fmt.Printf
standard libraryThe 40th most-called standard-library function by production calls. Called 43,098 times across 993 modules; 32,001 of those run outside tests and generated code.
1% in production calls vs 2026-W37 (31,653 → 32,001)
- prod calls
- 32,001
- non-test, non-generated
- all calls
- 43,098
- total callsites
- modules
- 993
- distinct callers
- in loop
- 24%
- of prod calls
- in tests
- 25%
- 10,968 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.
- Kubernetes 760 2%
- Dgraph 586 2%
- Argo 421 1%
- Velero 298 <1%
- CockroachDB 217 <1%
where it's called
Callsites in the wild
12 representative callsites of 43,098, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
-
CCTV/age @v0.0.0-20260829155415-4448f2097b2d
internal/testkit/testkit.go:408
in loop - in loop
-
charm.land/catwalk @v0.52.48
cmd/neuralwatt/main.go:128
in loop -
charm.land/fantasy @v0.44.0
providers/kronk/options.go:314
in loop - in loop
- in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop -
miekg/dns @v0.6.114
internal/dnsperf/dnsperf.go:76
in loop - in loop
- in loop
top callers
The modules that reach for it
The modules that call Printf most in this snapshot.
- github.com/gastownhall/gastown3,7559%
- github.com/steveyegge/gastown3,7559%
- github.com/halfrost/LeetCode-Go2,7806%
- github.com/gastownhall/beads1,9985%
- github.com/steveyegge/beads1,9985%
siblings
More from fmt
The other most-called functions in this package. See all →