Issue #704 - disable undo sessions for blocks older than last checkpoint

Andrzej Lisakrequested to merge
abw_no_undo_checkpoint into develop

After the changes:

  • sync up to 93M (with last checkpoint at 93M) finished in 23h 20m 45s, for comparison replay up to 93M finished in 22h 15m 7s - sync is network constrained at the beginning where blocks are empty (85% waiting for work up to 3M) or small (25% waiting for work up to 13M), later it is just marginally slower
  • colony+queen full block cycle for 2MB blocks went down from 954ms to 737ms (block reapplication itself went down from 175ms to 125ms)

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