func generateRandomString(n int) string {
var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
b := make([]rune, n)
for i := range b {
b[i] = letters[rand.Intn(len(letters))]
}
return string(b)
}
func generateRandomPairs(numItems int, length int) []struct{ key, value string } {
pairs := make([]struct{ key, value string }, numItems)
for i := 0; i < numItems; i++ {
pairs[i] = struct{ key, value string }{
key: fmt.Sprintf("%d%s", rand.Intn(1000000), generateRandomString(length)),
value: fmt.Sprintf("%d%s", rand.Intn(1000000), generateRandomString(length)),
}
}
return pairs
}
func main() {
var dbPath = "k4"
defer os.RemoveAll(dbPath)
pairs := generateRandomPairs(300000, 128)
db, err := k4.Open(dbPath, (1024*1024)*64, 3600, false, false)
if err != nil {
log.Fatal(err)
}
defer db.Close()
// Benchmark Write
start := time.Now()
for _, pair := range pairs {
err = db.Put([]byte(pair.key), []byte(pair.value), nil)
if err != nil {
log.Fatal(err)
}
}
fmt.Printf("K4 Write benchmark: %v\n", time.Since(start))
// Benchmark Get
start = time.Now()
for _, pair := range pairs {
_, err := db.Get([]byte(pair.key))
if err != nil {
log.Fatal(err)
}
}
fmt.Printf("K4 Get benchmark: %v\n", time.Since(start))
}
panic: runtime error: integer divide by zero
goroutine 1 [running]:
github.com/guycipher/k4/v2/cuckoofilter.(*CuckooFilter).getHashIndices(...)
/Projects/golang/pkg/mod/github.com/guycipher/k4/v2@v2.1.8/cuckoofilter/cuckoofilter.go:67
github.com/guycipher/k4/v2/cuckoofilter.(*CuckooFilter).Lookup(0x140001261a0, {0x14000322120?, 0x526000?, 0x0?})
/Projects/golang/pkg/mod/github.com/guycipher/k4/v2@v2.1.8/cuckoofilter/cuckoofilter.go:135 +0x134
github.com/guycipher/k4/v2.(*SSTable).get(0x14000214030, {0x14000322120, 0x85, 0x85}, 0x14000079d58?)
/Projects/golang/pkg/mod/github.com/guycipher/k4/v2@v2.1.8/k4.go:1451 +0xf0
github.com/guycipher/k4/v2.(*K4).Get(0x14000146120, {0x14000322120, 0x85, 0x85})
/Projects/golang/pkg/mod/github.com/guycipher/k4/v2@v2.1.8/k4.go:1399 +0x33c
main.BenchK4()
/Projects/oss/bench/main.go:259 +0x258
main.main()
/Projects/oss/bench/main.go:288 +0x110
version: v2.1.8
env: Darwin MBP14.local 24.2.0 Darwin Kernel Version 24.2.0: Fri Dec 6 19:01:59 PST 2024; root:xnu-11215.61.5~2/RELEASE_ARM64_T6000 arm64
code (from https://github.com/starskey-io/bench):
panic: