log.Printf
standard libraryThe 55th most-called standard-library function by production calls. Called 20,254 times across 589 modules; 18,891 of those run outside tests and generated code.
0% in production calls vs 2026-W37 (18,854 → 18,891)
- prod calls
- 18,891
- non-test, non-generated
- all calls
- 20,254
- total callsites
- modules
- 589
- distinct callers
- in loop
- 21%
- of prod calls
- in tests
- 7%
- 1,329 calls
- resolved
- 100%
- 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 →
- Package function100%A direct call to an exported package function, resolved by type.
who calls this
Notable callers
Production calls into Printf from notable Go projects. Open one on the map to see what else it hammers.
- Terraform 3,784 20%
- Tailscale 683 4%
- Kubernetes 426 2%
- HashiCorp 256 1%
- Go (golang.org/x) 190 1%
where it's called
Callsites in the wild
12 representative callsites of 20,254, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
-
CCTV/age @v0.0.0-20260829155415-4448f2097b2d
internal/generate.go:37
in loop - in loop
-
charm.land/catwalk @v0.52.48
cmd/cortecs/main.go:97
in loop - in loop
-
go/logging @v1.19.1
logging.go:204
in loop -
go/storage @v1.68.0
grpc_reader_multi_range.go:1095
in loop -
cockroachdb/cockroach @v19.2.12+incompatible
in loop - in loop
- in loop
-
docker/docker @v28.5.2+incompatible
in loop -
entgo.io/ent @v0.14.6
entc/gen/graph.go:292
in loop
top callers
The modules that reach for it
The modules that call Printf most in this snapshot.
- github.com/hashicorp/terraform-provider-aws3,24516%
- github.com/hashicorp/terraform9074%
- github.com/opentofu/opentofu9064%
- github.com/tailscale/tailscale6963%
- tailscale.com6963%
siblings
More from log
The other most-called functions in this package. See all →