package main
import (
+ "bufio"
+ "context"
"crypto/rand"
"encoding/binary"
"flag"
"io"
"io/ioutil"
"log"
+ mathRand "math/rand"
"net/http"
"os"
+ "os/signal"
+ "strings"
+ "sync/atomic"
+ "syscall"
"time"
- "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
- "git.curoverse.com/arvados.git/sdk/go/keepclient"
+ "git.arvados.org/arvados.git/lib/config"
+ "git.arvados.org/arvados.git/sdk/go/arvados"
+ "git.arvados.org/arvados.git/sdk/go/arvadosclient"
+ "git.arvados.org/arvados.git/sdk/go/keepclient"
)
var version = "dev"
ServiceURL = flag.String("url", "", "specify scheme://host of a single keep service to exercise (instead of using all advertised services like normal clients)")
ServiceUUID = flag.String("uuid", "", "specify UUID of a single advertised keep service to exercise")
getVersion = flag.Bool("version", false, "Print version information and exit.")
+ RunTime = flag.Duration("run-time", 0, "time to run (e.g. 60s), or 0 to run indefinitely (default)")
+ Repeat = flag.Int("repeat", 1, "number of times to repeat the experiment (default 1)")
+ UseIndex = flag.Bool("useIndex", false, "use the GetIndex call to get a list of blocks to read. Requires the SystemRoot token. Use this to rule out caching effects when reading.")
)
+func createKeepClient(stderr *log.Logger) (kc *keepclient.KeepClient) {
+ arv, err := arvadosclient.MakeArvadosClient()
+ if err != nil {
+ stderr.Fatal(err)
+ }
+ kc, err = keepclient.MakeKeepClient(arv)
+ if err != nil {
+ stderr.Fatal(err)
+ }
+ kc.Want_replicas = *Replicas
+
+ kc.HTTPClient = &http.Client{
+ Timeout: 10 * time.Minute,
+ // It's not safe to copy *http.DefaultTransport
+ // because it has a mutex (which might be locked)
+ // protecting a private map (which might not be nil).
+ // So we build our own, using the Go 1.12 default
+ // values.
+ Transport: &http.Transport{
+ TLSClientConfig: arvadosclient.MakeTLSConfig(arv.ApiInsecure),
+ },
+ }
+ overrideServices(kc, stderr)
+ return kc
+}
+
func main() {
flag.Parse()
os.Exit(0)
}
- log.Printf("keep-exercise %s started", version)
+ stderr := log.New(os.Stderr, "", log.LstdFlags)
- arv, err := arvadosclient.MakeArvadosClient()
- if err != nil {
- log.Fatal(err)
+ if *ReadThreads > 0 && *WriteThreads == 0 && !*UseIndex {
+ stderr.Fatal("At least one write thread is required if rthreads is non-zero and useIndex is not enabled")
}
- kc, err := keepclient.MakeKeepClient(arv)
- if err != nil {
- log.Fatal(err)
+
+ if *ReadThreads == 0 && *WriteThreads == 0 {
+ stderr.Fatal("Nothing to do!")
}
- kc.Want_replicas = *Replicas
- transport := *(http.DefaultTransport.(*http.Transport))
- transport.TLSClientConfig = arvadosclient.MakeTLSConfig(arv.ApiInsecure)
- kc.HTTPClient = &http.Client{
- Timeout: 10 * time.Minute,
- Transport: &transport,
+ kc := createKeepClient(stderr)
+
+ // When UseIndx is set, we need a KeepClient with SystemRoot powers to get
+ // the block index from the Keepstore. We use the SystemRootToken from
+ // the Arvados config.yml for that.
