strings.Builder.String
standard libraryThe 107th most-called standard-library method by production calls. Called 13,872 times across 784 modules; 9,836 of those run outside tests and generated code.
1% in production calls vs 2026-W39 (9,757 → 9,836)
- prod calls
- 9,836
- non-test, non-generated
- all calls
- 13,872
- total callsites
- modules
- 784
- distinct callers
- in loop
- 8%
- of prod calls
- in tests
- 21%
- 2,901 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.
estimate
Estimated relative cost
Roughly 0.00× the estimated relative cost of fmt.Sprintf . Benchmarked at 1.95 ns/op × 9,836 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 Builder.String from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 203 2%
- Grafana 169 2%
- Cilium 164 2%
- CockroachDB 148 2%
- Istio 100 1%
where it's called
Callsites in the wild
12 representative callsites of 13,872, prioritizing in-loop and non-test usage. We link to source, never display it.
-
lipgloss/v2 @v2.0.6
runes.go:37
in loop - in loop
- in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop -
miekg/dns @v0.6.117
internal/bin/bin.go:87
in loop -
readeck/go-readability/v2 @v2.1.2
internal/re2go/normalize.go:90
in loop - in loop
- in loop
- in loop
-
encr.dev @v1.58.6
pkg/errinsrc/srcrender.go:129
in loop - in loop
-
gitea.dev @v1.27.3
modules/indexer/code/bleve/token/path/path.go:63
in loop
top callers
The modules that reach for it
The modules that call Builder.String most in this snapshot.
- github.com/elastic/go-elasticsearch/v81,1298%
- github.com/esengine/DeepSeek-Reasonix5244%
- github.com/elastic/go-elasticsearch/v74273%
- github.com/ollama/ollama3573%
- vitess.io/vitess2952%
siblings
More from strings
The other most-called members in this package. See all →