pprof 查看goroutine
package main
import (
"net/http"
"runtime/pprof"
)
var quit chan struct{} = make(chan struct{})
func f() {
<-quit
}
func handler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain")
p := pprof.Lookup("goroutine")
p.WriteTo(w, 1)
}
func main() {
for i := 0; i < 10000; i++ {
go f()
}
http.HandleFunc("/", handler)
http.ListenAndServe(":11181", nil)
}
这上面的例子中，我们启动了10000个goroutine，并阻塞，然后通过访问http://localhost:11181/，我们就可以得到整个goroutine的信息，仅列出关键信息：
goroutine profile: total 10004
10000 @ 0x147d9 0x1485b 0x1dcf8 0x1de28 0x203c 0x14a70 # 0x1dcf8 chanrecv+0x4e8 /private/var/folders/00/0sdwh000h01000cxqpysvccm0035qk/T/makerelease054730537/go/src/pkg/runtime/chan.goc:268 # 0x1de28 runtime.chanrecv1+0x38 /private/var/folders/00/0sdwh000h01000cxqpysvccm0035qk/T/makerelease054730537/go/src/pkg/runtime/chan.goc:352
可以看到，在main.f这个函数中，有10000个goroutine正在执行
转自：http://www.tuicool.com/articles/VBFNNfA