10th November 2013 weekly pool and network statisticsOther weekly pool and network statistics posts
A reader reported that the confidence intervals for the network hashrate in figure 2 were very hard to see. I have removed the gray background and reduced the line width to make the confidence interval a bit clearer.
The gray background has also been removed from the pie chart - it also has some transparency so I think a white background will allow better contrast.
Usual pools missing from results:
50BTC and Deepbit - no blocks solved this week.
Pools with coinbase signature:
ASICMiner: "Mined By ASICMiner"
BTCGuild : "Mined by BTC Guild", "BTC Guild DE", "BTC Guild 2", "BTC Guild US2", plus a new signature, "BTC Guild GW"
Discus Fish: "七彩神仙鱼" and "Made in China"
50BTC.com: "Hi from 50BTC.com" and "50BTC.com"
GHash.IO: "ghash.io" (not current)
GIVE-ME-COINS.com: "Mined at GIVE-ME-COINS.com"
175btc.com": "Mined By 175btc.com"
Pierce and Paul: "For Pierce and Paul"
Slush's pool: "slush"
Recent coinbase messages:
258692 "To my honey, by bitfish."
259575 259622 259625 "EMC: Organofcorti lives!"
1. Network drops back even further - 1150 blocks solved this week.
Perhaps it's the effect of KNC finishing shipping and the changes in difficulty that caused, but the number of blocks solved this week was 1150 - only 14% more than expected. Hopefully the next change in difficulty wont be as extreme as the last few.
2. Most big pools have bad luck this week.
In order of crappiness of luck (worst luck to best luck):
Pool Mean shares/round/difficulty CDF
1 Itzod 1.19 0.73
2 Giga's pool 1.12 0.75
3 GHash.IO 1.11 0.96
4 Slush 1.08 0.76
5 BTCGuild 1.05 0.82
6 Bitminter 1.04 0.65
7 Eligius 0.94 0.22
8 Bitparking 0.79 0.36
9 p2Pool 0.71 0.11
10 Polmine 0.69 0.24
11 Eclipse 0.68 0.04
This means is was probably a bad luck week for the network. However, it should be noted that the CDF for all pools were within a 95% confidence interval and so when averaged over the week none had unusually good or bad luck.
4. 50BTC still at 4Ghps.
Still no news, almost no-one mining, but lots of anger in the 50BTC thread on the bitcointalk.org forum.
5. Polmine: more bouncy hashrates.
(see figure 4) A commenter on last weeks' post named 'lenny' had this to say:
Polmine's spikes in hashrate happening, because main server is running out of processing power. Right now, according to main pool operator - megavega, background thread is processing backlog of accepted shares during last couple of days, process has reached 60% so far. That's why hashrate right now seems to be higher than it's really is, and was reported lower than it really was in last couple of days.
This may be correct, however the "hashrate spikes" have been occurring since the start of the dataset - so while this may explain one of last weeks' spikes, it doesn't explain them all. Any other ideas?
Polmine's hashrate per round:
1 2013-11-04 14.36
2 2013-11-04 6.17
3 2013-11-05 178.77
4 2013-11-07 11.78
5 2013-11-09 5.23
Proofreading payments total so far: 0.105 btc.
Thanks to everyone who has submitted error reports so far! I appreciate all the help I can get. Note that with the recent increase in the exchange rate, the current payment per error has automatically dropped to 0.001 btc.
As usual, please post comments if there's anything you don't understand, with which you disagree, or just think is wrong.
You can view this weeks charts at http://organofcorti.blogspot.com.au/2013/11/november-10th-2013-weekly-pool-and.html
You can view all previous charts at http://organofcorti.blogspot.com.au/search?q=weeklypoolstatistics
and other posts and fun things at http://organofcorti.blogspot.com
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