mirror of https://github.com/prometheus/prometheus
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
627 lines
14 KiB
627 lines
14 KiB
// Copyright 2017 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"runtime"
|
|
"runtime/pprof"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"text/tabwriter"
|
|
"time"
|
|
|
|
"github.com/alecthomas/units"
|
|
"github.com/go-kit/log"
|
|
"github.com/pkg/errors"
|
|
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
"github.com/prometheus/prometheus/tsdb"
|
|
"github.com/prometheus/prometheus/tsdb/chunks"
|
|
tsdb_errors "github.com/prometheus/prometheus/tsdb/errors"
|
|
"github.com/prometheus/prometheus/tsdb/fileutil"
|
|
)
|
|
|
|
const timeDelta = 30000
|
|
|
|
type writeBenchmark struct {
|
|
outPath string
|
|
samplesFile string
|
|
cleanup bool
|
|
numMetrics int
|
|
|
|
storage *tsdb.DB
|
|
|
|
cpuprof *os.File
|
|
memprof *os.File
|
|
blockprof *os.File
|
|
mtxprof *os.File
|
|
logger log.Logger
|
|
}
|
|
|
|
func benchmarkWrite(outPath, samplesFile string, numMetrics, numScrapes int) error {
|
|
b := &writeBenchmark{
|
|
outPath: outPath,
|
|
samplesFile: samplesFile,
|
|
numMetrics: numMetrics,
|
|
logger: log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr)),
|
|
}
|
|
if b.outPath == "" {
|
|
dir, err := ioutil.TempDir("", "tsdb_bench")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
b.outPath = dir
|
|
b.cleanup = true
|
|
}
|
|
if err := os.RemoveAll(b.outPath); err != nil {
|
|
return err
|
|
}
|
|
if err := os.MkdirAll(b.outPath, 0777); err != nil {
|
|
return err
|
|
}
|
|
|
|
dir := filepath.Join(b.outPath, "storage")
|
|
|
|
l := log.With(b.logger, "ts", log.DefaultTimestampUTC, "caller", log.DefaultCaller)
|
|
|
|
st, err := tsdb.Open(dir, l, nil, &tsdb.Options{
|
|
RetentionDuration: int64(15 * 24 * time.Hour / time.Millisecond),
|
|
MinBlockDuration: int64(2 * time.Hour / time.Millisecond),
|
|
}, tsdb.NewDBStats())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
st.DisableCompactions()
|
|
b.storage = st
|
|
|
|
var lbs []labels.Labels
|
|
|
|
if _, err = measureTime("readData", func() error {
|
|
f, err := os.Open(b.samplesFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
|
|
lbs, err = readPrometheusLabels(f, b.numMetrics)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
|
|
var total uint64
|
|
|
|
dur, err := measureTime("ingestScrapes", func() error {
|
|
if err := b.startProfiling(); err != nil {
|
|
return err
|
|
}
|
|
total, err = b.ingestScrapes(lbs, numScrapes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
fmt.Println(" > total samples:", total)
|
|
fmt.Println(" > samples/sec:", float64(total)/dur.Seconds())
|
|
|
|
if _, err = measureTime("stopStorage", func() error {
|
|
if err := b.storage.Close(); err != nil {
|
|
return err
|
|
}
|
|
|
|
return b.stopProfiling()
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (b *writeBenchmark) ingestScrapes(lbls []labels.Labels, scrapeCount int) (uint64, error) {
|
|
var mu sync.Mutex
|
|
var total uint64
|
|
|
|
for i := 0; i < scrapeCount; i += 100 {
|
|
var wg sync.WaitGroup
|
|
lbls := lbls
|
|
for len(lbls) > 0 {
|
|
l := 1000
|
|
if len(lbls) < 1000 {
|
|
l = len(lbls)
|
|
}
|
|
batch := lbls[:l]
|
|
lbls = lbls[l:]
|
|
|
|
wg.Add(1)
|
|
go func() {
|
|
n, err := b.ingestScrapesShard(batch, 100, int64(timeDelta*i))
|
|
if err != nil {
|
|
// exitWithError(err)
|
|
fmt.Println(" err", err)
|
|
}
|
|
