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November 10, 2012, 12:33:28 AM |
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Pools don't receive a report of miner hashrate, they get difficulty 1 share submissions and must extrapolate what the miner hashrate may be.
The average number of hashes required to find a difficulty one share is:
2**48 / 65535
so we estimate 4,295,032,833 hashes performed by a miner per share submitted.
Then lets estimate a miner's hashrate for the last 10 minutes (600 seconds):
S Shares/600 seconds * 4,295 MHash/share = S (4295/600) MHash/second = S * 7.158388 Mhash/s,
so if a miner finds 60 shares in this 10 minutes, their estimated hashrate is 429.5 Mhash/s.
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