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gvisor vs runc

gvisor and runc share 3 technologies: containerd, github.com/coreos/go-systemd/v22, and github.com/sirupsen/logrus. Both are written in Go.

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What they share and what sets them apart

google

gvisor

Application Kernel for Containers

Go19.9kRead on November 5, 2026, at commit da95e9bWhat is gvisor built with?

Only in gvisor

In common

opencontainers

runc

CLI tool for spawning and running containers according to the OCI specification

Go13.5kRead on November 10, 2026, at commit 817ee95What is runc built with?

Only in runc

  • github.com/checkpoint-restore/go-criu/v8

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
gvisor814,952 lines written1,669 code files
runc32,216 lines written128 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
gvisor0.3% of its commits signed by AIWith Claude Code and Gemini CLI
runc0.4% of its commits signed by AIWith Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
gvisorLast push November 5, 202611,902 commits19,877 stars
runcLast push November 9, 20265,225 commits13,543 stars
TestsThe files that test the code, and the share of code files a test imports.
gvisor921 test files55.1% of its code files have a test that imports them
runc51 test files43% of its code files have a test that imports them

Frequently asked questions

Which is bigger, gvisor or runc?
gvisor, with 814,952 lines written; runc has 32,216.

The proof: google/gvisor's code at commit da95e9b

Which has more GitHub stars, gvisor or runc?
gvisor, with 19,877 stars; runc has 13,543.

The proof: google/gvisor on GitHub

Which has more tests, gvisor or runc?
gvisor, with 921 test files; runc has 51.

The proof: google/gvisor's code at commit da95e9b

Which was updated more recently, gvisor or runc?
runc: its last push was on November 9, 2026, and gvisor's on November 5, 2026.

The proof: opencontainers/runc's commits on GitHub

Which has more commits signed by AI, gvisor or runc?
runc: an AI signed 0.4% of its commits, with Claude Code; in gvisor, 0.3%.

The proof: the commits each tool signed in opencontainers/runc

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