+ var cluster *arvados.Cluster
+ if *UseIndex {
+ cluster = loadConfig(stderr)
+ kc.Arvados.ApiToken = cluster.SystemRootToken
}
- overrideServices(kc)
+ ctx, cancel := context.WithCancel(context.Background())
+ defer cancel()
+ sigChan := make(chan os.Signal, 1)
+ signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
+ go func() {
+ <-sigChan
+ fmt.Print("\r") // Suppress the ^C print
+ cancel()
+ }()
- nextLocator := make(chan string, *ReadThreads+*WriteThreads)
+ csvHeader := "Timestamp,Elapsed,Read (bytes),Avg Read Speed (MiB/s),Peak Read Speed (MiB/s),Written (bytes),Avg Write Speed (MiB/s),Peak Write Speed (MiB/s),Errors,ReadThreads,WriteThreads,VaryRequest,VaryThread,BlockSize,Replicas,StatsInterval,ServiceURL,ServiceUUID,UseIndex,RunTime,Repeat"
+ var summary string
- go countBeans(nextLocator)
- for i := 0; i < *WriteThreads; i++ {
- nextBuf := make(chan []byte, 1)
- go makeBufs(nextBuf, i)
- go doWrites(kc, nextBuf, nextLocator)
+ for i := 0; i < *Repeat; i++ {
+ if ctx.Err() == nil {
+ summary = runExperiment(ctx, cluster, kc, summary, csvHeader, stderr)
+ stderr.Printf("*************************** experiment %d complete ******************************\n", i)
+ summary += fmt.Sprintf(",%d\n", i)
+ }
}
- for i := 0; i < *ReadThreads; i++ {
- go doReads(kc, nextLocator)
+ if ctx.Err() == nil {
+ stderr.Println("Summary:")
+ stderr.Println()
+ fmt.Println()
+ fmt.Println(csvHeader + ",Experiment")
+ fmt.Println(summary)
}
- <-make(chan struct{})
}
-// Send 1234 to bytesInChan when we receive 1234 bytes from keepstore.
-var bytesInChan = make(chan uint64)
-var bytesOutChan = make(chan uint64)
+func runExperiment(ctx context.Context, cluster *arvados.Cluster, kc *keepclient.KeepClient, summary string, csvHeader string, stderr *log.Logger) (newSummary string) {
+ // Send 1234 to bytesInChan when we receive 1234 bytes from keepstore.
+ var bytesInChan = make(chan uint64)
+ var bytesOutChan = make(chan uint64)
+ // Send struct{}{} to errorsChan when an error happens.
+ var errorsChan = make(chan struct{})
+
+ var nextLocator atomic.Value
+ // when UseIndex is set, this channel is used instead of nextLocator
+ var indexLocatorChan = make(chan string, 2)
+
+ newSummary = summary
-// Send struct{}{} to errorsChan when an error happens.
-var errorsChan = make(chan struct{})
+ // Start warmup
+ ready := make(chan struct{})
+ var warmup bool
+ if *ReadThreads > 0 {
+ warmup = true
+ if !*UseIndex {
+ stderr.Printf("Start warmup phase, waiting for 1 available block before reading starts\n")
+ } else {
+ stderr.Printf("Start warmup phase, waiting for block index before reading starts\n")
+ }
+ }
+ nextBuf := make(chan []byte, 1)
+ go makeBufs(nextBuf, 0, stderr)
+ if warmup && !*UseIndex {
+ go func() {
+ locator, _, err := kc.PutB(<-nextBuf)
+ if err != nil {
+ stderr.Print(err)
+ errorsChan <- struct{}{}
+ }
+ nextLocator.Store(locator)
+ stderr.Println("Warmup complete!")
+ close(ready)
+ }()
+ } else if *UseIndex {
+ // Get list of blocks to read
+ go getIndexLocators(ctx, cluster, kc, indexLocatorChan, stderr)
+ select {
+ case <-ctx.Done():
+ return
+ case <-indexLocatorChan:
+ stderr.Println("Warmup complete!")
