On Saturday, March 31, 2018 at 12:15:34 AM UTC+2, Dave Cheney wrote:
>
> It looks like you’re stopping the block profile immediately after starting
> it.
>
> Try github.com/pkg/profile which will take care of the plumbing for you.
Thanks Dave for pointing your code.
After viewing your code, I corrected my code.
f,err :=os.Create("/tmp/test_blocking.prof")
if err != nil {
log.WithError(err).Fatal("creation of blocking
profiler file is failed" )
}
runtime.SetBlockProfileRate(1)
defer func() {
if err := pprof.Lookup("block").WriteTo(f,0); err
!=nil {
log.WithError(err).Fatal("blocking profiler
statistic collecition initialization failed")
}
f.Close()
runtime.SetBlockProfileRate(0)
}()
Now I am getting block profile information. When I run the go tool pprof, I
got nothing in the result. Why?
go tool pprof test_blocking.prof
Main binary filename not available.
Type: delay
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top30
Showing nodes accounting for 13.16mins, 100% of 13.16mins total
flat flat% sum% cum cum%
13.16mins 100% 100% 13.16mins 100% <unknown>
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