## Runtime {#runtime}

<!-- CL 742580 -->

Tracebacks for modules with `go` directives configuring Go 1.27 or later will now
include [runtime/pprof](https://pkg.go.dev/runtime/pprof) goroutine labels in
the header line. This behavior can be disabled with `GODEBUG=tracebacklabels=0`
(added in [Go 1.26](/doc/godebug#go-126)). This opt-out is expected to be
kept indefinitely in case goroutine labels acquire sensitive information that

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Addr2line is a minimal simulation of the GNU addr2line tool,
// just enough to support pprof.
//
// Usage:
//
//	go tool addr2line binary
//
// Addr2line reads hexadecimal addresses, one per line and with optional 0x prefix,
// from standard input. For each input address, addr2line prints two output lines,

			err := pprof.Lookup("threadcreate").WriteTo(&buf, 0)
			return buf.Bytes(), err
		}
	case madmin.ProfilerGoroutines:
		prof.ext = "txt"
		prof.record("goroutine", 1, "before")
		prof.record("goroutine", 2, "before,debug=2")
		prof.stopFn = func() ([]byte, error) {
			var buf bytes.Buffer
			err := pprof.Lookup("goroutine").WriteTo(&buf, 1)
			return buf.Bytes(), err
		}
	case madmin.ProfilerTrace:

Go 1.26 added a new `tracebacklabels` setting that controls the inclusion of
goroutine labels set through the the `runtime/pprof` package. Setting `tracebacklabels=1`
includes these key/value pairs in the goroutine status header of runtime
tracebacks and debug=2 runtime/pprof stack dumps. This format may change in the future.
(see go.dev/issue/76349)

	github.com/golang-jwt/jwt/v5 v5.2.2 // indirect
	github.com/golang/protobuf v1.5.4 // indirect
	github.com/golang/snappy v1.0.0 // indirect
	github.com/google/go-tpm v0.9.3 // indirect
	github.com/google/pprof v0.0.0-20250422154841-e1f9c1950416 // indirect
	github.com/google/s2a-go v0.1.9 // indirect
	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect

github.com/google/martian/v3 v3.3.3/go.mod h1:iEPrYcgCF7jA9OtScMFQyAlZZ4YXTKEtJ1E6RWzmBA0=
github.com/google/pprof v0.0.0-20240227163752-401108e1b7e7/go.mod h1:czg5+yv1E0ZGTi6S6vVK1mke0fV+FaUhNGcd6VRS9Ik=
github.com/google/pprof v0.0.0-20250422154841-e1f9c1950416 h1:1/qwHx8P72glDXdyCKesJ+/c40x71SY4q2avOxJ2iYQ=
github.com/google/pprof v0.0.0-20250422154841-e1f9c1950416/go.mod h1:5hDyRhoBCxViHszMt12TnOpEI4VVi+U8Gm9iphldiMA=

- github.com/google/cadvisor: [v0.52.1 → v0.53.0](https://github.com/google/cadvisor/compare/v0.52.1...v0.53.0)
- github.com/google/pprof: [d1b30fe → 27863c8](https://github.com/google/pprof/compare/d1b30fe...27863c8)
- github.com/onsi/ginkgo/v2: [v2.21.0 → v2.27.2](https://github.com/onsi/ginkgo/compare/v2.21.0...v2.27.2)

- github.com/google/cadvisor: [v0.56.0 → v0.56.2](https://github.com/google/cadvisor/compare/v0.56.0...v0.56.2)
- github.com/google/pprof: [27863c8 → 294ebfa](https://github.com/google/pprof/compare/27863c8...294ebfa)
- github.com/ianlancetaylor/demangle: [bd984b5 → f615e6b](https://github.com/ianlancetaylor/demangle/compare/bd984b5...f615e6b)

- github.com/google/cel-go: [v0.20.1 → v0.22.0](https://github.com/google/cel-go/compare/v0.20.1...v0.22.0)
- github.com/google/pprof: [4bfdf5a → d1b30fe](https://github.com/google/pprof/compare/4bfdf5a...d1b30fe)
- github.com/gregjones/httpcache: [9cad4c3 → 901d907](https://github.com/gregjones/httpcache/compare/9cad4c3...901d907)

- github.com/google/martian/v3: [v3.1.0 → v3.2.1](https://github.com/google/martian/v3/compare/v3.1.0...v3.2.1)
- github.com/google/pprof: [cbba55b → 94a9f03](https://github.com/google/pprof/compare/cbba55b...94a9f03)
- github.com/googleapis/gax-go/v2: [v2.0.5 → v2.1.1](https://github.com/googleapis/gax-go/v2/compare/v2.0.5...v2.1.1)