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Benchmarking
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============
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Bitcoin Core has an internal benchmarking framework, with benchmarks
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for cryptographic algorithms (e.g. SHA1, SHA256, SHA512, RIPEMD160, Poly1305, ChaCha20), rolling bloom filter, coins selection,
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thread queue, wallet balance.
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Running
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---------------------
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For benchmarking, you only need to compile `bench_bitcoin`. The bench runner
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warns if you configure with `-DCMAKE_BUILD_TYPE=Debug`, but consider if building without
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it will impact the benchmark(s) you are interested in by unlatching log printers
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and lock analysis.
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cmake -B build -DBUILD_BENCH=ON
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cmake --build build -t bench_bitcoin
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After compiling bitcoin-core, the benchmarks can be run with:
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build/src/bench/bench_bitcoin
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The output will look similar to:
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```
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| ns/op | op/s | err% | total | benchmark
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|--------------------:|--------------------:|--------:|----------:|:----------
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| 57,927,463.00 | 17.26 | 3.6% | 0.66 | `AddrManAdd`
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| 677,816.00 | 1,475.33 | 4.9% | 0.01 | `AddrManGetAddr`
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...
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| ns/byte | byte/s | err% | total | benchmark
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|--------------------:|--------------------:|--------:|----------:|:----------
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| 127.32 | 7,854,302.69 | 0.3% | 0.00 | `Base58CheckEncode`
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| 31.95 | 31,303,226.99 | 0.2% | 0.00 | `Base58Decode`
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...
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```
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Help
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---------------------
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build/src/bench/bench_bitcoin -?
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To print the various options, like listing the benchmarks without running them
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or using a regex filter to only run certain benchmarks.
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Notes
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---------------------
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More benchmarks are needed for, in no particular order:
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- Script Validation
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- Coins database
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- Memory pool
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- Cuckoo Cache
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- P2P throughput
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Going Further
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--------------------
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To monitor Bitcoin Core performance more in depth (like reindex or IBD): https://github.com/chaincodelabs/bitcoinperf
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To generate Flame Graphs for Bitcoin Core: https://github.com/eklitzke/bitcoin/blob/flamegraphs/doc/flamegraphs.md
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