vendor: update github.com/VictoriaMetrics/fasthttp from 1.0.12 to 1.0.13

This should fix a bug in vmagent with high CPU usage during failed scrapes with small `scrape_timeout`.

docs/CHANGELOG.md

@@ -10,6 +10,7 @@
 * FATURE: vmagent: accept `scrape_offset` option at `scrape_config`. This option may be useful when scrapes must start at the specified offset of every scrape interval. See [these docs](https://victoriametrics.github.io/vmagent.html#troubleshooting) for details.
 * FEATURE: vmauth: allow using regexp paths in `url_map`. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1112) for details.
 
+* BUGFIX: vmagent: prevent from high CPU usage bug during failing scrapes with small `scrape_timeout` (less than a few seconds).
 * BUGFIX: vmagent: reduce memory usage when Kubernetes service discovery is used in big number of distinct jobs by sharing the cache. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1113
 * BUGFIX: prevent exponent overflow when processing extremely small values close to zero such as `2.964393875E-314`. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1114
 

go.mod

@@ -7,7 +7,7 @@ require (
 
 	// Do not use the original github.com/valyala/fasthttp because of issues
 	// like https://github.com/valyala/fasthttp/commit/996610f021ff45fdc98c2ce7884d5fa4e7f9199b
-	github.com/VictoriaMetrics/fasthttp v1.0.12
+	github.com/VictoriaMetrics/fasthttp v1.0.13
 	github.com/VictoriaMetrics/metrics v1.15.2
 	github.com/VictoriaMetrics/metricsql v0.14.0
 	github.com/aws/aws-sdk-go v1.37.22

go.sum

@@ -82,8 +82,8 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/VictoriaMetrics/fastcache v1.5.8 h1:XW+YVx9lEXITBVv35ugK9OyotdNJVcbza69o3jmqWuI=
 github.com/VictoriaMetrics/fastcache v1.5.8/go.mod h1:SiMZNgwEPJ9qWLshu9tyuE6bKc9ZWYhcNV/L7jurprQ=
-github.com/VictoriaMetrics/fasthttp v1.0.12 h1:Ag0E119yrH4BTxVyjKD9TeiSImtG9bUcg/stItLJhSE=
+github.com/VictoriaMetrics/fasthttp v1.0.13 h1:5JNS4vSPdN4QyfcpAg3Y1Wznf0uXEuSOFpeIlFw3MgM=
-github.com/VictoriaMetrics/fasthttp v1.0.12/go.mod h1:3SeUL4zwB/p/a9aEeRc6gdlbrtNHXBJR6N376EgiSHU=
+github.com/VictoriaMetrics/fasthttp v1.0.13/go.mod h1:3SeUL4zwB/p/a9aEeRc6gdlbrtNHXBJR6N376EgiSHU=
 github.com/VictoriaMetrics/metrics v1.12.2/go.mod h1:Z1tSfPfngDn12bTfZSCqArT3OPY3u88J12hSoOhuiRE=
 github.com/VictoriaMetrics/metrics v1.15.2 h1:w/GD8L9tm+gvx1oZvAofRRXwammiicdI0jgLghA2Gdo=
 github.com/VictoriaMetrics/metrics v1.15.2/go.mod h1:Z1tSfPfngDn12bTfZSCqArT3OPY3u88J12hSoOhuiRE=

vendor/github.com/VictoriaMetrics/fasthttp/client.go

@@ -1023,7 +1023,7 @@ func (c *HostClient) doNonNilReqResp(req *Request, resp *Response) (bool, error)
 		panic("BUG: resp cannot be nil")
 	}
 
-	atomic.StoreUint32(&c.lastUseTime, uint32(CoarseTimeNow().Unix()-startTimeUnix))
+	atomic.StoreUint32(&c.lastUseTime, uint32(time.Now().Unix()-startTimeUnix))
 
