research on merkle trees for ZKP revocation in Hyperledger Ursa
When you run cargo build --release, a binary named fillpart is created in target/release. Run this app to experiment with different sizes and fill ratios of a merkle tree from Ursa.
DON'T RUN THIS ON A DEBUG BUILD; it's about 10x-100x slower and not useful for comparison.
When you run cargo bench, you get analysis of the timing of various functions.