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上(这是我的go应用程序的名称(，但是我一直无法获得更多细节，甚至无法理解这些方括号的含义(有一个问题有类似的问题，但它没有得到任何答案(。
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()来完成的，如以下博客文章所述：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在接收到信号(中断或终止(时(或程序正常终止(。此配置文件是在中断后获得的。
看起来更新到 1.9rc1 修复了它。
我在配置文件中不再有[evm-specifiation-miner](作为记录，顶级功能甚至不是来自我自己的软件包，所以它比以前没有出现过更奇怪(。