如何使Go的“阻止”分析器正常工作？

Question

I am trying to enable Go's "block" profiler by adding the following code to my main function:

f, err := os.Create(profFile)
if err != nil {
    // Error handling
}

runtime.SetBlockProfileRate(1)
p := pprof.Lookup("block")
defer func() {
    err := p.WriteTo(f, 0)
    if err != nil {
        Logger.Error("Error writing block profile: %v", err)
    }
}()

I do see the profile file created after my application is run and I am trying to interpret the results by running the command:

$ go tool pprof --text <PROFILE_FILE> 
29.95mins of 29.95mins total (  100%)
      flat  flat%   sum%        cum   cum%
 29.95mins   100%   100%  29.95mins   100%  

I don't see any data on the block times. Is the code to generate block profile data correct? Or perhaps I need to use different options to "go tool"? Any help is appreciated.

Thanks, Raghu

Answer 1

As @JimB mentioned in the comment, the correct way of running "pprof" is as follows:

$ go tool pprof  --text <PATH_TO_BINARY> <PROFILE_FILE>