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https://github.com/DataDog/go-profiler-notes.git
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more wip code
This commit is contained in:
Felix Geisendörfer
parent
162cf1e024
commit
cd90af2a08
2 changed files with 168 additions and 0 deletions
52
examples/runtime-stack/main.go
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52
examples/runtime-stack/main.go
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@ -0,0 +1,52 @@
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package main
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import (
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"fmt"
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"runtime"
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"time"
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)
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func main() {
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sleep := 1*time.Minute + 10*time.Second
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go sleepLoop(sleep)
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go sleepLoop(time.Second)
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go chanReceiveForever()
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go indirectSleepLoop(time.Second)
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time.Sleep(time.Second)
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// g.wait
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runtime.GC()
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fmt.Printf("sleeping for %s before showing stack traces\n", sleep)
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time.Sleep(sleep)
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runtime.GC()
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fmt.Printf("%s has passed, dumping all stacks", sleep)
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buf := make([]byte, 1024*1024)
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n := runtime.Stack(buf, true)
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buf = buf[:n]
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fmt.Printf("%s\n", buf)
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fmt.Printf("waiting indefinitely so you can press ctrl+\\ to compare the output\n")
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runtime.GC()
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chanReceiveForever()
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}
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func sleepLoop(d time.Duration) {
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for {
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time.Sleep(d)
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}
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}
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func chanReceiveForever() {
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forever := make(chan struct{})
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<-forever
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}
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func indirectSleepLoop(d time.Duration) {
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indirectSleepLoop2(d)
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}
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func indirectSleepLoop2(d time.Duration) {
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go sleepLoop(d)
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}
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116
examples/runtime-stack/runtime-stack.txt
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116
examples/runtime-stack/runtime-stack.txt
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@ -0,0 +1,116 @@
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$ go run examples/runtime-stack/main.go
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sleeping for 1m10s before showing stack traces
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1m10s has passed, dumping all stacksgoroutine 1 [running]:
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main.main()
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:26 +0x228
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goroutine 18 [sleep, 1 minutes]:
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time.Sleep(0x104c533c00)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/time.go:188 +0xbf
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main.sleepLoop(0x104c533c00)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:37 +0x2b
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created by main.main
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:12 +0x56
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goroutine 19 [sleep, 1 minutes]:
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time.Sleep(0x3b9aca00)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/time.go:188 +0xbf
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main.sleepLoop(0x3b9aca00)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:37 +0x2b
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created by main.main
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:13 +0x77
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goroutine 20 [chan receive, 1 minutes]:
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main.chanReceiveForever()
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:43 +0x4d
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created by main.main
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:14 +0x8f
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goroutine 22 [sleep, 1 minutes]:
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time.Sleep(0x3b9aca00)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/time.go:188 +0xbf
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main.sleepLoop(0x3b9aca00)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:37 +0x2b
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created by main.indirectSleepLoop2
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:51 +0x3f
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waiting indefinitely so you can press ctrl+\ to compare the output
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^\SIGQUIT: quit
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PC=0x7fff739f9882 m=0 sigcode=0
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goroutine 0 [idle]:
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runtime.pthread_cond_wait(0x1172620, 0x11725e0, 0x7ffe00000000)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/sys_darwin.go:414 +0x39
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runtime.semasleep(0xffffffffffffffff, 0x103af45)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/os_darwin.go:63 +0x8d
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runtime.notesleep(0x11723e8)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/lock_sema.go:181 +0xe7
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runtime.stopm()
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/proc.go:1924 +0xc5
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runtime.findrunnable(0xc000029800, 0x0)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/proc.go:2485 +0xa7f
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runtime.schedule()
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/proc.go:2683 +0x2d7
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runtime.park_m(0xc000082600)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/proc.go:2851 +0x9d
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runtime.mcall(0x10613d6)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/asm_amd64.s:318 +0x5b
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goroutine 1 [chan receive, 3 minutes]:
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main.chanReceiveForever(...)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:43
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main.main()
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:32 +0x33d
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goroutine 18 [sleep]:
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time.Sleep(0x104c533c00)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/time.go:188 +0xbf
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main.sleepLoop(0x104c533c00)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:37 +0x2b
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created by main.main
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:12 +0x56
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goroutine 19 [sleep]:
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time.Sleep(0x3b9aca00)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/time.go:188 +0xbf
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main.sleepLoop(0x3b9aca00)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:37 +0x2b
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created by main.main
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:13 +0x77
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goroutine 20 [chan receive, 4 minutes]:
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main.chanReceiveForever()
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:43 +0x4d
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created by main.main
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:14 +0x8f
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goroutine 22 [sleep]:
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time.Sleep(0x3b9aca00)
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/usr/local/Cellar/go/1.15.6/libexec/src/runtime/time.go:188 +0xbf
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main.sleepLoop(0x3b9aca00)
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:37 +0x2b
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created by main.indirectSleepLoop2
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/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/runtime-stack/main.go:51 +0x3f
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rax 0x104
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rbx 0x2
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rcx 0x7ffeefbff248
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rdx 0xec00
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rdi 0x1172620
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rsi 0xec010000ed00
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rbp 0x7ffeefbff2e0
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rsp 0x7ffeefbff248
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r8 0x0
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r9 0xa0
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r10 0x0
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r11 0x202
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r12 0x1172620
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r13 0x16
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r14 0xec010000ed00
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r15 0x167fdc0
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rip 0x7fff739f9882
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rflags 0x203
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cs 0x7
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fs 0x0
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gs 0x0
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exit status 2
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