6d0ea4cf5b doc: add release notes (Andrew Toth)
a2b1c86903 txospenderindex: disable bloom filters to optimize disk usage (Andrew Toth)
Pull request description:
LevelDB bloom filters are only consulted on `Get` point reads. This can be verified in https://github.com/bitcoin/bitcoin/blob/master/src/leveldb/table/table.cc#L224-L228. `InternalGet` is the only place that consults the filter, and it is only reached via a `Get` or `Exists` point read. The filters are never consulted for iterator seeks with an iterator created via `NewIterator`.
txospenderindex only reads via iterator seeks, so building them is wasted effort and space.
For a db as large as txospenderindex, this results in measurable performance and disk usage.
On master, a full sync took 4h37m, and the resulting db was 85.0 GiB.
On this branch, a full sync took 3h57m, and the resulting db was 80.9 GiB.
So this is a sync speedup of 39 minutes (1.17x), and a disk space reduction of 4.2 GiB.
ACKs for top commit:
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fjahr:
Code review ACK 6d0ea4cf5b
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