mu.Lock()
|
|
total += n
|
|
mu.Unlock()
|
|
wg.Done()
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|
|
fmt.Println("ingestion completed")
|
|
|
|
return total, nil
|
|
}
|
|
|
|
func (b *writeBenchmark) ingestScrapesShard(lbls []labels.Labels, scrapeCount int, baset int64) (uint64, error) {
|
|
ts := baset
|
|
|
|
type sample struct {
|
|
labels labels.Labels
|
|
value int64
|
|
ref *uint64
|
|
}
|
|
|
|
scrape := make([]*sample, 0, len(lbls))
|
|
|
|
for _, m := range lbls {
|
|
scrape = append(scrape, &sample{
|
|
labels: m,
|
|
value: 123456789,
|
|
})
|
|
}
|
|
total := uint64(0)
|
|
|
|
for i := 0; i < scrapeCount; i++ {
|
|
app := b.storage.Appender(context.TODO())
|
|
ts += timeDelta
|
|
|
|
for _, s := range scrape {
|
|
s.value += 1000
|
|
|
|
var ref uint64
|
|
if s.ref != nil {
|
|
ref = *s.ref
|
|
}
|
|
|
|
ref, err := app.Append(ref, s.labels, ts, float64(s.value))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
if s.ref == nil {
|
|
s.ref = &ref
|
|
}
|
|
total++
|
|
}
|
|
if err := app.Commit(); err != nil {
|
|
return total, err
|
|
}
|
|
}
|
|
return total, nil
|
|
}
|
|
|
|
func (b *writeBenchmark) startProfiling() error {
|
|
var err error
|
|
|
|
// Start CPU profiling.
|
|
b.cpuprof, err = os.Create(filepath.Join(b.outPath, "cpu.prof"))
|
|
if err != nil {
|
|
return fmt.Errorf("bench: could not create cpu profile: %v", err)
|
|
}
|
|
if err := pprof.StartCPUProfile(b.cpuprof); err != nil {
|
|
return fmt.Errorf("bench: could not start CPU profile: %v", err)
|
|
}
|
|
|
|
// Start memory profiling.
|
|
b.memprof, err = os.Create(filepath.Join(b.outPath, "mem.prof"))
|
|
if err != nil {
|
|
return fmt.Errorf("bench: could not create memory profile: %v", err)
|
|
}
|
|
runtime.MemProfileRate = 64 * 1024
|
|
|
|
// Start fatal profiling.
|
|
b.blockprof, err = os.Create(filepath.Join(b.outPath, "block.prof"))
|
|
if err != nil {
|
|
return fmt.Errorf("bench: could not create block profile: %v", err)
|
|
}
|
|
runtime.SetBlockProfileRate(20)
|
|
|
|
b.mtxprof, err = os.Create(filepath.Join(b.outPath, "mutex.prof"))
|
|
if err != nil {
|
|
return fmt.Errorf("bench: could not create mutex profile: %v", err)
|
|
}
|
|
runtime.SetMutexProfileFraction(20)
|
|
return nil
|
|
}
|
|
|
|
func (b *writeBenchmark) stopProfiling() error {
|
|
if b.cpuprof != nil {
|
|
pprof.StopCPUProfile()
|
|
b.cpuprof.Close()
|
|
b.cpuprof = nil
|
|
}
|
|
if b.memprof != nil {
|
|
if err := pprof.Lookup("heap").WriteTo(b.memprof, 0); err != nil {
|
|
return fmt.Errorf("error writing mem profile: %v", err)
|
|
}
|
|
b.memprof.Close()
|
|
b.memprof = nil
|
|
}
|
|
if b.blockprof != nil {
|
|
if err := pprof.Lookup("block").WriteTo(b.blockprof, 0); err != nil {
|
|
return fmt.Errorf("error writing block profile: %v", err)
|
|
}
|
|
b.blockprof.Close()
|
|
b.blockprof = nil
|
|
runtime.SetBlockProfileRate(0)
|
|
}
|
|
if b.mtxprof != nil {
|
|
if err := pprof.Lookup("mutex").WriteTo(b.mtxprof, 0); err != nil {
|
|
return fmt.Errorf("error writing mutex profile: %v", err)
|
|
}
|
|
b.mtxprof.Close()
|
|
b.mtxprof = nil
|
|
runtime.SetMutexProfileFraction(0)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func measureTime(stage string, f func() error) (time.Duration, error) {
|
|
fmt.Printf(">> start stage=%s\n", stage)
|
|
start := time.Now()
|
|
if err := f(); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
fmt.Printf(">> completed stage=%s duration=%s\n", stage, time.Since(start))
