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Author Topic: P2Pool Low Efficiency  (Read 2150 times)
azw409
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May 13, 2013, 07:04:21 PM
 #1

Hi all,

I'm trying to use P2Pool, which I've set up and been running for nearly 24 hours now and it's working. I'm using Phoenix miner, a ATI 6870 (about 267Mh/s) on Windows 8 with P2Pool running on the same machine.

I've received about 0.01 BTC today which is about 60% less than I was expecting but I understand that there's variance and the 24 hour loyalty thing might be reducing my takings so I'm not too concerned just yet.

The thing that concerns me is the very high rejection rate at around 40% as measured by the miner and the local efficiency of 86% :-

Version: 11.4

Pool rate: 646GH/s (23% DOA+orphan) Share difficulty: 1150

Node uptime: 0.911 days Peers: 6 out, 0 in

Local rate: 293MH/s (41% DOA) Expected time to share: 4.67 hours

Shares: 3 total (0 orphaned, 1 dead) Efficiency: 86.85%

Is this normal or is there something that I should be doing to improve it ? I've opened up my 9332 port but that doesn't seem to have made any difference.

Thanks from a newbie
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May 13, 2013, 07:46:26 PM
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at 267 megahash 0.01 btc is more than what you should get
azw409
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May 13, 2013, 08:17:46 PM
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How do you work this out as I was regularly making around 0.016 / day on 50btc ?

Thanks
maqifrnswa
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May 14, 2013, 12:29:00 AM
 #4

Check out:
https://bitcointalk.org/index.php?topic=153232.0

for ways to improve efficiency.

quick comments:
41% DOA seems really high, something might not be configured correctly. Check out the link above for how to improve it.

The efficiency number doesn't have enough data yet to be accurate. If you looked at your console output, it'll say something like Efficiency: 85.85% (20%-110%), or something like that in the parenthesis. As long as 100% is inside of the range of the parenthesis you're probably ok (but that 40% DOA doesn't look right)

Payouts to p2pool have higher variance than PPS. If you normally get .016 / day on 50 btc, then you may get .032 BTC on day on p2pool and zero BTC the next. You have to keep track of your earnings over a longer period of time. If your efficiency is >= 100%, you will, on average, earn more than any other pool. The downside risks that will decrease your earnings include: how stable is your p2pool and bitcoin nodes? could extra latency creep into your connections? Do you have the bandwidth for a bitcoind and p2pool node?
azw409
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May 14, 2013, 06:08:46 PM
 #5

I switched to CGMiner and it looks much healthier: DOA rate now ~5 %

CGMiner uses stratum rather than GW + LP so maybe it gets fewer rejects.
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