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callcount

encoding/binary.littleEndian.PutUint32

standard library

The 403rd most-called standard-library method by production calls. Called 2,908 times across 192 modules; 2,086 of those run outside tests and generated code.

0% in production calls vs 2026-W37 (2,080 → 2,086)

All of encoding/binary → Docs on pkg.go.dev ↗

prod calls
2,086
non-test, non-generated
all calls
2,908
total callsites
modules
192
distinct callers
in loop
11%
of prod calls
in tests
18%
519 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 method98%A method on a value whose type is known exactly.
  • Embedded method2%Reached through an embedded type.

estimate

Experimental

Estimated relative cost

Roughly 0.00× the estimated relative cost of fmt.Sprintf . Benchmarked at 2.04 ns/op × 2,086 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 littleEndian.PutUint32 from notable Go projects. Open one on the map to see what else it hammers.

where it's called

Callsites in the wild

12 representative callsites of 2,908, prioritizing in-loop and non-test usage. We link to source, never display it.

littleEndian.PutUint32 · 12 of 2,908 callsites

top callers

The modules that reach for it

The modules that call littleEndian.PutUint32 most in this snapshot.

  • github.com/sagernet/gvisor73225%
  • github.com/diskfs/go-diskfs2067%
  • github.com/gogo/protobuf1515%
  • github.com/hirochachacha/go-smb21274%
  • github.com/planetscale/vtprotobuf1114%

siblings

More from encoding/binary

The other most-called members in this package. See all →