go - pprof(对于 golang)不显示我的包的详细信息

Question

我一直在尝试使用 pprof 分析我的 go 应用程序 (evm-specification-miner)，但输出并不是很有用:

(pprof) top5
108.59mins of 109.29mins total (99.36%)
Dropped 607 nodes (cum <= 0.55mins)
Showing top 5 nodes out of 103 (cum >= 0.98mins)
      flat  flat%   sum%        cum   cum%
  107.83mins 98.66% 98.66% 108.64mins 99.40%  [evm-specification-miner]
  0.36mins  0.33% 98.99%      6mins  5.49%  net.dialIP
  0.30mins  0.28% 99.27%   4.18mins  3.83%  net.listenIP
  0.06mins 0.052% 99.32%  34.66mins 31.71%  
github.com/urfave/cli.BoolFlag.ApplyWithError
  0.04mins 0.036% 99.36%   0.98mins   0.9%  net.probeIPv6Stack

这是累积输出:

(pprof) top5 --cum
1.80hrs of 1.82hrs total (98.66%)
Dropped 607 nodes (cum <= 0.01hrs)
Showing top 5 nodes out of 103 (cum >= 1.53hrs)
      flat  flat%   sum%        cum   cum%
   1.80hrs 98.66% 98.66%    1.81hrs 99.40%  [evm-specification-miner]
         0     0% 98.66%    1.53hrs 83.93%  net.IP.matchAddrFamily
         0     0% 98.66%    1.53hrs 83.92%  net.(*UDPConn).WriteToUDP
         0     0% 98.66%    1.53hrs 83.90%  net.sockaddrToUDP
         0     0% 98.66%    1.53hrs 83.89%  net.(*UDPConn).readMsg

如您所见，大部分时间都花在 evm-specification-miner(这是我的 go 应用程序的名称)中，但我一直无法获得更多细节甚至理解这些方括号的意思(有a question有类似的问题，但没有得到任何答复)。

以下是构建和 pprof 命令:

go install evm-specification-miner
go tool pprof evm-specification-miner cpuprof

我什至尝试了调试标志 -gcflags "-N -l"(如此处所述:https://golang.org/doc/gdb#Introduction)，但无济于事。

分析是通过调用 pprof.StartCPUProfile() 和 pprof.StopCPUProfile() 完成的，如这篇博文所述:https://blog.golang.org/profiling-go-programs :

func StartProfiling(cpuprof string) error {
    f, err := os.Create(cpuprof)
    if err != nil {
        return err
    }
    return pprof.StartCPUProfile(f)
}

func StopProfiling() error {
    pprof.StopCPUProfile()
    return nil
}

StartProfiling 在 main() 开始时调用，StopProfiling 在收到信号(中断或终止)时调用(或者如果程序正常终止)。此配置文件是在中断后获得的。

Answer 1

看起来更新到 1.9rc1 修复了它。

我的配置文件中不再有[evm-specifiation-miner](郑重声明，最重要的功能甚至都不是来 self 自己的包，所以这比它们没有更奇怪之前出现)。