--- title: FreeBSD can now boot in 25 milliseconds | daily.dev description: FreeBSD can now boot in 25 milliseconds on AWS Firecracker – but there are other new micro-VM engines around. Replacing a sort algorithm in the FreeBSD kernel... canonical: https://daily.dev/posts/freebsd-can-now-boot-in-25-milliseconds-cruf55xk4 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: FreeBSD can now boot in 25 milliseconds | daily.dev og:description: FreeBSD can now boot in 25 milliseconds on AWS Firecracker – but there are other new micro-VM engines around. Replacing a sort algorithm in the FreeBSD kernel... og:url: https://daily.dev/posts/freebsd-can-now-boot-in-25-milliseconds-cruf55xk4 og:image: https://api.daily.dev/og/posts/cRUF55xK4.png og:image:alt: FreeBSD can now boot in 25 milliseconds 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. # FreeBSD can now boot in 25 milliseconds **[The Register](https://daily.dev/sources/theregister)** · 5 min read · 0 upvotes · 0 comments ## Summary FreeBSD can now boot in 25 milliseconds on AWS Firecracker – but there are other new micro-VM engines around. Replacing a sort algorithm in the FreeBSD kernel has improved its boot speed by a factor of 100 or more. This tweak is just the latest in a long series, which he described in much more detail. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#aws](https://daily.dev/tags/aws), [#hardware](https://daily.dev/tags/hardware), [#linux](https://daily.dev/tags/linux) [View this post on daily.dev](https://daily.dev/posts/freebsd-can-now-boot-in-25-milliseconds-cruf55xk4) ```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":"FreeBSD can now boot in 25 milliseconds","url":"https://daily.dev/posts/freebsd-can-now-boot-in-25-milliseconds-cruf55xk4","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/freebsd-can-now-boot-in-25-milliseconds-cruf55xk4"},"datePublished":"2023-08-29T13:07:37.895Z","dateModified":"2026-03-15T03:43:16.542Z","description":"FreeBSD can now boot in 25 milliseconds on AWS Firecracker – but there are other new micro-VM engines around. Replacing a sort algorithm in the FreeBSD kernel...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/15538ea15c518469e1cbabbf93b17072?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/15538ea15c518469e1cbabbf93b17072?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"The Register","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":"The Register","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/66aa2113fdad463992ffcbf0e8963fda","url":"https://daily.dev/sources/theregister"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/freebsd-can-now-boot-in-25-milliseconds-cruf55xk4","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"aws,hardware,linux","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Register","item":"https://daily.dev/sources/theregister"},{"@type":"ListItem","position":3,"name":"FreeBSD can now boot in 25 milliseconds"}]} ```