|
|
return time.Since(start), nil
|
|
}
|
|
|
|
func readPrometheusLabels(r io.Reader, n int) ([]labels.Labels, error) {
|
|
scanner := bufio.NewScanner(r)
|
|
|
|
var mets []labels.Labels
|
|
hashes := map[uint64]struct{}{}
|
|
i := 0
|
|
|
|
for scanner.Scan() && i < n {
|
|
m := make(labels.Labels, 0, 10)
|
|
|
|
r := strings.NewReplacer("\"", "", "{", "", "}", "")
|
|
s := r.Replace(scanner.Text())
|
|
|
|
labelChunks := strings.Split(s, ",")
|
|
for _, labelChunk := range labelChunks {
|
|
split := strings.Split(labelChunk, ":")
|
|
m = append(m, labels.Label{Name: split[0], Value: split[1]})
|
|
}
|
|
// Order of the k/v labels matters, don't assume we'll always receive them already sorted.
|
|
sort.Sort(m)
|
|
h := m.Hash()
|
|
if _, ok := hashes[h]; ok {
|
|
continue
|
|
}
|
|
mets = append(mets, m)
|
|
hashes[h] = struct{}{}
|
|
i++
|
|
}
|
|
return mets, nil
|
|
}
|
|
|
|
func listBlocks(path string, humanReadable bool) error {
|
|
db, err := tsdb.OpenDBReadOnly(path, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() {
|
|
err = tsdb_errors.NewMulti(err, db.Close()).Err()
|
|
}()
|
|
blocks, err := db.Blocks()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
printBlocks(blocks, true, humanReadable)
|
|
return nil
|
|
}
|
|
|
|
func printBlocks(blocks []tsdb.BlockReader, writeHeader, humanReadable bool) {
|
|
tw := tabwriter.NewWriter(os.Stdout, 13, 0, 2, ' ', 0)
|
|
defer tw.Flush()
|
|
|
|
if writeHeader {
|
|
fmt.Fprintln(tw, "BLOCK ULID\tMIN TIME\tMAX TIME\tDURATION\tNUM SAMPLES\tNUM CHUNKS\tNUM SERIES\tSIZE")
|
|
}
|
|
|
|
for _, b := range blocks {
|
|
meta := b.Meta()
|
|
|
|
fmt.Fprintf(tw,
|
|
"%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
|
|
meta.ULID,
|
|
getFormatedTime(meta.MinTime, humanReadable),
|
|
getFormatedTime(meta.MaxTime, humanReadable),
|
|
time.Duration(meta.MaxTime-meta.MinTime)*time.Millisecond,
|
|
meta.Stats.NumSamples,
|
|
meta.Stats.NumChunks,
|
|
meta.Stats.NumSeries,
|
|
getFormatedBytes(b.Size(), humanReadable),
|
|
)
|
|
}
|
|
}
|
|
|
|
func getFormatedTime(timestamp int64, humanReadable bool) string {
|
|
if humanReadable {
|
|
return time.Unix(timestamp/1000, 0).UTC().String()
|
|
}
|
|
return strconv.FormatInt(timestamp, 10)
|
|
}
|
|
|
|
func getFormatedBytes(bytes int64, humanReadable bool) string {
|
|
if humanReadable {
|
|
return units.Base2Bytes(bytes).String()
|
|
}
|
|
return strconv.FormatInt(bytes, 10)
|
|
}
|
|
|
|
func openBlock(path, blockID string) (*tsdb.DBReadOnly, tsdb.BlockReader, error) {
|
|
db, err := tsdb.OpenDBReadOnly(path, nil)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
blocks, err := db.Blocks()
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
var block tsdb.BlockReader
|
|
if blockID != "" {
|
|
for _, b := range blocks {
|
|
if b.Meta().ULID.String() == blockID {
|
|
block = b
|
|
break
|
|
}
|
|
}
|
|
} else if len(blocks) > 0 {
|
|
block = blocks[len(blocks)-1]
|
|
}
|
|
if block == nil {
|
|
return nil, nil, fmt.Errorf("block %s not found", blockID)
|
|
}
|
|
return db, block, nil
|
|
}
|
|
|
|
func analyzeBlock(path, blockID string, limit int) error {
|
|
db, block, err := openBlock(path, blockID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() {
|
|
err = tsdb_errors.NewMulti(err, db.Close()).Err()
|
|
}()
|
|
|
|
meta := block.Meta()
|
|
fmt.Printf("Block ID: %s\n", meta.ULID)
|
|
// Presume 1ms resolution that Prometheus uses.
