pprof: go tool pprof cannot read the pprof file normally

[sellskin]

Go version

go version go1.21rc2 darwin/arm64

Output of go env in your module/workspace:

GO111MODULE='auto'
GOARCH='arm64'
GOBIN=''
GOCACHE='/Users/ss/Library/Caches/go-build'
GOENV='/Users/ss/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMODCACHE='/Users/ss/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/ss/go'
GOPRIVATE=''
GOPROXY=''
GOROOT='/Users/ss/.g/go'
GOSUMDB='off'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/Users/ss/.g/go/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.21rc2'
GCCGO='gccgo'
AR='ar'
CC='clang'
CXX='clang++'
CGO_ENABLED='0'
GOMOD=''
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 -arch arm64 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/9t/839s3jmj73bcgyp5x_xh3gw00000gn/T/go-build581398422=/tmp/go-build -gno-record-gcc-switches -fno-common'

What did you do?

go tool pprof memory_pprof_2024_03_10_02:11:49

What did you see happen?

Fetching profile over HTTP from http://memory_pprof_2024_03_10_02:11:49/debug/pprof/profile
memory_pprof_2024_03_10_02:11:49: Get "http://memory_pprof_2024_03_10_02:11:49/debug/pprof/profile": dial tcp: lookup memory_pprof_2024_03_10_02:11: no such host
failed to fetch any source profiles

What did you expect to see?

Hope to enter the expected interactive interface

[seankhliao]

this is an upstream pprof issue of how it treats names with colons

Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and proposals only.

For questions please refer to https://github.com/golang/go/wiki/Questions

[sellskin]

this is an upstream pprof issue of how it treats names with colons

Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and proposals only.

For questions please refer to https://github.com/golang/go/wiki/Questions

Thanks for your reply!

But according to my understanding, isn't this a bug?

[ianlancetaylor]

The pprof program that is included with the Go distribution comes from https://github.com/google/pprof. That is where bugs against pprof should be reported. Thanks.

[cuishuang]

this is an upstream pprof issue of how it treats names with colons
Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and proposals only.
For questions please refer to https://github.com/golang/go/wiki/Questions

Thanks for your reply!

But according to my understanding, isn't this a bug?

I have made corresponding modifications to the upstream warehouse and it has been merged(google/pprof#817). At the same time, go also requires minor changes and is currently in a ready state (https://go-review.googlesource.com/c/go/+/539595). The new version of Go will not have similar situations again

For now, the simplest way is to modify the file name so that it does not contain a colon