this thread, he should definitely upgrade his setup: he's probably able to shave quite a few more bitcoins by lowering his bitcoind latency (which is probably the reason why his setup is orphaning zvs shares on occasion instead of building on top of them). This should help us too: he may have mined orphan blocks (not sure of the probabilities though).

P2pool tuning guide
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GrapeApe
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June 23, 2013, 10:26:01 PM
 #5837

OK, so I've been looking at my orphans for the last 10 days or so.... about 33% of them occur after a block solve.

i guess i should also mention that 50% of them are orphaned by

1CTgYxMTY5j6SLytKeMsBWAXuUc6yNKcAe

and i know he isnt using an asic, so why so slow?

How do you know it was that address, and is it wrong to assume that you have his ip address? If so ban him don't send any more work his way. Not that it matters but that address has a huge balance by the way...

nah, he's a major contributor to p2pool.  i think he's been mining it for years.   i'm just whining and wish he had a faster setup.  =p

I can confirm that this address is mining since ages. The user behind may have changed his/her rigs since then but when the P2Pool mining started it was either GPU or FPGA based, seems the hashrate is fairly constant too: it always was around 50-60GH/s (computed from the payouts).

If he is reading this thread, he should definitely upgrade his setup: he's probably able to shave quite a few more bitcoins by lowering his bitcoind latency (which is probably the reason why his setup is orphaning zvs shares on occasion instead of building on top of them). This should help us too: he may have mined orphan blocks (not sure of the probabilities though).

I didn’t mean to sound so cold about it....

On another note I’m happy to hear that some are mining their jals on here.  I am waiting on mine and want to stay here. I read that someone has raised the difficulty to 6000 on it.  As salfter asked earlier won't this risk  throwing out good work or is the point to just get the efficiency up regardless of what it throws out. Which brings up another question if jals are throwing out easier work and the efficiency is acceptable, isn't that good for lower hash rate miners?
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June 24, 2013, 01:17:40 AM
 #5838

In the next couple days, I'm going to release a hard-forking change to P2Pool that will make the following changes:

Global changes
* Increase last transaction extranonce length from 4 bytes to 8 bytes, so full 4-byte Stratum workunits can be efficiently generated (which will prevent the need for the avalon branch)
* Delay payout calculation 1 share so that payouts can be calculated ahead of time, reducing latency between a new share being received and work being distributed to miners
* Option to set a "dust target," which increases your share difficulty so that you don't get payouts below that target

Bitcoin network
* Increase SHARE_PERIOD (average time between shares) from 10 seconds to 30 seconds, in order to make it more fair for high-latency miners (read: ASICs)

Litecoin network
* Decrease SPREAD (number of blocks a share's payout is spread over, on average) from 12 blocks to 3 blocks, significantly decreasing the dust payouts generated for miners who get a share less often than every 3 blocks the pool finds

Warnings will be spammed to miners (UPGRADE REQUIRED) once 50% of each P2Pool's mining power has upgraded and the changes will take effect 12 hours after 95% of the mining power has been upgraded, as usual.

If anyone has any recommendations for additional changes or comments on these, please respond.

1J1zegkNSbwX4smvTdoHSanUfwvXFeuV23
daemondazz
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June 24, 2013, 01:42:29 AM
 #5839

Bitcoin network
* Increase SHARE_PERIOD (average time between shares) from 10 seconds to 30 seconds, in order to make it more fair for high-latency miners (read: ASICs)

Will this increase the sharechain from 1 day to 3 days?

Computers, Amateur Radio, Electronics, Aviation - 1dazzrAbMqNu6cUwh2dtYckNygG7jKs8S
forrestv
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June 24, 2013, 01:53:27 AM
 #5840

Bitcoin network
* Increase SHARE_PERIOD (average time between shares) from 10 seconds to 30 seconds, in order to make it more fair for high-latency miners (read: ASICs)

Will this increase the sharechain from 1 day to 3 days?

I was planning on keeping it the same for now. The only disadvantage a long sharechain has is making P2Pool take a long time to start up and download shares, along with increased memory usage.

1J1zegkNSbwX4smvTdoHSanUfwvXFeuV23
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