{"id":50307991,"url":"https://github.com/netoptimizer/veth-backpressure-performance-testing","last_synced_at":"2026-05-28T18:01:36.466Z","repository":{"id":357431969,"uuid":"1160068394","full_name":"netoptimizer/veth-backpressure-performance-testing","owner":"netoptimizer","description":null,"archived":false,"fork":false,"pushed_at":"2026-05-12T18:11:48.000Z","size":2282,"stargazers_count":0,"open_issues_count":1,"forks_count":1,"subscribers_count":0,"default_branch":"main","last_synced_at":"2026-05-12T20:14:19.086Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Shell","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/netoptimizer.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2026-02-17T14:02:52.000Z","updated_at":"2026-05-12T18:11:53.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/netoptimizer/veth-backpressure-performance-testing","commit_stats":null,"previous_names":["netoptimizer/veth-backpressure-performance-testing"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/netoptimizer/veth-backpressure-performance-testing","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/netoptimizer%2Fveth-backpressure-performance-testing","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/netoptimizer%2Fveth-backpressure-performance-testing/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/netoptimizer%2Fveth-backpressure-performance-testing/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/netoptimizer%2Fveth-backpressure-performance-testing/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/netoptimizer","download_url":"https://codeload.github.com/netoptimizer/veth-backpressure-performance-testing/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/netoptimizer%2Fveth-backpressure-performance-testing/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":33619972,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-05-28T02:00:06.440Z","response_time":99,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2026-05-28T18:01:36.167Z","updated_at":"2026-05-28T18:01:36.461Z","avatar_url":"https://github.com/netoptimizer.png","language":"Shell","funding_links":[],"categories":[],"sub_categories":[],"readme":"# veth Backpressure Performance Testing\n\nTools for testing and measuring veth qdisc backpressure and BQL (Byte\nQueue Limits) behavior. This repository contains two independent test\nsuites:\n\n## [`reproducer/`](reproducer/README.md) -- Backpressure Reproducer\n\nChris Arges' dark-buffer latency reproducer. Uses netns + `bbperf` to\ndemonstrate how veth's 256-entry `ptr_ring` acts as a \"dark buffer\"\nhidden from the qdisc, causing head-of-line blocking and ping drops\nunder load.\n\nSee [`reproducer/README.md`](reproducer/README.md) for details.\n\n## [`selftests/`](selftests/README.md) -- BQL Selftest\n\nStress test for the veth BQL patchset. Exercises BQL code paths under\nsustained UDP load, measures latency reduction, and detects DQL\naccounting bugs (kernel BUG_ON/Oops).\n\nSee [`selftests/README.md`](selftests/README.md) for details.\n\n## Shared venv\n\nThe `reproducer/` suite uses `bbperf` (installed via `pip` into a\nPython virtualenv). The venv lives at the repo root (`./venv/`) so it\ncan be shared between suites:\n\n```bash\napt install python3-virtualenv\n# venv is created automatically by reproducer/setup.sh on first run\n```\n\n## Related\n\n- Upstream patchset: [[PATCH net-next v5 0/5] veth: add Byte Queue Limits (BQL) support](https://lore.kernel.org/all/20260505132159.241305-1-hawk@kernel.org/)\n\n## License\n\nGPL-2.0\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnetoptimizer%2Fveth-backpressure-performance-testing","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnetoptimizer%2Fveth-backpressure-performance-testing","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnetoptimizer%2Fveth-backpressure-performance-testing/lists"}