false-sharing-and-contended SKILL.md skillA
false-sharing-and-contended from robsonkades/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add robsonkades/agent-skills/false-sharing-and-contended@git:20260927.9ecadfdPins git:20260927.9ecadfd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- robsonkades/agent-skills
- Path
skills/false-sharing-and-contended/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260927.9ecadfd, committed Sep 27, 2026
- First version recorded
- Sep 3, 2026
- Size
- 13,779 bytes
- Repository stars
- 3
- License
- Apache-2.0
Proving and mitigating cache-line false sharing between independent locations with hot writes. Covers ownership and address/layout hypotheses, coherence/HITM evidence limits, JMH topology, arrays and object placement, `@Contended` module/restriction mechanics, grouping and padding, JOL/address validation, manual padding fragility, striping, compact headers, memory cost and cross-socket/NUMA validation. Use when updates to distinct fields scale poorly, when padding is proposed, or when…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# False sharing and `@Contended` ## Purpose Establish that writes invalidate a coherence granule/cache line used by another core for a different logical variable (writing or reading), then choose ownership/layout changes whose throughput/latency benefit exceeds memory and maintenance cost. Cache misses or poor scaling alone do not prove false sharing. Reuse the requested outcome, existing captures/layouts, ownership and deployment constraints. Preserve the project's Java target; use Java 25 as the reference when none is specified. Answer a narrow layout/flag question from its contract without requiring a performance study. For an investigation, ask only for missing facts that change attribution or the next experiment; retain an adequate design and work within the accepted capture/recovery budget. ## Ownership boundary - This skill owns false-sharing hypothesis, layout/placement, `@Contended`, padding and validation. - `cpu-cache-and-numa` owns cache/coherence/NUMA fundamentals. - `lock-inflation` and `lock-free-patterns` own logical lock/CAS contention. - `object-layout-and-footprint` owns general object sizing/header trade-offs. ## Proof contract ```text …
Read the whole file at its exact version.
How to install
mdr add robsonkades/agent-skills/false-sharing-and-contended@sha256:b2c9159a6075d42dThe line at the top of this page pins the label git:20260927.9ecadfd, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_xdasw2qzrtean4r2)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 3, 2026 and Sep 27, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260927.9ecadfd latest | 2026-09-27 | 9ecadfd | 13,779 B | A | view · diff |
| git:20260923.832673e | 2026-09-23 | 832673e | 13,008 B | A | view · diff |
| git:20260911.37b054b | 2026-09-11 | 37b054b | 12,519 B | A | view · diff |
| git:20260906.e6ad4bd | 2026-09-06 | e6ad4bd | 11,404 B | A | view · diff |
| git:20260903.f199530 | 2026-09-03 | f199530 | 10,524 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13779 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
robsonkades/agent-skills · 3 stars · license Apache-2.0 · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_xdasw2qzrtean4r2 GET https://markdownregistry.com/api/v1/resolve?ref=robsonkades/agent-skills/false-sharing-and-contended GET https://markdownregistry.com/api/v1/blob/b2c9159a6075d42d43943ed74ebb97092b9c158eaa03f99b05f2e592f2397387
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.