go - pprof (for golang) doesn't show details for my package -


i've been trying profile go application (evm-specification-miner) pprof, output not useful:

(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

and here cumulative output:

(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

as can see, of time spent in evm-specification-miner (which name of go application), i've been unable obtain more details or understand these square brackets meant (there a question similar problem, didn't receive answer).

here build , pprof commands:

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

i've tried debug flags -gcflags "-n -l" (as noted here: https://golang.org/doc/gdb#introduction), no avail.

the profiling done calls pprof.startcpuprofile() , pprof.stopcpuprofile() explained blog post: 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 called @ beginning of main(), , stopprofiling when signal (interrupt or kill) received (or if program terminates normally). profile obtained after interruption.

looks updating 1.9rc1 fixed it.

i no longer have [evm-specifiation-miner] in profile (for record, top functions not come own package, weirder did not appear before).


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