CC Scheduler issues

[magik6k]

Observed in production:

• More than needed Batch tasks get created. Not a huge deal but unnecessary load on the scheduler
• When there are e.g. two SPs being scheduled with the same weight, and one is out of sectors to schedule, then the scheduler will still create batches with 50/50 split for both.
  • If more than needed sectors are scheduled for a miner, the remainder should be split between SPs which still need more sectors.