My applications main starts few go routines and runs indefinitely. its like
pprof.StopCPUProfile() may never get called.
Thanks,
BLN
On Wednesday, 13 November 2019 23:30:47 UTC+5:30, Ian Lance Taylor wrote:
>
> On Wed, Nov 13, 2019 at 9:37 AM bln prasad <pras...@gmail.com
> <javascript:>> 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
>
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