Assembly Hall of Shame
Assembly Hall of Shame Overview Instruction latency analysis usually focuses on performance optimization—making code run as fast as possible. Trapped/emulated/virtualized instructions may only time the trap, not the handler. Instructions must not be interruptible. rep movs, pause, etc. are disqualified.
- ▪Assembly Hall of Shame Overview Instruction latency analysis usually focuses on performance optimization—making code run as fast as possible.
- ▪Trapped/emulated/virtualized instructions may only time the trap, not the handler.
- ▪Instructions must not be interruptible. rep movs, pause, etc. are disqualified.
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Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/xoreaxeaxeax/asm-hall-of-shame |
| Publication time | Fri, 07 Aug 2026 18:01:30 +0000 |
| Retrieval time | 2026-08-07T18:40:47.699Z |
| Last seen | 2026-08-07T18:40:47.699Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | Ki1JcOTndSCX · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Assembly Hall of Shame Overview Instruction latency analysis usually focuses on performance optimization—making code run as fast as possible. The Assembly Hall of Shame takes the opposite approach: searching for the absolute floor of single-instruction performance. 🏆 Current Champions 🏆 x86: fxrstor64 Strategy: Use fxrstor64 to load 512-byte FPU/MMX/XMM state from a high-latency MMIO region in the PCIe fabric, then starve the fabric while the load is in flight — a fleet of hammer cores pounds a different high-latency MMIO register with tight 4-byte reads, saturating the PCIe root complex and endpoint with non-posted transactions, so CPU 0's 512-byte fxrstor64 must queue behind all that contending traffic.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.