bytes.Buffer.Write
standard libraryThe 269th most-called standard-library method by production calls. Called 5,393 times across 634 modules; 3,612 of those run outside tests and generated code.
0% in production calls vs 2026-W39 (3,610 → 3,612)
- prod calls
- 3,612
- non-test, non-generated
- all calls
- 5,393
- total callsites
- modules
- 634
- distinct callers
- in loop
- 32%
- of prod calls
- in tests
- 28%
- 1,503 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 method97%A method on a value whose type is known exactly.
- Embedded method3%Reached through an embedded type.
estimate
Estimated relative cost
Roughly 0.00× the estimated relative cost of fmt.Sprintf . Benchmarked at 2.84 ns/op × 3,612 production calls, normalized so fmt.Sprintf = 1.0.
This is not dollars and not a verdict. Per-op time depends heavily on inputs (argument sizes, contention, patterns), the benchmark ran on a single machine (darwin/arm64 (Apple Silicon), go1.26.0), and static call counts are not runtime frequency. How this is estimated →
who calls this
Notable callers
Production calls into Buffer.Write from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 108 3%
- Grafana 77 2%
- Dgraph 73 2%
- Go (golang.org/x) 54 1%
- HashiCorp 46 1%
where it's called
Callsites in the wild
12 representative callsites of 5,393, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
-
cdr.dev/slog @v1.6.1
map.go:43
in loop -
glamour/v2 @v2.0.1
ansi/margin.go:116
in loop -
cilium/proxy @v0.0.0-20260921120314-283c3f1fedbb
in loop -
cockroachdb/cockroach @v19.2.12+incompatible
in loop - in loop
- in loop
-
dgraph-io/dgraph @v1.2.8
in loop -
moby/buildkit @v0.33.0
in loop -
encr.dev @v1.58.6
cli/cmd/encore/namespace/namespace.go:73
in loop -
entgo.io/ent @v0.14.6
dialect/sql/schema/writer.go:288
in loop
top callers
The modules that reach for it
The modules that call Buffer.Write most in this snapshot.
- github.com/elastic/go-elasticsearch/v83006%
- github.com/shadow1ng/fscan2695%
- github.com/kovidgoyal/imaging1142%
- github.com/ethereum/go-ethereum1122%
- github.com/hybridgroup/gobot731%
siblings
More from bytes
The other most-called members in this package. See all →