+ close(ready)
+ }
+ } else {
+ close(ready)
+ }
+ select {
+ case <-ctx.Done():
+ return
+ case <-ready:
+ }
+
+ // Warmup complete
+ ctx, cancel := context.WithDeadline(ctx, time.Now().Add(*RunTime))
+ defer cancel()
+
+ for i := 0; i < *WriteThreads; i++ {
+ if i > 0 {
+ // the makeBufs goroutine with index 0 was already started for the warmup phase, above
+ nextBuf := make(chan []byte, 1)
+ go makeBufs(nextBuf, i, stderr)
+ }
+ go doWrites(ctx, kc, nextBuf, &nextLocator, bytesOutChan, errorsChan, stderr)
+ }
+ if *UseIndex {
+ for i := 0; i < *ReadThreads; i++ {
+ go doIndexReads(ctx, kc, cluster, indexLocatorChan, bytesInChan, errorsChan, stderr)
+ }
+ } else {
+ for i := 0; i < *ReadThreads; i++ {
+ go doReads(ctx, kc, &nextLocator, bytesInChan, errorsChan, stderr)
+ }
+ }
-func countBeans(nextLocator chan string) {
t0 := time.Now()
var tickChan <-chan time.Time
if *StatsInterval > 0 {
var bytesIn uint64
var bytesOut uint64
var errors uint64
+ var rateIn, rateOut float64
+ var maxRateIn, maxRateOut float64
+ var exit, printCsv bool
+ csv := log.New(os.Stdout, "", 0)
+ csv.Println()
+ csv.Println(csvHeader)
for {
select {
+ case <-ctx.Done():
+ printCsv = true
+ exit = true
case <-tickChan:
- elapsed := time.Since(t0)
- log.Printf("%v elapsed: read %v bytes (%.1f MiB/s), wrote %v bytes (%.1f MiB/s), errors %d",
- elapsed,
- bytesIn, (float64(bytesIn) / elapsed.Seconds() / 1048576),
- bytesOut, (float64(bytesOut) / elapsed.Seconds() / 1048576),
- errors,
- )
+ printCsv = true
case i := <-bytesInChan:
bytesIn += i
case o := <-bytesOutChan:
case <-errorsChan:
errors++
}
+ if printCsv {
+ elapsed := time.Since(t0)
+ rateIn = float64(bytesIn) / elapsed.Seconds() / 1048576
+ if rateIn > maxRateIn {
+ maxRateIn = rateIn
+ }
+ rateOut = float64(bytesOut) / elapsed.Seconds() / 1048576
+ if rateOut > maxRateOut {
+ maxRateOut = rateOut
+ }
+ line := fmt.Sprintf("%v,%v,%v,%.1f,%.1f,%v,%.1f,%.1f,%d,%d,%d,%t,%t,%d,%d,%s,%s,%s,%t,%s,%d",
+ time.Now().Format("2006/01/02 15:04:05"),
+ elapsed,
+ bytesIn, rateIn, maxRateIn,
+ bytesOut, rateOut, maxRateOut,
+ errors,
+ *ReadThreads,
+ *WriteThreads,
+ *VaryRequest,
+ *VaryThread,
+ *BlockSize,
+ *Replicas,
+ *StatsInterval,
+ *ServiceURL,
+ *ServiceUUID,
+ *UseIndex,
+ *RunTime,
+ *Repeat,
+ )
+ csv.Println(line)
+ if exit {
+ newSummary += line
+ return
+ }
+ printCsv = false
+ }
}
}
-func makeBufs(nextBuf chan<- []byte, threadID int) {
+func makeBufs(nextBuf chan<- []byte, threadID int, stderr *log.Logger) {
buf := make([]byte, *BlockSize)
if *VaryThread {
binary.PutVarint(buf, int64(threadID))
if *VaryRequest {
rnd := make([]byte, randSize)
if _, err := io.ReadFull(rand.Reader, rnd); err != nil {
- log.Fatal(err)
+ stderr.Fatal(err)
}
buf = append(rnd, buf[randSize:]...)
}
}
}
-func doWrites(kc *keepclient.KeepClient, nextBuf <-chan []byte, nextLocator chan<- string) {
- for buf := range nextBuf {
+func doWrites(ctx context.Context, kc *keepclient.KeepClient, nextBuf <-chan []byte, nextLocator *atomic.Value, bytesOutChan chan<- uint64, errorsChan chan<- struct{}, stderr *log.Logger) {
+ for ctx.Err() == nil {
+ buf := <-nextBuf
locator, _, err := kc.PutB(buf)
if err != nil {
- log.Print(err)
+ stderr.Print(err)
errorsChan <- struct{}{}
continue
}
bytesOutChan <- uint64(len(buf))
- for cap(nextLocator) > len(nextLocator)+*WriteThreads {
- // Give the readers something to do, unless
- // they have lots queued up already.
- nextLocator <- locator
+ nextLocator.Store(locator)
+ }
+}
+
+func getIndexLocators(ctx context.Context, cluster *arvados.Cluster, kc *keepclient.KeepClient, indexLocatorChan chan<- string, stderr *log.Logger) {
+ if ctx.Err() == nil {
+ var locators []string
+ for uuid := range kc.LocalRoots() {
+ reader, err := kc.GetIndex(uuid, "")
+ if err != nil {
+ stderr.Fatalf("Error getting index: %s\n", err)
+ }
+ scanner := bufio.NewScanner(reader)
+ for scanner.Scan() {
+ locators = append(locators, strings.Split(scanner.Text(), " ")[0])
+ }
+ }
+ stderr.Printf("Found %d locators\n", len(locators))
+ if len(locators) < 1 {
+ stderr.Fatal("Error: no locators found. The keepstores do not seem to contain any data. Remove the useIndex cli argument.")
