[1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool

[nibor]

p2pool is better than Deepbit over last 90 days (assuming deepbit had 100% luck) according to p2pool.info!

90 Luck has climbed above above 97% so if you add in the 0.2% of transaction fees you get from p2pool and subtract the 3% fee deepbit would have charged you, you would have been better off on p2pool over the last 3 months.

Shame I can't use my BFL single (or has anyone got a solution for the 5sec issue?)!

[Smoovious]

Shame I can't use my BFL single (or has anyone got a solution for the 5sec issue?)!

5sec issue?

-- Smoov

[nibor]

Shame I can't use my BFL single (or has anyone got a solution for the 5sec issue?)!

5sec issue?

-- Smoov

BFL FPGA singles search all 4b nounces before returning control to the miner with a list of 1 difficulty shares it has found. This takes about 5 seconds. In this 5 seconds when mining on a "normal" pool the chance of a block being created is very small so you get very few stales.

On p2pool there is a new share every 10 seconds. So with BFL FPGA single you get about 50% stales. BFL need to fix this issue.

[racerguy]

From what I can gather the bfl's can only be given new work every 10 secs which for p2pool means they produce 50% stales.

[mdude77]

Shame I can't use my BFL single (or has anyone got a solution for the 5sec issue?)!

5sec issue?

-- Smoov

BFL FPGA singles search all 4b nounces before returning control to the miner with a list of 1 difficulty shares it has found. This takes about 5 seconds. In this 5 seconds when mining on a "normal" pool the chance of a block being created is very small so you get very few stales.

On p2pool there is a new share every 10 seconds. So with BFL FPGA single you get about 50% stales. BFL need to fix this issue.

Increasing difficulty doesn't fix it?

M

[kwukduck]

i've been mining with p2pool for a while now and today i thought of counting what i had mined, the average of the last month is about 0.17 btc/day, i compared this to what i should get at my speed (625MHash) which is about 0.34 btc/day. I haven't used a regular pool for a while now so i can't really say if that would be any better.
I knew p2pool had slightly lower rewards then regular pools but i didn't expect to lose 50%...
Is there something wrong with my config or is this normal?

[mdude77]

i've been mining with p2pool for a while now and today i thought of counting what i had mined, the average of the last month is about 0.17 btc/day, i compared this to what i should get at my speed (625MHash) which is about 0.34 btc/day. I haven't used a regular pool for a while now so i can't really say if that would be any better.
I knew p2pool had slightly lower rewards then regular pools but i didn't expect to lose 50%...
Is there something wrong with my config or is this normal?

This is not normal.  What's your stale rate?

M

[kwukduck]

i've been mining with p2pool for a while now and today i thought of counting what i had mined, the average of the last month is about 0.17 btc/day, i compared this to what i should get at my speed (625MHash) which is about 0.34 btc/day. I haven't used a regular pool for a while now so i can't really say if that would be any better.
I knew p2pool had slightly lower rewards then regular pools but i didn't expect to lose 50%...
Is there something wrong with my config or is this normal?

This is not normal.  What's your stale rate?

M

p2pool window says 9%
I also noticed a big variance in payout 0.02~0.09 btc per payout.

[mdude77]

i've been mining with p2pool for a while now and today i thought of counting what i had mined, the average of the last month is about 0.17 btc/day, i compared this to what i should get at my speed (625MHash) which is about 0.34 btc/day. I haven't used a regular pool for a while now so i can't really say if that would be any better.
I knew p2pool had slightly lower rewards then regular pools but i didn't expect to lose 50%...
Is there something wrong with my config or is this normal?

This is not normal.  What's your stale rate?

M

p2pool window says 9%
I also noticed a big variance in payout 0.02~0.09 btc per payout.

I'm far from an expert in p2pool, so I'll throw some simple math out here that I think is right.

Assuming a perfect world, at the current pool hash rate and difficulty, p2pool gets a block ~10 hours.  That's 2.4 blocks a day.

Current pool hash rate is 235g/h, or 235,000 m/h.  Your piece of that hash rate is 625/235000.  Multiply that times block payout, say 50btc even, and you get ~0.133 btc/block.  At 2.4 blocks a day, that 0.32 btc/day.  So I agree with your calculation.

So, we just got a block.  What was your payout?  I'm currently at 4870m/h, pool is as 243,000m/h.  Using the above math, my piece of the pie should be around 1btc, I got 0.89.  I think my shares are low recently - 24 hours ago my payouts were real close to 1btc.

Are you running 24/7?  I think the payout is based on your share of the shares over the last 24 hours.  If you aren't running 24/7, you are cutting yourself short. 

Come to think of it, since the pool seems to fluctuate between 200g/h and 300g/h, there's either something funny going on or a lot of people are shorting themselves.

M

[kwukduck]

Yes, i'm running 24/7.

p2pool tells me my hash rate is much lower then my actual mining speed (about 60%) and whenever my miner finds a new share it's not added to the p2pool count.
I recently started it and my miner tells me i found 50 shares (all accepted), p2pool says 15?
very confused...

