google.golang.org/grpc/grpclog/internal.LoggerV2.Fatalf

third-party

The 3541st most-called third-party method by production calls. Called 173 times across 2 modules; 172 of those run outside tests and generated code.

15% in production calls vs 2026-W39 (149 → 172)

All of google.golang.org/grpc/grpclog/internal → Docs on pkg.go.dev ↗

prod calls: 172; non-test, non-generated
all calls: 173; total callsites
modules: 2; distinct callers
in loop: 15%; of prod calls
in tests: <1%; 1 calls
resolved: 0%; to a known target

resolution mix

How each call resolves

How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →

Interface method100%Called through an interface. The runtime target may differ.

who calls this

Notable callers

Production calls into LoggerV2.Fatalf from notable Go projects. Open one on the map to see what else it hammers.

gRPC 149 87%
OpenTelemetry 23 13%

where it's called

Callsites in the wild

12 representative callsites of 173, prioritizing in-loop and non-test usage. We link to source, never display it.

LoggerV2.Fatalf · 12 of 173 callsites

google.golang.org/grpc @v1.84.0

interop/xds_federation/client.go:84

in loop
contrib/instrumentation/google.golang.org/grpc/otelgrpc @v0.71.0

internal/test/test_utils.go:116

in loop
google.golang.org/grpc @v1.84.0

interop/xds_federation/client.go:98

in loop
contrib/instrumentation/google.golang.org/grpc/otelgrpc @v0.71.0

internal/test/test_utils.go:156

in loop
google.golang.org/grpc @v1.84.0

interop/test_utils.go:121

in loop
contrib/instrumentation/google.golang.org/grpc/otelgrpc @v0.71.0

internal/test/test_utils.go:160

in loop
google.golang.org/grpc @v1.84.0

interop/client/client.go:139

in loop
contrib/instrumentation/google.golang.org/grpc/otelgrpc @v0.71.0

internal/test/test_utils.go:193

in loop
google.golang.org/grpc @v1.84.0

interop/test_utils.go:161

in loop
contrib/instrumentation/google.golang.org/grpc/otelgrpc @v0.71.0

internal/test/test_utils.go:197

in loop
google.golang.org/grpc @v1.84.0

interop/test_utils.go:165

in loop
contrib/instrumentation/google.golang.org/grpc/otelgrpc @v0.71.0

internal/test/test_utils.go:201

in loop

top callers

The modules that reach for it

The modules that call LoggerV2.Fatalf most in this snapshot.

google.golang.org/grpc15087%
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc2313%

siblings

How each call resolves

Notable callers

Callsites in the wild

The modules that reach for it

More from google.golang.org/grpc/grpclog/internal