Please answer these questions before submitting your issue. Thanks! ### What version of pprof are you using? ``` yangjie05-mac:awesomeProject35 jie.yang05$ go version go version go1.17.4 darwin/arm64 ``` ### What system os and processor architecture are you using? macos ``` yangjie05-mac:awesomeProject35 jie.yang05$ arch arm64 ``` ### What did you do? I run my code and want to get disasm from the cpuprofile. code: ``` package main import ( "math/rand" "os" "runtime/pprof" "time" ) var global int func main() { f, _ := os.Create("cpu.pprof") pprof.StartCPUProfile(f) t := time.After(3 * time.Second) loop: for { select { case <-t: break loop default: global = rand.Int() } } pprof.StopCPUProfile() f.Sync() f.Close() } ``` script: ``` go build -o=bin main.go ./bin go tool pprof bin cpu.pprof disasm rand ``` ### What did you expect to see? expect to see (which i run in my macos with same code but go version 1.16) ``` (pprof) disasm rand Total: 2.67s ROUTINE ======================== math/rand.(*lockedSource).Int63 450ms 450ms (flat, cum) 16.85% of Total 220ms 220ms 106ce80: MOVQ GS:0x30, CX ;math/rand.(*lockedSource).Int63 rand.go:387 . . 106ce89: CMPQ 0x10(CX), SP ;rand.go:387 . . 106ce8d: JBE 0x106cf90 . . 106ce93: SUBQ $0x20, SP . . 106ce97: MOVQ BP, 0x18(SP) . . 106ce9c: LEAQ 0x18(SP), BP . . 106cea1: XORL AX, AX ;rand.go:388 . . 106cea3: MOVQ 0x28(SP), DX . . 106cea8: MOVL $0x1, BX . . 106cead: LOCK CMPXCHGL BX, 0(DX) 60ms 60ms 106ceb1: SETE BL ;math/rand.(*lockedSource).Int63 rand.go:388 ``` ### What did you see instead? nothing but total ``` (pprof) disasm rand Total: 2.63s (pprof) ```
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cristaloleg commentedon Aug 15, 2023
Also golang/go#50891