 	// Free up resources occupied by response before sending the request,
 	// so the GC may reclaim these resources (e.g. response body).
@@ -1039,7 +1039,7 @@ func (c *HostClient) doNonNilReqResp(req *Request, resp *Response) (bool, error)
 		// Optimization: update write deadline only if more than 25%
 		// of the last write deadline exceeded.
 		// See https://github.com/golang/go/issues/15133 for details.
-		currentTime := CoarseTimeNow()
+		currentTime := time.Now()
 		if currentTime.Sub(cc.lastWriteDeadlineTime) > (c.WriteTimeout >> 2) {
 			if err = conn.SetWriteDeadline(currentTime.Add(c.WriteTimeout)); err != nil {
 				c.closeConn(cc)
@@ -1083,7 +1083,7 @@ func (c *HostClient) doNonNilReqResp(req *Request, resp *Response) (bool, error)
 		// Optimization: update read deadline only if more than 25%
 		// of the last read deadline exceeded.
 		// See https://github.com/golang/go/issues/15133 for details.
-		currentTime := CoarseTimeNow()
+		currentTime := time.Now()
 		if currentTime.Sub(cc.lastReadDeadlineTime) > (c.ReadTimeout >> 2) {
 			if err = conn.SetReadDeadline(currentTime.Add(c.ReadTimeout)); err != nil {
 				c.closeConn(cc)
@@ -1255,7 +1255,7 @@ func acquireClientConn(conn net.Conn) *clientConn {
 	}
 	cc := v.(*clientConn)
 	cc.c = conn
-	cc.createdTime = CoarseTimeNow()
+	cc.createdTime = time.Now()
 	return cc
 }
 
@@ -1267,7 +1267,7 @@ func releaseClientConn(cc *clientConn) {
 var clientConnPool sync.Pool
 
 func (c *HostClient) releaseConn(cc *clientConn) {
-	cc.lastUseTime = CoarseTimeNow()
+	cc.lastUseTime = time.Now()
 	c.connsLock.Lock()
 	c.conns = append(c.conns, cc)
 	c.connsLock.Unlock()
@@ -1970,7 +1970,7 @@ func (c *pipelineConnClient) writer(conn net.Conn, stopCh <-chan struct{}) error
 			// Optimization: update write deadline only if more than 25%
 			// of the last write deadline exceeded.
 			// See https://github.com/golang/go/issues/15133 for details.
-			currentTime := CoarseTimeNow()
+			currentTime := time.Now()
 			if currentTime.Sub(lastWriteDeadlineTime) > (writeTimeout >> 2) {
 				if err = conn.SetWriteDeadline(currentTime.Add(writeTimeout)); err != nil {
 					w.err = err
@@ -2051,7 +2051,7 @@ func (c *pipelineConnClient) reader(conn net.Conn, stopCh <-chan struct{}) error
 			// Optimization: update read deadline only if more than 25%
 			// of the last read deadline exceeded.
 			// See https://github.com/golang/go/issues/15133 for details.
-			currentTime := CoarseTimeNow()
+			currentTime := time.Now()
 			if currentTime.Sub(lastReadDeadlineTime) > (readTimeout >> 2) {
 				if err = conn.SetReadDeadline(currentTime.Add(readTimeout)); err != nil {
 					w.err = err

vendor/github.com/VictoriaMetrics/fasthttp/coarseTime.go

@@ -1,28 +0,0 @@
-package fasthttp
-
-import (
-	"sync/atomic"
-	"time"
-)
-
-// CoarseTimeNow returns the current time truncated to the nearest second.
-//
-// This is a faster alternative to time.Now().
-func CoarseTimeNow() time.Time {
-	tp := coarseTime.Load().(*time.Time)
-	return *tp
-}
-
-func init() {
-	t := time.Now().Truncate(time.Second)
-	coarseTime.Store(&t)
-	go func() {
-		for {
-			time.Sleep(time.Second)
-			t := time.Now().Truncate(time.Second)
-			coarseTime.Store(&t)
-		}
-	}()
-}
-
-var coarseTime atomic.Value

vendor/github.com/VictoriaMetrics/fasthttp/server.go

@@ -1281,7 +1281,7 @@ func (s *Server) Serve(ln net.Listener) error {
 			if time.Since(lastOverflowErrorTime) > time.Minute {
 				s.logger().Printf("The incoming connection cannot be served, because %d concurrent connections are served. "+
 					"Try increasing Server.Concurrency", maxWorkersCount)
-				lastOverflowErrorTime = CoarseTimeNow()
+				lastOverflowErrorTime = time.Now()
 			}
 
