reflect.DeepEqual
standard libraryThe 311th most-called standard-library function by production calls. Called 37,482 times across 1,012 modules; 3,098 of those run outside tests and generated code.
0% in production calls vs 2026-W39 (3,088 → 3,098)
- prod calls
- 3,098
- non-test, non-generated
- all calls
- 37,482
- total callsites
- modules
- 1,012
- distinct callers
- in loop
- 24%
- of prod calls
- in tests
- 92%
- 34,381 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.
estimate
Estimated relative cost
Roughly 0.02× the estimated relative cost of fmt.Sprintf . Benchmarked at 123.7 ns/op × 3,098 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 DeepEqual from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 589 19%
- Longhorn 160 5%
- Grafana 121 4%
- Argo 104 3%
- Nomad 80 3%
where it's called
Callsites in the wild
12 representative callsites of 37,482, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
-
charm.land/fantasy @v0.45.2
object.go:135
in loop - in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop - in loop
- in loop
- in loop
- in loop
-
docker/docker @v28.5.2+incompatible
in loop -
encr.dev @v1.58.6
v2/codegen/cuegen/service.go:101
in loop -
etcd-io/etcd @v2.3.8+incompatible
in loop - in loop
top callers
The modules that reach for it
The modules that call DeepEqual most in this snapshot.
- github.com/kubernetes/kubernetes2,2846%
- k8s.io/kubernetes1,2263%
- github.com/aws/aws-sdk-go-v2/service/dynamodb7692%
- github.com/aws/aws-sdk-go-v2/service/s35401%
- github.com/hashicorp/vault5221%
siblings
More from reflect
The other most-called functions in this package. See all →