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cmd/compile: seemingly stuck writing telemetry #68311

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cmd/compile: seemingly stuck writing telemetry#68311
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findleyr
Labels
NeedsFixThe path to resolution is known, but the work has not been done.compiler/runtimeIssues related to the Go compiler and/or runtime.release-blockertelemetryx/telemetry issues
Milestone
Go1.23
@dominikh

Description

@dominikh
dominikh
opened on Jul 4, 2024

Go version

go version devel go1.23-82c371a307 Fri Jun 28 19:59:35 2024 +0000 linux/amd64

Output of go env in your module/workspace:

GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/dominikh/.cache/go-build'
GOENV='/home/dominikh/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/home/dominikh/prj/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/home/dominikh/prj'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/home/dominikh/prj/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/home/dominikh/prj/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='devel go1.23-82c371a307 Fri Jun 28 19:59:35 2024 +0000'
GODEBUG=''
GOTELEMETRY='local'
GOTELEMETRYDIR='/home/dominikh/.config/go/telemetry'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/home/dominikh/prj/src/honnef.co/go/wgpu-demo/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/nix-shell.KkNJRp/go-build3177551663=/tmp/go-build -gno-record-gcc-switches'

What did you do?

Run go tool compile -help

What did you see happen?

The process never terminates and shows high CPU usage, most of which is spent in syscalls.. strace -ff shows a rapid and endless stream of

[pid 701400] openat(AT_FDCWD, "/home/dominikh/.config/go/telemetry/local/compile@devel-devel-linux-amd64-2024-07-04.v1.count", O_RDWR|O_CREAT|O_CLOEXEC, 0666) = 6
[pid 701400] fcntl(6, F_GETFL)          = 0x8002 (flags O_RDWR|O_LARGEFILE)
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE <unfinished ...>
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] <... fcntl resumed>)       = 0
[pid 701400] epoll_ctl(4, EPOLL_CTL_ADD, 6, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1507866546, u64=9223363117715568562}}) = -1 EPERM (Operation not permitted)
[pid 701400] fcntl(6, F_GETFL)          = 0x8802 (flags O_RDWR|O_NONBLOCK|O_LARGEFILE)
[pid 701400] fcntl(6, F_SETFL, O_RDWR|O_LARGEFILE) = 0
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] fstat(6,  <unfinished ...>
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] <... fstat resumed>{st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] fstat(6, {st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_SHARED, 6, 0) = 0x7ffff7e20000
[pid 701400] munmap(0x7fffb121c000, 16384 <unfinished ...>
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] <... munmap resumed>)      = 0
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] close(7)                   = 0
[pid 701400] openat(AT_FDCWD, "/home/dominikh/.config/go/telemetry/local/compile@devel-devel-linux-amd64-2024-07-04.v1.count", O_RDWR|O_CREAT|O_CLOEXEC, 0666) = 7
[pid 701400] fcntl(7, F_GETFL)          = 0x8002 (flags O_RDWR|O_LARGEFILE)
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] fcntl(7, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE <unfinished ...>
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] <... fcntl resumed>)       = 0
[pid 701400] epoll_ctl(4, EPOLL_CTL_ADD, 7, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1507866547, u64=9223363117715568563}}) = -1 EPERM (Operation not permitted)
[pid 701400] fcntl(7, F_GETFL)          = 0x8802 (flags O_RDWR|O_NONBLOCK|O_LARGEFILE)
[pid 701400] fcntl(7, F_SETFL, O_RDWR|O_LARGEFILE) = 0
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] fstat(7,  <unfinished ...>
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] <... fstat resumed>{st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] fstat(7, {st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_SHARED, 7, 0) = 0x7fffb121c000
[pid 701400] munmap(0x7ffff7e20000, 16384 <unfinished ...>
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] <... munmap resumed>)      = 0
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] close(6)                   = 0
[pid 701400] openat(AT_FDCWD, "/home/dominikh/.config/go/telemetry/local/compile@devel-devel-linux-amd64-2024-07-04.v1.count", O_RDWR|O_CREAT|O_CLOEXEC, 0666) = 6
[pid 701400] fcntl(6, F_GETFL)          = 0x8002 (flags O_RDWR|O_LARGEFILE)
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE <unfinished ...>
[pid 701405] nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 701400] <... fcntl resumed>)       = 0
[pid 701400] epoll_ctl(4, EPOLL_CTL_ADD, 6, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1507866548, u64=9223363117715568564}}) = -1 EPERM (Operation not permitted)
[pid 701400] fcntl(6, F_GETFL)          = 0x8802 (flags O_RDWR|O_NONBLOCK|O_LARGEFILE)
[pid 701400] fcntl(6, F_SETFL, O_RDWR|O_LARGEFILE) = 0
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] fstat(6,  <unfinished ...>
[pid 701405] nanosleep({tv_sec=0, tv_nsec=40000},  <unfinished ...>
[pid 701400] <... fstat resumed>{st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] fstat(6, {st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_SHARED, 6, 0) = 0x7ffff7e20000
[pid 701400] munmap(0x7fffb121c000, 16384) = 0
[pid 701400] close(7 <unfinished ...>
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] <... close resumed>)       = 0
[pid 701405] nanosleep({tv_sec=0, tv_nsec=80000},  <unfinished ...>
[pid 701400] openat(AT_FDCWD, "/home/dominikh/.config/go/telemetry/local/compile@devel-devel-linux-amd64-2024-07-04.v1.count", O_RDWR|O_CREAT|O_CLOEXEC, 0666) = 7
[pid 701400] fcntl(7, F_GETFL)          = 0x8002 (flags O_RDWR|O_LARGEFILE)
[pid 701400] fcntl(7, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE) = 0
[pid 701400] epoll_ctl(4, EPOLL_CTL_ADD, 7, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1507866549, u64=9223363117715568565}}) = -1 EPERM (Operation not permitted)
[pid 701400] fcntl(7, F_GETFL)          = 0x8802 (flags O_RDWR|O_NONBLOCK|O_LARGEFILE)
[pid 701400] fcntl(7, F_SETFL, O_RDWR|O_LARGEFILE <unfinished ...>
[pid 701405] <... nanosleep resumed>NULL) = 0
[pid 701400] <... fcntl resumed>)       = 0
[pid 701405] nanosleep({tv_sec=0, tv_nsec=160000},  <unfinished ...>
[pid 701400] fstat(7, {st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] fstat(7, {st_mode=S_IFREG|0644, st_size=16384, ...}) = 0
[pid 701400] mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_SHARED, 7, 0) = 0x7fffb121c000
[pid 701400] munmap(0x7ffff7e20000, 16384) = 0
[pid 701400] close(6)                   = 0

What did you expect to see?

Not that.

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NeedsFixThe path to resolution is known, but the work has not been done.compiler/runtimeIssues related to the Go compiler and/or runtime.release-blockertelemetryx/telemetry issues

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