 			// The current server reached concurrency limit,
@@ -1323,7 +1323,7 @@ func acceptConn(s *Server, ln net.Listener, lastPerIPErrorTime *time.Time) (net.
 				if time.Since(*lastPerIPErrorTime) > time.Minute {
 					s.logger().Printf("The number of connections from %s exceeds MaxConnsPerIP=%d",
 						getConnIP4(c), s.MaxConnsPerIP)
-					*lastPerIPErrorTime = CoarseTimeNow()
+					*lastPerIPErrorTime = time.Now()
 				}
 				continue
 			}
@@ -1438,7 +1438,7 @@ func (s *Server) serveConn(c net.Conn) error {
 	serverName := s.getServerName()
 	connRequestNum := uint64(0)
 	connID := nextConnID()
-	currentTime := CoarseTimeNow()
+	currentTime := time.Now()
 	connTime := currentTime
 	maxRequestBodySize := s.MaxRequestBodySize
 	if maxRequestBodySize <= 0 {
@@ -1491,7 +1491,7 @@ func (s *Server) serveConn(c net.Conn) error {
 			}
 		}
 
-		currentTime = CoarseTimeNow()
+		currentTime = time.Now()
 		ctx.lastReadDuration = currentTime.Sub(ctx.time)
 
 		if err != nil {
@@ -1632,7 +1632,7 @@ func (s *Server) serveConn(c net.Conn) error {
 			break
 		}
 
-		currentTime = CoarseTimeNow()
+		currentTime = time.Now()
 	}
 
 	if br != nil {
@@ -1688,7 +1688,7 @@ func (s *Server) updateWriteDeadline(c net.Conn, ctx *RequestCtx, lastDeadlineTi
 	// Optimization: update write deadline only if more than 25%
 	// of the last write deadline exceeded.
 	// See https://github.com/golang/go/issues/15133 for details.
-	currentTime := CoarseTimeNow()
+	currentTime := time.Now()
 	if currentTime.Sub(lastDeadlineTime) > (writeTimeout >> 2) {
 		if err := c.SetWriteDeadline(currentTime.Add(writeTimeout)); err != nil {
 			panic(fmt.Sprintf("BUG: error in SetWriteDeadline(%s): %s", writeTimeout, err))
@@ -1871,7 +1871,7 @@ func (ctx *RequestCtx) Init2(conn net.Conn, logger Logger, reduceMemoryUsage boo
 	ctx.connID = nextConnID()
 	ctx.s = fakeServer
 	ctx.connRequestNum = 0
-	ctx.connTime = CoarseTimeNow()
+	ctx.connTime = time.Now()
 	ctx.time = ctx.connTime
 
 	keepBodyBuffer := !reduceMemoryUsage

vendor/github.com/VictoriaMetrics/fasthttp/workerpool.go

@@ -187,7 +187,7 @@ func (wp *workerPool) getCh() *workerChan {
 }
 
 func (wp *workerPool) release(ch *workerChan) bool {
-	ch.lastUseTime = CoarseTimeNow()
+	ch.lastUseTime = time.Now()
 	wp.lock.Lock()
 	if wp.mustStop {
 		wp.lock.Unlock()

vendor/modules.txt

@@ -13,7 +13,7 @@ cloud.google.com/go/storage
 # github.com/VictoriaMetrics/fastcache v1.5.8
 ## explicit
 github.com/VictoriaMetrics/fastcache
-# github.com/VictoriaMetrics/fasthttp v1.0.12
+# github.com/VictoriaMetrics/fasthttp v1.0.13
 ## explicit
 github.com/VictoriaMetrics/fasthttp
 github.com/VictoriaMetrics/fasthttp/fasthttputil