|
|
fmt.Printf("Duration: %s\n", (time.Duration(meta.MaxTime-meta.MinTime) * 1e6).String())
|
|
fmt.Printf("Series: %d\n", meta.Stats.NumSeries)
|
|
ir, err := block.Index()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer ir.Close()
|
|
|
|
allLabelNames, err := ir.LabelNames()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fmt.Printf("Label names: %d\n", len(allLabelNames))
|
|
|
|
type postingInfo struct {
|
|
key string
|
|
metric uint64
|
|
}
|
|
postingInfos := []postingInfo{}
|
|
|
|
printInfo := func(postingInfos []postingInfo) {
|
|
sort.Slice(postingInfos, func(i, j int) bool { return postingInfos[i].metric > postingInfos[j].metric })
|
|
|
|
for i, pc := range postingInfos {
|
|
if i >= limit {
|
|
break
|
|
}
|
|
fmt.Printf("%d %s\n", pc.metric, pc.key)
|
|
}
|
|
}
|
|
|
|
labelsUncovered := map[string]uint64{}
|
|
labelpairsUncovered := map[string]uint64{}
|
|
labelpairsCount := map[string]uint64{}
|
|
entries := 0
|
|
p, err := ir.Postings("", "") // The special all key.
|
|
if err != nil {
|
|
return err
|
|
}
|
|
lbls := labels.Labels{}
|
|
chks := []chunks.Meta{}
|
|
for p.Next() {
|
|
if err = ir.Series(p.At(), &lbls, &chks); err != nil {
|
|
return err
|
|
}
|
|
// Amount of the block time range not covered by this series.
|
|
uncovered := uint64(meta.MaxTime-meta.MinTime) - uint64(chks[len(chks)-1].MaxTime-chks[0].MinTime)
|
|
for _, lbl := range lbls {
|
|
key := lbl.Name + "=" + lbl.Value
|
|
labelsUncovered[lbl.Name] += uncovered
|
|
labelpairsUncovered[key] += uncovered
|
|
labelpairsCount[key]++
|
|
entries++
|
|
}
|
|
}
|
|
if p.Err() != nil {
|
|
return p.Err()
|
|
}
|
|
fmt.Printf("Postings (unique label pairs): %d\n", len(labelpairsUncovered))
|
|
fmt.Printf("Postings entries (total label pairs): %d\n", entries)
|
|
|
|
postingInfos = postingInfos[:0]
|
|
for k, m := range labelpairsUncovered {
|
|
postingInfos = append(postingInfos, postingInfo{k, uint64(float64(m) / float64(meta.MaxTime-meta.MinTime))})
|
|
}
|
|
|
|
fmt.Printf("\nLabel pairs most involved in churning:\n")
|
|
printInfo(postingInfos)
|
|
|
|
postingInfos = postingInfos[:0]
|
|
for k, m := range labelsUncovered {
|
|
postingInfos = append(postingInfos, postingInfo{k, uint64(float64(m) / float64(meta.MaxTime-meta.MinTime))})
|
|
}
|
|
|
|
fmt.Printf("\nLabel names most involved in churning:\n")
|
|
printInfo(postingInfos)
|
|
|
|
postingInfos = postingInfos[:0]
|
|
for k, m := range labelpairsCount {
|
|
postingInfos = append(postingInfos, postingInfo{k, m})
|
|
}
|
|
|
|
fmt.Printf("\nMost common label pairs:\n")
|
|
printInfo(postingInfos)
|
|
|
|
postingInfos = postingInfos[:0]
|
|
for _, n := range allLabelNames {
|
|
