--- title: Redox OS Landed Nice Performance Improvements In September description: Redox OS, the Rust-based operating system, landed several performance improvements in September 2026. Direct context switching now bypasses the scheduler's... canonical: https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Redox OS Landed Nice Performance Improvements In September | daily.dev og:description: Redox OS, the Rust-based operating system, landed several performance improvements in September 2026. Direct context switching now bypasses the scheduler's... og:url: https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw og:image: https://api.daily.dev/og/posts/hSqp6BEXw.png og:image:alt: Redox OS Landed Nice Performance Improvements In September og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Redox OS Landed Nice Performance Improvements In September **[Phoronix](https://daily.dev/sources/phoronix)** · 2 min read · 2 upvotes · 0 comments ## Summary Redox OS, the Rust-based operating system, landed several performance improvements in September 2026. Direct context switching now bypasses the scheduler's expensive BTreeMap data structure when apps invoke system services, cutting IPC latency by a reported 24% and improving small-buffer I/O by around 5%. Reduced kernel TLB usage cut TLB misses by 75%. Avoiding unnecessary AVX register saves and restores shaved off another 14% of IPC latency. Other work includes better SDL2 performance, external display hot-plugging for Intel Tiger Lake GPUs, boot fixes, an upgrade to Rust uutils 0.11, and LLVM Clang support for cross-compilation. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How did Redox OS reduce IPC latency recently? Redox OS added direct context switching that bypasses the scheduler when an application invokes a system service, avoiding the expensive BTreeMap data structure the scheduler previously used for context switching. This cut IPC latency by a reported 24% and improved I/O performance by about 5% for small buffers. Avoiding unnecessary AVX register saves and restores reduced IPC latency by another 14%. _Developers tracking Rust-based OS internals can follow performance work like this via daily.dev._ ### What performance improvements did Redox OS make to kernel TLB usage? Redox OS reduced kernel TLB usage, cutting TLB misses by 75%. This was part of a broader set of September 2026 performance changes that also included faster IPC through scheduler bypass and avoiding unneeded AVX register saves, plus improved SDL2 performance. _Anyone evaluating Redox OS internals can keep up with kernel-level changes like this on daily.dev._ ## Similar posts on daily.dev - [Rust-Written Redox OS Sees Improvements For Running On Real Hardware](https://daily.dev/posts/rust-written-redox-os-sees-improvements-for-running-on-real-hardware-kxl0txsw1) · Phoronix · 116 upvotes · 7 comments - [This Month in Redox](https://daily.dev/posts/this-month-in-redox-txywbaawn) · Lobsters · 25 upvotes · 0 comments - [Redox OS Enjoys installer Improvements, Performance Enhancements](https://daily.dev/posts/redox-os-enjoys-installer-improvements-performance-enhancements-id2vjuixz) · Phoronix · 6 upvotes · 0 comments - [Redox OS Gets Vulkan & Node.js Working On This Rust-Based Open-Source OS](https://daily.dev/posts/redox-os-gets-vulkan-node-js-working-on-this-rust-based-open-source-os-jwxqgv5su) · Phoronix · 4 upvotes · 0 comments --- Tags: [#performance](https://daily.dev/tags/performance), [#rust](https://daily.dev/tags/rust), [#kernel-development](https://daily.dev/tags/kernel-development) [View this post on daily.dev](https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Redox OS Landed Nice Performance Improvements In September","url":"https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw"},"datePublished":"2026-10-26T00:34:43.325Z","dateModified":"2026-10-26T00:35:33.205Z","description":"Redox OS, the Rust-based operating system, landed several performance improvements in September 2026. Direct context switching now bypasses the scheduler's...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c5ff6424e908e69d5939493e1f71dee0?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c5ff6424e908e69d5939493e1f71dee0?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Phoronix","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Phoronix","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/6a26ba379dd64932830aa0c9803dd7ee","url":"https://daily.dev/sources/phoronix"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"performance,rust,kernel-development","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Phoronix","item":"https://daily.dev/sources/phoronix"},{"@type":"ListItem","position":3,"name":"Redox OS Landed Nice Performance Improvements In September"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/redox-os-landed-nice-performance-improvements-in-september-hsqp6bexw#faq","mainEntity":[{"@type":"Question","name":"How did Redox OS reduce IPC latency recently?","acceptedAnswer":{"@type":"Answer","text":"Redox OS added direct context switching that bypasses the scheduler when an application invokes a system service, avoiding the expensive BTreeMap data structure the scheduler previously used for context switching. This cut IPC latency by a reported 24% and improved I/O performance by about 5% for small buffers. Avoiding unnecessary AVX register saves and restores reduced IPC latency by another 14%. Developers tracking Rust-based OS internals can follow performance work like this via daily.dev."}},{"@type":"Question","name":"What performance improvements did Redox OS make to kernel TLB usage?","acceptedAnswer":{"@type":"Answer","text":"Redox OS reduced kernel TLB usage, cutting TLB misses by 75%. This was part of a broader set of September 2026 performance changes that also included faster IPC through scheduler bypass and avoiding unneeded AVX register saves, plus improved SDL2 performance. Anyone evaluating Redox OS internals can keep up with kernel-level changes like this on daily.dev."}}]} ```