os.File.Write
standard libraryThe 513th most-called standard-library method by production calls. Called 2,815 times across 543 modules; 1,569 of those run outside tests and generated code.
2% in production calls vs 2026-W37 (1,539 → 1,569)
- prod calls
- 1,569
- non-test, non-generated
- all calls
- 2,815
- total callsites
- modules
- 543
- distinct callers
- in loop
- 13%
- of prod calls
- in tests
- 44%
- 1,243 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 →
- Concrete method99%A method on a value whose type is known exactly.
- Embedded method1%Reached through an embedded type.
who calls this
Notable callers
Production calls into File.Write from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 85 5%
- Go (golang.org/x) 28 2%
- containerd 27 2%
- Istio 20 1%
- HashiCorp 19 1%
where it's called
Callsites in the wild
12 representative callsites of 2,815, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop -
miekg/dns @v0.6.114
cmd/atomdns/handlers/dbfile/transfer.go:66
in loop - in loop
-
dgraph-io/badger @v1.6.2
in loop -
encr.dev @v1.58.6
cli/cmd/git-remote-encore/main.go:52
in loop - in loop
-
gitea.dev @v1.27.3
modules/assetfs/embed.go:355
in loop - in loop
- in loop
- in loop
- in loop
top callers
The modules that reach for it
The modules that call File.Write most in this snapshot.
- github.com/esengine/DeepSeek-Reasonix562%
- github.com/seaweedfs/seaweedfs562%
- github.com/kubernetes/kubernetes542%
- github.com/u-root/u-root492%
- github.com/weaviate/weaviate442%
siblings
More from os
The other most-called members in this package. See all →