+ }
+
+ mathRand.Seed(time.Now().UnixNano())
+ mathRand.Shuffle(len(locators), func(i, j int) { locators[i], locators[j] = locators[j], locators[i] })
+
+ for _, locator := range locators {
+ // We need the Collections.BlobSigningKey to sign our block requests. This requires access to /etc/arvados/config.yml
+ signedLocator := arvados.SignLocator(locator, kc.Arvados.ApiToken, time.Now().Local().Add(1*time.Hour), cluster.Collections.BlobSigningTTL.Duration(), []byte(cluster.Collections.BlobSigningKey))
+ select {
+ case <-ctx.Done():
+ return
+ case indexLocatorChan <- signedLocator:
+ }
+ }
+ stderr.Fatal("Error: ran out of locators to read!")
+ }
+}
+
+func loadConfig(stderr *log.Logger) (cluster *arvados.Cluster) {
+ loader := config.NewLoader(os.Stdin, nil)
+ loader.SkipLegacy = true
+
+ cfg, err := loader.Load()
+ if err != nil {
+ stderr.Fatal(err)
+ }
+ cluster, err = cfg.GetCluster("")
+ if err != nil {
+ stderr.Fatal(err)
+ }
+ return
+}
+
+func doIndexReads(ctx context.Context, kc *keepclient.KeepClient, cluster *arvados.Cluster, indexLocatorChan <-chan string, bytesInChan chan<- uint64, errorsChan chan<- struct{}, stderr *log.Logger) {
+ for ctx.Err() == nil {
+ select {
+ case <-ctx.Done():
+ return
+ case locator := <-indexLocatorChan:
+ rdr, size, url, err := kc.Get(locator)
+ if err != nil {
+ stderr.Print(err)
+ errorsChan <- struct{}{}
+ continue
+ }
+ n, err := io.Copy(ioutil.Discard, rdr)
+ rdr.Close()
+ if n != size || err != nil {
+ stderr.Printf("Got %d bytes (expected %d) from %s: %v", n, size, url, err)
+ errorsChan <- struct{}{}
+ continue
+ // Note we don't count the bytes received in
+ // partial/corrupt responses: we are measuring
+ // throughput, not resource consumption.
+ }
+ bytesInChan <- uint64(n)
}
}
}
-func doReads(kc *keepclient.KeepClient, nextLocator <-chan string) {
- for locator := range nextLocator {
+func doReads(ctx context.Context, kc *keepclient.KeepClient, nextLocator *atomic.Value, bytesInChan chan<- uint64, errorsChan chan<- struct{}, stderr *log.Logger) {
+ var locator string
+ for ctx.Err() == nil {
+ locator = nextLocator.Load().(string)
rdr, size, url, err := kc.Get(locator)
if err != nil {
- log.Print(err)
+ stderr.Print(err)
errorsChan <- struct{}{}
continue
}
n, err := io.Copy(ioutil.Discard, rdr)
rdr.Close()
if n != size || err != nil {
- log.Printf("Got %d bytes (expected %d) from %s: %v", n, size, url, err)
+ stderr.Printf("Got %d bytes (expected %d) from %s: %v", n, size, url, err)
errorsChan <- struct{}{}
continue
// Note we don't count the bytes received in
}
}
-func overrideServices(kc *keepclient.KeepClient) {
+func overrideServices(kc *keepclient.KeepClient, stderr *log.Logger) {
roots := make(map[string]string)
if *ServiceURL != "" {
roots["zzzzz-bi6l4-000000000000000"] = *ServiceURL
}
}
if len(roots) == 0 {
- log.Fatalf("Service %q was not in list advertised by API %+q", *ServiceUUID, kc.GatewayRoots())
+ stderr.Fatalf("Service %q was not in list advertised by API %+q", *ServiceUUID, kc.GatewayRoots())
}
} else {
return
projects / arvados.git / blobdiff