perf: gopool update schedwhen

lang/runtimex/runtime.go

@@ -23,6 +23,9 @@ import (
 //go:linkname Fastrand runtime.fastrand
 func Fastrand() uint32
 
+//go:linkname Nanotime runtime.nanotime
+func Nanotime() int64
+
 func getg() uintptr
 
 type puintptr uintptr

util/gopool/worker.go

@@ -20,6 +20,7 @@ import (
 	"sync"
 	"sync/atomic"
 
+	"github.com/bytedance/gopkg/lang/runtimex"
 	"github.com/bytedance/gopkg/util/logger"
 )
 
@@ -39,8 +40,12 @@ func newWorker() interface{} {
 
 func (w *worker) run() {
 	go func() {
+		g := runtimex.GetG()
+		m := g.M()
+		p := m.P()
 		for {
 			var t *task
+			now := runtimex.Nanotime()
 			w.pool.taskLock.Lock()
 			if w.pool.taskHead != nil {
 				t = w.pool.taskHead
@@ -54,6 +59,12 @@ func (w *worker) run() {
 				w.Recycle()
 				return
 			}
+
+			// update sysmon tick
+			st := *p.Sysmontick()
+			st.Schedwhen = now
+			*p.Sysmontick() = st
+
 			w.pool.taskLock.Unlock()
 			func() {
 				defer func() {