[mdude77]

Yes, i'm running 24/7.

p2pool tells me my hash rate is much lower then my actual mining speed (about 60%) and whenever my miner finds a new share it's not added to the p2pool count.
I recently started it and my miner tells me i found 50 shares (all accepted), p2pool says 15?
very confused...

How much did you get from the last block?

I know my hash rate swings all over the place, between 4500m/h and 5100m/h, depending on when I look at it.  Are you checking the local graphs to give an average, or just at the console?

I've read a few times that there are actually two block chains, one for p2pool, and one for bitcoin, or something like that.  I don't follow the logic at all, but what you are describing makes sense with what others have said.  Maybe someone will chime in who can explain this better.

M

[kwukduck]

Yes, i'm running 24/7.

p2pool tells me my hash rate is much lower then my actual mining speed (about 60%) and whenever my miner finds a new share it's not added to the p2pool count.
I recently started it and my miner tells me i found 50 shares (all accepted), p2pool says 15?
very confused...

How much did you get from the last block?

I know my hash rate swings all over the place, between 4500m/h and 5100m/h, depending on when I look at it.  Are you checking the local graphs to give an average, or just at the console?

I've read a few times that there are actually two block chains, one for p2pool, and one for bitcoin, or something like that.  I don't follow the logic at all, but what you are describing makes sense with what others have said.  Maybe someone will chime in who can explain this better.

M

Last block was 0.068, i've seen worse

[Smoovious]

Yes, i'm running 24/7.

p2pool tells me my hash rate is much lower then my actual mining speed (about 60%) and whenever my miner finds a new share it's not added to the p2pool count.
I recently started it and my miner tells me i found 50 shares (all accepted), p2pool says 15?
very confused...

What miner is being used... got failovers set up?

-- Smoov

[rav3n_pl]

Yes, i'm running 24/7.

p2pool tells me my hash rate is much lower then my actual mining speed (about 60%) and whenever my miner finds a new share it's not added to the p2pool count.
I recently started it and my miner tells me i found 50 shares (all accepted), p2pool says 15?
very confused...

Miner is reporting diff=1 shares - pool is using this to tell you local hashrate. Check on your graph that you have doa/stales, i never see to pool reports 60% of actual hashrate. After restarting pool/miner wait 10 mins to pool recalculate your rate in last 10 mins.
Pool reports diff=~600 shares to payout. We are mining p2pool blockchain where we have pool block about every 10 sec and diff is fluctuating depends on speed of last share found.

Thats why you (and everyone mining p2pool) have lot more shares reported by pool than by miner.

Check your graphs, it should show you what is going on.

[mdude77]

Last block was 0.068, i've seen worse

You're right, that's about 1/2 of what it should be.

I think I figured out the two blockchain logic.

One is for p2pool to keep track of who has what proportions, so that when a block on the real chain is found, it can be divvied up properly.

M

[zvs]

Come to think of it, since the pool seems to fluctuate between 200g/h and 300g/h, there's either something funny going on or a lot of people are shorting themselves.

well, mine varies based on outside temperature and if i'm using my main computer or not, from 2500-6000, i've got another 2000mhash or so, but p2pool doesn't like my hub and the computers that use it get like 50% reject rates.

but i did finally decide to just buy a switch, prolly get here on mon or tues

[racerguy]

i've been mining with p2pool for a while now and today i thought of counting what i had mined, the average of the last month is about 0.17 btc/day, i compared this to what i should get at my speed (625MHash) which is about 0.34 btc/day. I haven't used a regular pool for a while now so i can't really say if that would be any better.
I knew p2pool had slightly lower rewards then regular pools but i didn't expect to lose 50%...
Is there something wrong with my config or is this normal?

Have you forwarded the p2pool port to allow incoming connections?  Even if you haven't though that low payout is a bit strange

[rav3n_pl]

I think I figured out the two blockchain logic.
One is for p2pool to keep track of who has what proportions, so that when a block on the real chain is found, it can be divvied up properly.
M

Exactly. Basing on pool sharechain each node can calculate how to cut block prize
And because closing transaction is included to block it is impossible to cheat

[twmz]

Yes, i'm running 24/7.

p2pool tells me my hash rate is much lower then my actual mining speed (about 60%) and whenever my miner finds a new share it's not added to the p2pool count.
I recently started it and my miner tells me i found 50 shares (all accepted), p2pool says 15?
very confused...

What does this line say from the p2pool console?

Code:

Local: 1639MH/s in last 10.0 minutes Local dead on arrival: ~0.9% (0-4%) Expected time to share: 24.4 minutes

It should be very close to what your actual hashrate is as it is based on diff 1 shares which have reasonably low variance.  Let us know what the reported hashrate is along with the local dead on arrival rate.

[kwukduck]

After running on a pool for 12 hours or so i noticed that also the pool only registers about half of my speed. So i changed my miner, guess what, looking much much better now! I'm going to try on p2pool now see what it does.

I was using DiabloMiner, now changing to CGMiner.