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https://gitlab.com/pulsechaincom/prysm-pulse.git
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485fc538c3
* Initial version of scatter * Add mutex for scatter batch * Provide mutex to worker processes * Embed mputil * Add notes on scatter * Tidy-up * Add mutex test * Simplify scatter for users * Tidy-ups/code coverage * Gazelle update * Add benchmark * Mutex to RWMutex * Add test against internal functions * Bazel fixes * Fix benchmark * Benchmark values to constants * Update shared/mputil/scatter.go Co-Authored-By: Raul Jordan <raul@prysmaticlabs.com> * Update shared/mputil/scatter.go Co-Authored-By: Raul Jordan <raul@prysmaticlabs.com> * Moved struct to top of file * Add featureconfig for scatter * Gate scatter behind feature flag * Lint fixes * fmt
58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package mputil_test
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import (
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"crypto/rand"
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"crypto/sha256"
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"sync"
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"testing"
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"github.com/prysmaticlabs/prysm/shared/mputil"
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)
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var input [][]byte
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const (
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benchmarkElements = 65536
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benchmarkElementSize = 32
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benchmarkHashRuns = 128
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)
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func init() {
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input = make([][]byte, benchmarkElements)
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for i := 0; i < benchmarkElements; i++ {
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input[i] = make([]byte, benchmarkElementSize)
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rand.Read(input[i])
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}
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}
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// hash repeatedly hashes the data passed to it
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func hash(input [][]byte) [][]byte {
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output := make([][]byte, len(input))
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for i := range input {
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copy(output, input)
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for j := 0; j < benchmarkHashRuns; j++ {
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hash := sha256.Sum256(output[i])
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output[i] = hash[:]
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}
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}
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return output
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}
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func BenchmarkHash(b *testing.B) {
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for i := 0; i < b.N; i++ {
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hash(input)
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}
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}
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func BenchmarkHashMP(b *testing.B) {
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output := make([][]byte, len(input))
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for i := 0; i < b.N; i++ {
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workerResults, _ := mputil.Scatter(len(input), func(offset int, entries int, _ *sync.RWMutex) (interface{}, error) {
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return hash(input[offset : offset+entries]), nil
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})
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for _, result := range workerResults {
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copy(output[result.Offset:], result.Extent.([][]byte))
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}
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}
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}
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