values, err := ir.SortedLabelValues(n)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var cumulativeLength uint64
|
|
for _, str := range values {
|
|
cumulativeLength += uint64(len(str))
|
|
}
|
|
postingInfos = append(postingInfos, postingInfo{n, cumulativeLength})
|
|
}
|
|
|
|
fmt.Printf("\nLabel names with highest cumulative label value length:\n")
|
|
printInfo(postingInfos)
|
|
|
|
postingInfos = postingInfos[:0]
|
|
for _, n := range allLabelNames {
|
|
lv, err := ir.SortedLabelValues(n)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
postingInfos = append(postingInfos, postingInfo{n, uint64(len(lv))})
|
|
}
|
|
fmt.Printf("\nHighest cardinality labels:\n")
|
|
printInfo(postingInfos)
|
|
|
|
postingInfos = postingInfos[:0]
|
|
lv, err := ir.SortedLabelValues("__name__")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, n := range lv {
|
|
postings, err := ir.Postings("__name__", n)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
count := 0
|
|
for postings.Next() {
|
|
count++
|
|
}
|
|
if postings.Err() != nil {
|
|
return postings.Err()
|
|
}
|
|
postingInfos = append(postingInfos, postingInfo{n, uint64(count)})
|
|
}
|
|
fmt.Printf("\nHighest cardinality metric names:\n")
|
|
printInfo(postingInfos)
|
|
return nil
|
|
}
|
|
|
|
func dumpSamples(path string, mint, maxt int64) (err error) {
|
|
db, err := tsdb.OpenDBReadOnly(path, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() {
|
|
err = tsdb_errors.NewMulti(err, db.Close()).Err()
|
|
}()
|
|
q, err := db.Querier(context.TODO(), mint, maxt)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer q.Close()
|
|
|
|
ss := q.Select(false, nil, labels.MustNewMatcher(labels.MatchRegexp, "", ".*"))
|
|
|
|
for ss.Next() {
|
|
series := ss.At()
|
|
lbs := series.Labels()
|
|
it := series.Iterator()
|
|
for it.Next() {
|
|
ts, val := it.At()
|
|
fmt.Printf("%s %g %d\n", lbs, val, ts)
|
|
}
|
|
if it.Err() != nil {
|
|
return ss.Err()
|
|
}
|
|
}
|
|
|
|
if ws := ss.Warnings(); len(ws) > 0 {
|
|
return tsdb_errors.NewMulti(ws...).Err()
|
|
}
|
|
|
|
if ss.Err() != nil {
|
|
return ss.Err()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func checkErr(err error) int {
|
|
if err != nil {
|
|
fmt.Fprintln(os.Stderr, err)
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func backfillOpenMetrics(path string, outputDir string, humanReadable, quiet bool, maxBlockDuration time.Duration) int {
|
|
inputFile, err := fileutil.OpenMmapFile(path)
|
|
if err != nil {
|
|
return checkErr(err)
|
|
}
|
|
defer inputFile.Close()
|
|
|
|
if err := os.MkdirAll(outputDir, 0777); err != nil {
|
|
return checkErr(errors.Wrap(err, "create output dir"))
|
|
}
|
|
|
|
return checkErr(backfill(5000, inputFile.Bytes(), outputDir, humanReadable, quiet, maxBlockDuration))
|
|
}
|