tendermint/lite/performance_test.go
Dev Ojha dae7dc30e0 Switch usage of math/rand to cmn's rand (#1980)
This commit switches all usage of math/rand to cmn's rand. The only
exceptions are within the random file itself, the tools package, and the
crypto package. In tools you don't want it to lock between the go-routines.
The crypto package doesn't use it so the crypto package have no other
dependencies within tendermint/tendermint for easier portability.

Crypto/rand usage is unadjusted.

Closes #1343
2018-07-16 11:20:37 +04:00

369 lines
11 KiB
Go

package lite
import (
"fmt"
"sync"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
cmn "github.com/tendermint/tendermint/libs/common"
liteErr "github.com/tendermint/tendermint/lite/errors"
)
func TestMemStoreProvidergetByHeightBinaryAndLinearSameResult(t *testing.T) {
p := NewMemStoreProvider().(*memStoreProvider)
// Store a bunch of commits at specific heights
// and then ensure that:
// * getByHeightLinearSearch
// * getByHeightBinarySearch
// both return the exact same result
// 1. Non-existent height commits
nonExistent := []int64{-1000, -1, 0, 1, 10, 11, 17, 31, 67, 1000, 1e9}
ensureNonExistentCommitsAtHeight(t, "getByHeightLinearSearch", p.getByHeightLinearSearch, nonExistent)
ensureNonExistentCommitsAtHeight(t, "getByHeightBinarySearch", p.getByHeightBinarySearch, nonExistent)
// 2. Save some known height commits
knownHeights := []int64{0, 1, 7, 9, 12, 13, 18, 44, 23, 16, 1024, 100, 199, 1e9}
createAndStoreCommits(t, p, knownHeights)
// 3. Now check if those heights are retrieved
ensureExistentCommitsAtHeight(t, "getByHeightLinearSearch", p.getByHeightLinearSearch, knownHeights)
ensureExistentCommitsAtHeight(t, "getByHeightBinarySearch", p.getByHeightBinarySearch, knownHeights)
// 4. And now for the height probing to ensure that any height
// requested returns a fullCommit of height <= requestedHeight.
comparegetByHeightAlgorithms(t, p, 0, 0)
comparegetByHeightAlgorithms(t, p, 1, 1)
comparegetByHeightAlgorithms(t, p, 2, 1)
comparegetByHeightAlgorithms(t, p, 5, 1)
comparegetByHeightAlgorithms(t, p, 7, 7)
comparegetByHeightAlgorithms(t, p, 10, 9)
comparegetByHeightAlgorithms(t, p, 12, 12)
comparegetByHeightAlgorithms(t, p, 14, 13)
comparegetByHeightAlgorithms(t, p, 19, 18)
comparegetByHeightAlgorithms(t, p, 43, 23)
comparegetByHeightAlgorithms(t, p, 45, 44)
comparegetByHeightAlgorithms(t, p, 1025, 1024)
comparegetByHeightAlgorithms(t, p, 101, 100)
comparegetByHeightAlgorithms(t, p, 1e3, 199)
comparegetByHeightAlgorithms(t, p, 1e4, 1024)
comparegetByHeightAlgorithms(t, p, 1e9, 1e9)
comparegetByHeightAlgorithms(t, p, 1e9+1, 1e9)
}
func createAndStoreCommits(t *testing.T, p Provider, heights []int64) {
chainID := "cache-best-height-binary-and-linear"
appHash := []byte("0xdeadbeef")
keys := GenValKeys(len(heights) / 2)
for _, h := range heights {
vals := keys.ToValidators(10, int64(len(heights)/2))
fc := keys.GenFullCommit(chainID, h, nil, vals, appHash, []byte("params"), []byte("results"), 0, 5)
err := p.StoreCommit(fc)
require.NoError(t, err, "StoreCommit height=%d", h)
}
}
func comparegetByHeightAlgorithms(t *testing.T, p *memStoreProvider, ask, expect int64) {
algos := map[string]func(int64) (FullCommit, error){
"getHeightByLinearSearch": p.getByHeightLinearSearch,
"getHeightByBinarySearch": p.getByHeightBinarySearch,
}
for algo, fn := range algos {
fc, err := fn(ask)
// t.Logf("%s got=%v want=%d", algo, expect, fc.Height())
require.Nil(t, err, "%s: %+v", algo, err)
if assert.Equal(t, expect, fc.Height()) {
err = p.StoreCommit(fc)
require.Nil(t, err, "%s: %+v", algo, err)
}
}
}
var blankFullCommit FullCommit
func ensureNonExistentCommitsAtHeight(t *testing.T, prefix string, fn func(int64) (FullCommit, error), data []int64) {
for i, qh := range data {
fc, err := fn(qh)
assert.NotNil(t, err, "#%d: %s: height=%d should return non-nil error", i, prefix, qh)
assert.Equal(t, fc, blankFullCommit, "#%d: %s: height=%d\ngot =%+v\nwant=%+v", i, prefix, qh, fc, blankFullCommit)
}
}
func ensureExistentCommitsAtHeight(t *testing.T, prefix string, fn func(int64) (FullCommit, error), data []int64) {
for i, qh := range data {
fc, err := fn(qh)
assert.Nil(t, err, "#%d: %s: height=%d should not return an error: %v", i, prefix, qh, err)
assert.NotEqual(t, fc, blankFullCommit, "#%d: %s: height=%d got a blankCommit", i, prefix, qh)
}
}
func BenchmarkGenCommit20(b *testing.B) {
keys := GenValKeys(20)
benchmarkGenCommit(b, keys)
}
func BenchmarkGenCommit100(b *testing.B) {
keys := GenValKeys(100)
benchmarkGenCommit(b, keys)
}
func BenchmarkGenCommitSec20(b *testing.B) {
keys := GenSecpValKeys(20)
benchmarkGenCommit(b, keys)
}
func BenchmarkGenCommitSec100(b *testing.B) {
keys := GenSecpValKeys(100)
benchmarkGenCommit(b, keys)
}
func benchmarkGenCommit(b *testing.B, keys ValKeys) {
chainID := fmt.Sprintf("bench-%d", len(keys))
vals := keys.ToValidators(20, 10)
for i := 0; i < b.N; i++ {
h := int64(1 + i)
appHash := []byte(fmt.Sprintf("h=%d", h))
resHash := []byte(fmt.Sprintf("res=%d", h))
keys.GenCommit(chainID, h, nil, vals, appHash, []byte("params"), resHash, 0, len(keys))
}
}
// this benchmarks generating one key
func BenchmarkGenValKeys(b *testing.B) {
keys := GenValKeys(20)
for i := 0; i < b.N; i++ {
keys = keys.Extend(1)
}
}
// this benchmarks generating one key
func BenchmarkGenSecpValKeys(b *testing.B) {
keys := GenSecpValKeys(20)
for i := 0; i < b.N; i++ {
keys = keys.Extend(1)
}
}
func BenchmarkToValidators20(b *testing.B) {
benchmarkToValidators(b, 20)
}
func BenchmarkToValidators100(b *testing.B) {
benchmarkToValidators(b, 100)
}
// this benchmarks constructing the validator set (.PubKey() * nodes)
func benchmarkToValidators(b *testing.B, nodes int) {
keys := GenValKeys(nodes)
for i := 1; i <= b.N; i++ {
keys.ToValidators(int64(2*i), int64(i))
}
}
func BenchmarkToValidatorsSec100(b *testing.B) {
benchmarkToValidatorsSec(b, 100)
}
// this benchmarks constructing the validator set (.PubKey() * nodes)
func benchmarkToValidatorsSec(b *testing.B, nodes int) {
keys := GenSecpValKeys(nodes)
for i := 1; i <= b.N; i++ {
keys.ToValidators(int64(2*i), int64(i))
}
}
func BenchmarkCertifyCommit20(b *testing.B) {
keys := GenValKeys(20)
benchmarkCertifyCommit(b, keys)
}
func BenchmarkCertifyCommit100(b *testing.B) {
keys := GenValKeys(100)
benchmarkCertifyCommit(b, keys)
}
func BenchmarkCertifyCommitSec20(b *testing.B) {
keys := GenSecpValKeys(20)
benchmarkCertifyCommit(b, keys)
}
func BenchmarkCertifyCommitSec100(b *testing.B) {
keys := GenSecpValKeys(100)
benchmarkCertifyCommit(b, keys)
}
func benchmarkCertifyCommit(b *testing.B, keys ValKeys) {
chainID := "bench-certify"
vals := keys.ToValidators(20, 10)
cert := NewStaticCertifier(chainID, vals)
check := keys.GenCommit(chainID, 123, nil, vals, []byte("foo"), []byte("params"), []byte("res"), 0, len(keys))
for i := 0; i < b.N; i++ {
err := cert.Certify(check)
if err != nil {
panic(err)
}
}
}
type algo bool
const (
linearSearch = true
binarySearch = false
)
// Lazy load the commits
var fcs5, fcs50, fcs100, fcs500, fcs1000 []FullCommit
var h5, h50, h100, h500, h1000 []int64
var commitsOnce sync.Once
func lazyGenerateFullCommits(b *testing.B) {
b.Logf("Generating FullCommits")
commitsOnce.Do(func() {
fcs5, h5 = genFullCommits(nil, nil, 5)
b.Logf("Generated 5 FullCommits")
fcs50, h50 = genFullCommits(fcs5, h5, 50)
b.Logf("Generated 50 FullCommits")
fcs100, h100 = genFullCommits(fcs50, h50, 100)
b.Logf("Generated 100 FullCommits")
fcs500, h500 = genFullCommits(fcs100, h100, 500)
b.Logf("Generated 500 FullCommits")
fcs1000, h1000 = genFullCommits(fcs500, h500, 1000)
b.Logf("Generated 1000 FullCommits")
})
}
func BenchmarkMemStoreProviderGetByHeightLinearSearch5(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs5, h5, linearSearch)
}
