prof
Wrap the official net/http/pprof
route and add the profile io wait time route.
Example of use
sampling profile by http
import "github.com/zhufuyi/sponge/pkg/prof"
mux := http.NewServeMux()
prof.Register(mux, prof.WithPrefix("/myServer"), prof.WithIOWaitTime())
httpServer := &http.Server{
Addr: ":8080",
Handler: mux,
}
if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
panic("listen and serve error: " + err.Error())
}
sampling profile by system notification signal
import "github.com/zhufuyi/sponge/pkg/prof"
func WaitSign() {
p := prof.NewProfile()
signals := make(chan os.Signal, 1)
signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP, syscall.SIGTRAP)
for {
v := <-signals
switch v {
case syscall.SIGTRAP:
p.StartOrStop()
case syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP:
os.Exit(0)
}
}
}
# view the program's pid
ps -aux | grep serverName
# notification of sampling profile, default 60s, in less than 60s, if the second execution will actively stop sampling profile
kill -trap pid