On Wed, Nov 13, 2019 at 9:37 AM bln prasad <prasad....@gmail.com> wrote: > > I'm running go application as systemd service. I've enabled cpu profile using > pprof as specified in documents. When service ran, it's creating file but no > samples are getting written to file. > Does it required any special build arguments? > > f, err := os.Create("/tmp/cpu.prof") > if err != nil { > log.Fatal("could not create CPU profile: ", err) > } > defer f.Close() > > if err := pprof.StartCPUProfile(f); err != nil { > log.Fatal("could not start CPU profile: ", err) > } > defer pprof.StopCPUProfile()
It's impossible to tell without seeing more of your program. The program has to actually do something between the calls to StartCPUProfile and StopCPUProfile. In particular, samples are taken by default every 10 milliseconds, so if your program runs for a much shorter amount of time then it would be normal to not see any samples. Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAOyqgcVaquW%2Bv6W26fPmdtoD9xZyhF9D4yOU6c08J%3D4tjT6a-w%40mail.gmail.com.