featurebase/roaring/benchpretty/main.go
2022-09-06 09:39:22 -07:00

116 lines
2.8 KiB
Go

// Copyright 2022 Molecula Corp. (DBA FeatureBase).
// SPDX-License-Identifier: Apache-2.0
package main
import (
"bufio"
"fmt"
"log"
"os"
"regexp"
"sort"
"strconv"
"strings"
"github.com/featurebasedb/featurebase/v3/roaring"
)
var pattern = regexp.MustCompile(`^BenchmarkCtOps/([^/]+)/([^/]+)/([^-]+)-([0-9]+)\s*([0-9]+)\s*([0-9.]+) ns/op`)
func parseFile(path string, benchmarks map[string]map[string]map[string]float64, known map[string]bool) error {
// unset all the seen flags in the known map. if we end up with any unseen, the
// benchmarks are incomplete.
for k := range known {
known[k] = false
}
file, err := os.Open(path)
if err != nil {
return err
}
scanner := bufio.NewScanner(file)
for scanner.Scan() {
line := scanner.Text()
if !strings.HasPrefix(line, "BenchmarkCtOps/") {
continue
}
matches := pattern.FindStringSubmatch(line)
if matches == nil {
return fmt.Errorf("can't parse line: '%s'", line)
}
t1, t2 := matches[1], matches[2]
if _, ok := known[t1]; !ok {
return fmt.Errorf("unknown archetype '%s'", t1)
}
if _, ok := known[t2]; !ok {
return fmt.Errorf("unknown archetype '%s'", t2)
}
known[t1] = true
known[t2] = true
op := matches[3]
time, err := strconv.ParseFloat(matches[6], 64)
if err != nil {
return fmt.Errorf("parsing float [%s]: %v", matches[6], err)
}
if benchmarks[op] == nil {
benchmarks[op] = make(map[string]map[string]float64, 16)
}
if benchmarks[op][t1] == nil {
benchmarks[op][t1] = make(map[string]float64, 16)
}
benchmarks[op][t1][t2] += time
}
for k, v := range known {
if !v {
fmt.Printf("warning: container archetype '%s' missing in benchmarks\n", k)
}
}
return nil
}
func main() {
maxLen := 0
knownArchetypes := make(map[string]bool, len(roaring.ContainerArchetypeNames))
for _, name := range roaring.ContainerArchetypeNames {
if len(name) > maxLen {
maxLen = len(name)
}
knownArchetypes[name] = false
}
benchmarks := make(map[string]map[string]map[string]float64, 8)
for _, file := range os.Args[1:] {
err := parseFile(file, benchmarks, knownArchetypes)
if err != nil {
log.Fatalf("parsing '%s': %v", file, err)
}
}
if len(benchmarks) < 1 {
log.Fatalf("no benchmarks parsed?")
}
ops := make([]string, 0, 8)
for k := range benchmarks {
ops = append(ops, k)
}
sort.Strings(ops)
for _, op := range ops {
fmt.Printf("%s:\n", op)
fmt.Printf("%*s ", maxLen, "")
for _, name := range roaring.ContainerArchetypeNames {
fmt.Printf(" %*s", maxLen, name)
}
fmt.Print("\n")
for _, self := range roaring.ContainerArchetypeNames {
fmt.Printf("%*s ", maxLen, self)
for _, other := range roaring.ContainerArchetypeNames {
time, ok := benchmarks[op][self][other]
if ok {
fmt.Printf(" %*.1f", maxLen, time)
} else {
fmt.Printf(" %*s", maxLen, "--")
}
}
fmt.Print("\n")
}
fmt.Print("\n")
}
}