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prysm-pulse/beacon-chain/core/state/benchmarks/README.md
Ivan Martinez 7754cfb6c6
Reduce amount of time for benchmark tests (#4166) 
* Change benchmarks to use different cache

* Fix bench tests and cache

* Add back sig check for test
2019-12-02 15:54:57 -05:00

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Benchmarks for Prysm State Transition

This package contains the functionality needed for benchmarking Prysms state transitions, this includes its block processing (with and without caching) and epoch processing functions. There is also a benchmark for HashTreeRoot on a large beacon state.

Benchmark Configuration

The following configs are in config.go:

  • ValidatorCount: Sets the amount of active validators to perform the benchmarks with. Default is 65536.
  • AttestationsPerEpoch: Sets the amount of attestations per epoch for the benchmarks to perform with, this affects the amount of attestations in a full block and the amount of attestations per epoch in the state for the ProcessEpoch and HashTreeRoot benchmark. Default is 128.

Generating new SSZ files

Due to the sheer size of the benchmarking configurations (65536 validators), the files used for benchmarking are pregenerated so there's no wasted computations on generating a genesis state with 65536 validators. This should only be needed if there is a breaking spec change and the tests fail from SSZ issues.

To generate new files to use for benchmarking, run the below command in the root of Prysm.

go run beacon-chain/core/state/benchmarks/benchmark_files/generate_bench_files.go

Bazel does not allow writing to the project directory, so running with go run is needed.

Current Results as of November 2019

BenchmarkExecuteStateTransition-4             	      20	33020593584 ns/op
BenchmarkExecuteStateTransition_WithCache-4   	      20	21272276477 ns/op
BenchmarkProcessEpoch_2FullEpochs-4           	       5	158161708836 ns/op
BenchmarkHashTreeRoot_FullState-4   	              50	1509721280 ns/op