--- title: Linux 7.1 Lands High Resolution Timer "HRTIMER" Overhaul description: Linux 7.1 merges a significant overhaul of the high resolution timer (HRTIMER) subsystem, authored by Thomas Gleixner. Key improvements include better timer... canonical: https://daily.dev/posts/linux-7-1-lands-high-resolution-timer-hrtimer-overhaul-easewpkud twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Linux 7.1 Lands High Resolution Timer "HRTIMER" Overhaul | daily.dev og:description: Linux 7.1 merges a significant overhaul of the high resolution timer (HRTIMER) subsystem, authored by Thomas Gleixner. Key improvements include better timer... og:url: https://daily.dev/posts/linux-7-1-lands-high-resolution-timer-hrtimer-overhaul-easewpkud og:image: https://api.daily.dev/og/posts/eASEwPKUd.png og:image:alt: Linux 7.1 Lands High Resolution Timer "HRTIMER" Overhaul 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. # Linux 7.1 Lands High Resolution Timer "HRTIMER" Overhaul **[Phoronix](https://daily.dev/sources/phoronix)** · 3 min read · 0 upvotes · 0 comments ## Summary Linux 7.1 merges a significant overhaul of the high resolution timer (HRTIMER) subsystem, authored by Thomas Gleixner. Key improvements include better timer locality decisions, a new RB-tree variant with neighbor links to avoid costly tree walks on timer removal, deferred reprogramming of clock event devices to reduce overhead when the scheduler picks the next task, and direct TSC deadline conversion that eliminates redundant back-and-forth time conversions. The result is that an hrtick-enabled scheduler now delivers the same performance as one running without hrtick, while all other hrtimer users also benefit. The pull request additionally includes clocksource watchdog rewrites and robustness improvements. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Linux 7.1 Expected To See Nice Improvements For Reducing HRTICK Timer Overhead](https://daily.dev/posts/linux-7-1-expected-to-see-nice-improvements-for-reducing-hrtick-timer-overhead-rbf2u3mbp) · Phoronix · 0 upvotes · 0 comments - [Linux 7.2 Protects Against "Stupid Or Malicious" DoS Attempts By Arming Timers In The Past](https://daily.dev/posts/linux-7-2-protects-against-stupid-or-malicious-dos-attempts-by-arming-timers-in-the-past-eoa5qfcjx) · Phoronix · 1 upvotes · 0 comments - [Linux 7.1 Scheduler Changes May Benefit Some Workloads](https://daily.dev/posts/linux-7-1-scheduler-changes-may-benefit-some-workloads-gjorr1itb) · Phoronix · 0 upvotes · 0 comments - [Main changes, Arm, RISC-V, and MIPS architectures](https://daily.dev/posts/main-changes-arm-risc-v-and-mips-architectures-eds3j61xx) · CNX Software · 0 upvotes · 0 comments --- Tags: [#performance](https://daily.dev/tags/performance), [#linux](https://daily.dev/tags/linux) [View this post on daily.dev](https://daily.dev/posts/linux-7-1-lands-high-resolution-timer-hrtimer-overhaul-easewpkud) ```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":"Linux 7.1 Lands High Resolution Timer \"HRTIMER\" Overhaul","url":"https://daily.dev/posts/linux-7-1-lands-high-resolution-timer-hrtimer-overhaul-easewpkud","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/linux-7-1-lands-high-resolution-timer-hrtimer-overhaul-easewpkud"},"datePublished":"2026-04-18T10:43:00.112Z","dateModified":"2026-04-18T10:43:21.672Z","description":"Linux 7.1 merges a significant overhaul of the high resolution timer (HRTIMER) subsystem, authored by Thomas Gleixner. 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