Per-peer memory usage

Looks great! Even though the analysis isn’t complete yet (some field not yet accounted for as you mention), I’m just trying to come up with a few high-level takeaways so far.

  • Dynamic memory usage per tx-relaying peers is ~600kb - 1.4MB per tx-relaying peer, a large part of it is probably the rolling bloom filter m_tx_inventory_known_filter.
  • Block-Relay-Only peers only take up a very small fraction of that memory (<10kb)
  • CNode average memory is small in comparison with Peer on average - however, I’d expect hat there would be large spikes when we send / receive a large message that we haven’t processed yet - these likely wouldn’t be seen in this data.
  • CNode memory considerations are mostly independent on whether the connection is block-relay-only or not.

Does this make sense? Any important takeaways so far that I am missing?

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