添加pprof性能分析

common/pprof.go

@@ -0,0 +1,44 @@
+package common
+
+import (
+	"fmt"
+	"github.com/shirou/gopsutil/cpu"
+	"os"
+	"runtime/pprof"
+	"time"
+)
+
+// Monitor 定时监控cpu使用率，超过阈值输出pprof文件
+func Monitor() {
+	for {
+		percent, err := cpu.Percent(time.Second, false)
+		if err != nil {
+			panic(err)
+		}
+		if percent[0] > 80 {
+			fmt.Println("cpu usage too high")
+			// write pprof file
+			if _, err := os.Stat("./pprof"); os.IsNotExist(err) {
+				err := os.Mkdir("./pprof", os.ModePerm)
+				if err != nil {
+					SysLog("创建pprof文件夹失败 " + err.Error())
+					continue
+				}
+			}
+			f, err := os.Create("./pprof/" + fmt.Sprintf("cpu-%s.pprof", time.Now().Format("20060102150405")))
+			if err != nil {
+				SysLog("创建pprof文件失败 " + err.Error())
+				continue
+			}
+			err = pprof.StartCPUProfile(f)
+			if err != nil {
+				SysLog("启动pprof失败 " + err.Error())
+				continue
+			}
+			time.Sleep(10 * time.Second) // profile for 30 seconds
+			pprof.StopCPUProfile()
+			f.Close()
+		}
+		time.Sleep(30 * time.Second)
+	}
+}