Hi, I am attempting to profile a Go application but keep getting empty pprof data with go 1.7.3 on Mac Sierra (package installer version from https://golang.org/dl). The profiling output exists, but the top10 output is meaningless. Profiling the same code on ubuntu 16.04 with go 1.7.3 returns meaningful output.
I've tried profiling several different applications and I get the same meaningless profiling data for each on Mac OS Sierra. The simplest shareable example I've tried is that of GitHub user eapache: https://gist.github.com/eapache/580b7dbd8800fe9a3234#file-test-go. The output of that test is below: Output on Mac OS Sierra: $ go tool pprof profile.out Entering interactive mode (type "help" for commands) (pprof) top10 31.22s of 31.22s total ( 100%) flat flat% sum% cum cum% 31.22s 100% 100% 31.22s 100% Output on Ubuntu 16.04: $ go tool pprof profile.out Entering interactive mode (type "help" for commands) (pprof) top10 21320ms of 34690ms total (61.46%) Dropped 119 nodes (cum <= 173.45ms) Showing top 10 nodes out of 97 (cum >= 660ms) flat flat% sum% cum cum% 8910ms 25.68% 25.68% 8910ms 25.68% runtime.memclr 4030ms 11.62% 37.30% 4030ms 11.62% runtime.memmove 1860ms 5.36% 42.66% 4220ms 12.16% runtime.sweepone 1670ms 4.81% 47.48% 1670ms 4.81% runtime/internal/atomic.Xchg 1080ms 3.11% 50.59% 1080ms 3.11% runtime/internal/atomic.Xadd 880ms 2.54% 53.13% 20890ms 60.22% runtime.mallocgc 790ms 2.28% 55.41% 1740ms 5.02% runtime.writebarrierptr_nostore1 730ms 2.10% 57.51% 27300ms 78.70% runtime.concatstrings 710ms 2.05% 59.56% 1770ms 5.10% runtime.(*mheap).allocSpanLocked 660ms 1.90% 61.46% 660ms 1.90% runtime.procyield Is there anyone else running Mac OS Sierra who can check/confirm correct profiling functionality on Go 1.7.3? Thanks, Bob -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