func BenchmarkMemStoreProviderGetByHeightLinearSearch50(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs50, h50, linearSearch)
}
func BenchmarkMemStoreProviderGetByHeightLinearSearch100(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs100, h100, linearSearch)
}
func BenchmarkMemStoreProviderGetByHeightLinearSearch500(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs500, h500, linearSearch)
}
func BenchmarkMemStoreProviderGetByHeightLinearSearch1000(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs1000, h1000, linearSearch)
}
func BenchmarkMemStoreProviderGetByHeightBinarySearch5(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs5, h5, binarySearch)
}
func BenchmarkMemStoreProviderGetByHeightBinarySearch50(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs50, h50, binarySearch)
}
func BenchmarkMemStoreProviderGetByHeightBinarySearch100(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs100, h100, binarySearch)
}
func BenchmarkMemStoreProviderGetByHeightBinarySearch500(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs500, h500, binarySearch)
}
func BenchmarkMemStoreProviderGetByHeightBinarySearch1000(b *testing.B) {
benchmarkMemStoreProvidergetByHeight(b, fcs1000, h1000, binarySearch)
}
var rng = cmn.NewRand()
func init() {
rng.Seed(10)
}
func benchmarkMemStoreProvidergetByHeight(b *testing.B, fcs []FullCommit, fHeights []int64, algo algo) {
lazyGenerateFullCommits(b)
b.StopTimer()
mp := NewMemStoreProvider()
for i, fc := range fcs {
if err := mp.StoreCommit(fc); err != nil {
b.Fatalf("FullCommit #%d: err: %v", i, err)
}
}
qHeights := make([]int64, len(fHeights))
copy(qHeights, fHeights)
// Append some non-existent heights to trigger the worst cases.
qHeights = append(qHeights, 19, -100, -10000, 1e7, -17, 31, -1e9)
memP := mp.(*memStoreProvider)
searchFn := memP.getByHeightLinearSearch
if algo == binarySearch { // nolint
searchFn = memP.getByHeightBinarySearch
}
hPerm := rng.Perm(len(qHeights))
b.StartTimer()
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, j := range hPerm {
h := qHeights[j]
if _, err := searchFn(h); err != nil {
}
}
}
b.ReportAllocs()
}
func genFullCommits(prevFC []FullCommit, prevH []int64, want int) ([]FullCommit, []int64) {
fcs := make([]FullCommit, len(prevFC))
copy(fcs, prevFC)
heights := make([]int64, len(prevH))
copy(heights, prevH)
appHash := []byte("benchmarks")
chainID := "benchmarks-gen-full-commits"
n := want
keys := GenValKeys(2 + (n / 3))
for i := 0; i < n; i++ {
vals := keys.ToValidators(10, int64(n/2))
h := int64(20 + 10*i)
fcs = append(fcs, keys.GenFullCommit(chainID, h, nil, vals, appHash, []byte("params"), []byte("results"), 0, 5))
heights = append(heights, h)
}
return fcs, heights
}
func TestMemStoreProviderLatestCommitAlwaysUsesSorted(t *testing.T) {
p := NewMemStoreProvider().(*memStoreProvider)
// 1. With no commits yet stored, it should return ErrCommitNotFound
got, err := p.LatestCommit()
require.Equal(t, err.Error(), liteErr.ErrCommitNotFound().Error(), "should return ErrCommitNotFound()")
require.Equal(t, got, blankFullCommit, "With no fullcommits, it should return a blank FullCommit")
// 2. Generate some full commits now and we'll add them unsorted.
genAndStoreCommitsOfHeight(t, p, 27, 100, 1, 12, 1000, 17, 91)
fc, err := p.LatestCommit()
require.Nil(t, err, "with commits saved no error expected")
require.NotEqual(t, fc, blankFullCommit, "with commits saved no blank FullCommit")
require.Equal(t, fc.Height(), int64(1000), "the latest commit i.e. the largest expected")
}
func genAndStoreCommitsOfHeight(t *testing.T, p Provider, heights ...int64) {
n := len(heights)
appHash := []byte("tests")
chainID := "tests-gen-full-commits"
keys := GenValKeys(2 + (n / 3))
for i := 0; i < n; i++ {
h := heights[i]
vals := keys.ToValidators(10, int64(n/2))
fc := keys.GenFullCommit(chainID, h, nil, vals, appHash, []byte("params"), []byte("results"), 0, 5)
err := p.StoreCommit(fc)
require.NoError(t, err, "StoreCommit height=%d", h)
}
}