testing.TB.Logf
standard libraryThe 1305th most-called standard-library method by production calls. Called 793 times across 116 modules; 492 of those run outside tests and generated code.
No change in production calls since 2026-W39.
- prod calls
- 492
- non-test, non-generated
- all calls
- 793
- total callsites
- modules
- 116
- distinct callers
- in loop
- 17%
- of prod calls
- in tests
- 38%
- 301 calls
- resolved
- 2%
- 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 →
- Embedded method1%Reached through an embedded type.
- Interface method98%Called through an interface. The runtime target may differ.
- Method value<1%A method captured as a value, then called.
who calls this
Notable callers
Production calls into TB.Logf from notable Go projects. Open one on the map to see what else it hammers.
- Tailscale 77 16%
- HashiCorp 66 13%
- Docker 33 7%
- Kubernetes 29 6%
- containerd 21 4%
where it's called
Callsites in the wild
12 representative callsites of 793, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
-
golang-migrate/migrate @v3.5.4+incompatible
in loop - in loop
-
jackc/pgx @v3.6.2+incompatible
in loop - in loop
-
ory/kratos @v1.3.1
in loop - in loop
- in loop
-
sagernet/tailscale @v1.102.1-sing-box-1.14-mod.5
in loop -
seaweedfs/seaweedfs @v0.0.0-20260928104011-150a69fe11f4
in loop - in loop
top callers
The modules that reach for it
The modules that call TB.Logf most in this snapshot.
- github.com/tailscale/tailscale10914%
- tailscale.com10914%
- github.com/hashicorp/boundary749%
- github.com/restic/restic456%
- github.com/kubernetes/kubernetes263%
siblings
More from testing
The other most-called members in this package. See all →