io.NewSectionReader
standard libraryThe 1807th most-called standard-library function by production calls. Called 445 times across 86 modules; 344 of those run outside tests and generated code.
1% in production calls vs 2026-W37 (346 → 344)
- prod calls
- 344
- non-test, non-generated
- all calls
- 445
- total callsites
- modules
- 86
- distinct callers
- in loop
- 21%
- of prod calls
- in tests
- 23%
- 101 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.
who calls this
Notable callers
Production calls into NewSectionReader from notable Go projects. Open one on the map to see what else it hammers.
- containerd 70 20%
- Docker 34 10%
- Go (golang.org/x) 15 4%
- Grafana 8 2%
- Cilium 7 2%
where it's called
Callsites in the wild
12 representative callsites of 445, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
-
moby/moby @v28.5.2+incompatible
in loop -
Binject/debug @v0.0.0-20260128230015-4e22595eaac6
in loop - in loop
- in loop
-
bodgit/sevenzip @v1.6.5
in loop - in loop
-
denverdino/aliyungo @v0.0.0-20230411124812-ab98a9173ace
in loop - in loop
- in loop
- in loop
-
ledongthuc/pdf @v0.0.0-20260907135840-6c8c28e0e8a0
in loop
top callers
The modules that reach for it
The modules that call NewSectionReader most in this snapshot.
- github.com/masahiro331/go-ext4-filesystem307%
- github.com/containerd/stargz-snapshotter/estargz256%
- github.com/Binject/debug235%
- github.com/containerd/stargz-snapshotter204%
- github.com/u-root/u-root184%
siblings
More from io
The other most-called functions in this package. See all →