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