Weekly pool statistics, 5th August 2012

Still working on another pool watch post! I think weekly pools statistics belong here though, so I'll continue reposting them weekly.

Average hashrate:

Average hashrate = Total shares / Total round time

Luck index:

log(% of network blocks solved / % of network hashrate)

Luck index = 0 is average luck

Luck index > 0 is good luck

Luck index < 0 is poor luck

Weekly average round length as a fraction of difficulty:

Average number of shares submitted per round / difficulty

If your pool isn't here and you'd like it to be, comment with  a link to a block history with round lengths and either solve times to the nearest second or a timestamp.

Highlights:

• Percentage of weekly orphans added. Caution: if only a few blocks were found in a week, only one orphaned block will make a large percentage of orphans.
• P2Pools orphaned blocks have reduced to zero since changes to the p2Pool client, and Slush has had a significant amount of orphans lately.   
• Ozcoin now has second highest percentage of network hashrate, with an average of 1718 Ghps and 11.26% of the network hashrate.
• While most pools hashrates increased significantly, only Ozcoin, Mt. Red, Bitminter and Itzod increased their proportion of the network hashrate.
• P2Pool's luck index and normalised shares per round have both been much better than average for the last four weeks.

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