USER FAQ: what does each part of the node logs mean?

Many users on Discord have asked whether their node logs are normal or not and what they are supposed to look like/mean.

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(above CLI is on Mac OS)
In general (definition credits to @wei):

  • “bps” = blocks per second
  • “target” = longest peer chain connected so far
  • “best” = current highest block number synced so far (downloaded)
  • “finalized” = always 0 because there is no “final block”, but a probabilistic finality after k number of deep blocks
  • “down arrow” = download speed
  • “up arrow” = upload speed

If the logs are showing idle repeatedly, please refer to this forum post. In general, it should be ok. Node Terminal Stuck at "Idle"