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@@ -1,3 +1,53 @@
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+Version 2.7.0 - August 18, 2012
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+
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+- Introduce a new statistic, Work Utility, which is the number of difficulty 1
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+shares solved per minute. This is useful for measuring a relative rate of work
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+that is independent of reject rate and target difficulty.
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+- Implement a new pool strategy, BALANCE, which monitors work performed per pool
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+as a rolling average every 10 minutes to try and distribute work evenly over all
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+the pools. Do this by monitoring diff1 solutions to allow different difficulty
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+target pools to be treated equally, along with solo mining. Update the
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+documentation to describe this strategy and more accurately describe the
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+load-balance one.
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+- Getwork fail was not being detected. Remove a vast amount of unused variables
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+and functions used in the old queue request mechanism and redefine the getfail
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+testing.
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+- Don't try to start devices that don't support scrypt when scrypt mining.
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+- 0 is a valid return value for read so only break out if read returns -1.
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+- Consider us lagging only once our queue is almost full and no staged work.
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+- Simplify the enough work algorithm dramatically.
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+- Only queue from backup pools once we have nothing staged.
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+- Don't keep queueing work indefinitely if we're in opt failover mode.
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+- Make sure we don't opt out of queueing more work if all the queued work is
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+from one pool.
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+- Set lagging flag if we're on the last of our staged items.
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+- Reinstate clone on grabbing work.
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+- Grab clones from hashlist wherever possible first.
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+- Cull all the early queue requests since we request every time work is popped
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+now.
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+- Keep track of staged rollable work item counts to speed up clone_available.
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+- Make expiry on should_roll to 2/3 time instead of share duration since some
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+hardware will have very fast share times.
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+- Do the cheaper comparison first.
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+- Check that we'll get 1 shares' worth of work time by rolling before saying we
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+should roll the work.
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+- Simplify all those total_secs usages by initialising it to 1 second.
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+- Overlap queued decrementing with staged incrementing.
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+- Artificially set the pool lagging flag on pool switch in failover only mode as
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+well.
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+- Artificially set the pool lagging flag on work restart to avoid messages about
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+slow pools after every longpoll.
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+- Factor in opt_queue value into enough work queued or staged.
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+- Roll work whenever we can on getwork.
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+- Queue requests for getwork regardless and test whether we should send for a
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+getwork from the getwork thread itself.
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+- Get rid of age_work().
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+- 0 is a valid return value for read so only break out if read returns -1.
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+- Offset libusb reads/writes by length written as well in ztex.
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+- Cope with timeouts and partial reads in ztex code.
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+- fpga serial I/O extra debug (disabled by default)
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+
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+
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Version 2.6.5 - August 15, 2012
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- Don't try to get bitforce temperature if we're polling for a result to
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Con Kolivas