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Code Issues Releases Activity

toolbox: improve the profile

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This commit is contained in:
astaxie 2014-08-15 15:09:59 +08:00
parent f4867aad5a
commit 3969cd3b40
1 changed files with 24 additions and 15 deletions
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39
toolbox/profile.go
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@ -13,6 +13,7 @@ import (
"fmt" "fmt"
"io" "io"
"log" "log"
"net/http"
"os" "os"
"runtime" "runtime"
"runtime/debug" "runtime/debug"
@ -43,40 +44,48 @@ func ProcessInput(input string, w io.Writer) {
case "lookup block": case "lookup block":
p := pprof.Lookup("block") p := pprof.Lookup("block")
p.WriteTo(w, 2) p.WriteTo(w, 2)
case "start cpuprof": case "get cpuprof":
StartCPUProfile() GetCPUProfile(w.(http.ResponseWriter))
case "stop cpuprof":
StopCPUProfile()
case "get memprof": case "get memprof":
MemProf() MemProf(w)
case "gc summary": case "gc summary":
PrintGCSummary(w) PrintGCSummary(w)
} }
} }
// record memory profile in pprof // record memory profile in pprof
func MemProf() { func MemProf(w io.Writer) {
if f, err := os.Create("mem-" + strconv.Itoa(pid) + ".memprof"); err != nil { filename := "mem-" + strconv.Itoa(pid) + ".memprof"
log.Fatal("record memory profile failed: ", err) if f, err := os.Create(filename); err != nil {
fmt.Fprintf(w, "create file %s error %s\n", filename, err.Error())
log.Fatal("record heap profile failed: ", err)
} else { } else {
runtime.GC() runtime.GC()
pprof.WriteHeapProfile(f) pprof.WriteHeapProfile(f)
f.Close() f.Close()
fmt.Fprintf(w, "create heap profile %s \n", filename)
fmt.Fprintf(w, "Now you can use this to check it: go tool pprof <program> %s\n", filename)
} }
} }
// start cpu profile monitor // start cpu profile monitor
func StartCPUProfile() { func GetCPUProfile(rw http.ResponseWriter) {
f, err := os.Create("cpu-" + strconv.Itoa(pid) + ".pprof") sec := 30
rw.Header().Set("Content-Type", "application/octet-stream")
filename := "cpu-" + strconv.Itoa(pid) + ".pprof"
f, err := os.Create(filename)
if err != nil { if err != nil {
log.Fatal(err) rw.Header().Set("Content-Type", "text/plain; charset=utf-8")
rw.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(rw, "Could not enable CPU profiling: %s\n", err)
log.Fatal("record cpu profile failed: ", err)
} }
fmt.Fprintf(rw, "start cpu profileing\n")
pprof.StartCPUProfile(f) pprof.StartCPUProfile(f)
} time.Sleep(time.Duration(sec) * time.Second)
// stop cpu profile monitor
func StopCPUProfile() {
pprof.StopCPUProfile() pprof.StopCPUProfile()
fmt.Fprintf(rw, "create cpu profile %s \n", filename)
fmt.Fprintf(rw, "Now you can use this to check it: go tool pprof <program> %s\n", filename)
} }
// print gc information to io.Writer // print gc information to io.Writer