Andrés Gómez<p>My <span class="h-card" translate="no"><a href="https://floss.social/@igalia" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>igalia</span></a></span> colleague Luís Henriques has just published a very interesting post about the work he has been doing lately in the Linux <a href="https://hostux.social/tags/kernel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>kernel</span></a> about <a href="https://hostux.social/tags/FUSE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FUSE</span></a> over <a href="https://hostux.social/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a>.</p><p><a href="https://luis.camandro.org/2025-06-14-fuse-over-io_uring.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">luis.camandro.org/2025-06-14-f</span><span class="invisible">use-over-io_uring.html</span></a></p>
Recherches récentes
Aucune recherche récente
Options de recherche
Disponible uniquement lorsque vous êtes connecté.
mastouille.fr est l'un des nombreux serveurs Mastodon indépendants que vous pouvez utiliser pour participer au fédiverse.
Mastouille est une instance Mastodon durable, ouverte, et hébergée en France.
Administré par :
Statistiques du serveur :
620comptes actifs
mastouille.fr: À propos · Annuaire des profils · Politique de confidentialité
Mastodon: À propos · Télécharger l’application · Raccourcis clavier · Voir le code source · v4.3.4
#io_uring
0 message · 0 participant · 0 message aujourd’hui
Marcel Waldvogel<p>All you never wanted to know about creating fast socket I/O on <a href="https://waldvogel.family/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Linux</span></a>. Unless you are a real geek.</p><p>A small, ultra-high performance publish-subscribe server doing kind of TCP <a href="https://waldvogel.family/tags/multicast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multicast</span></a> using <a href="https://waldvogel.family/tags/sendfile" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sendfile</span></a>, <a href="https://waldvogel.family/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a>, <a href="https://waldvogel.family/tags/splice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>splice</span></a>, (mapped) files, and <a href="https://waldvogel.family/tags/fallocate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fallocate</span></a> for file hole punching.</p><p>Saturating a 10 Gbps link with useful data with just 8 cores.</p><p>A beautiful writeup for anyone into fast Linux networking. Not just for <a href="https://waldvogel.family/tags/ATproto" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ATproto</span></a> </p><p>h/t <span class="h-card" translate="no"><a href="https://smnn.ch/@nohillside" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>nohillside</span></a></span> <br><a href="https://waldvogel.family/tags/PubSub" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PubSub</span></a> <a href="https://waldvogel.family/tags/Kernel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Kernel</span></a> <a href="https://waldvogel.family/tags/Hacking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Hacking</span></a> <br><a href="https://www.asayers.com/jetrelay" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">asayers.com/jetrelay</span><span class="invisible"></span></a></p>
The New Oil<p><a href="https://mastodon.thenewoil.org/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Linux</span></a> '<a href="https://mastodon.thenewoil.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a>' security blindspot allows stealthy <a href="https://mastodon.thenewoil.org/tags/rootkit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rootkit</span></a> attacks</p><p><a href="https://www.bleepingcomputer.com/news/security/linux-io-uring-security-blindspot-allows-stealthy-rootkit-attacks/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">bleepingcomputer.com/news/secu</span><span class="invisible">rity/linux-io-uring-security-blindspot-allows-stealthy-rootkit-attacks/</span></a></p><p><a href="https://mastodon.thenewoil.org/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cybersecurity</span></a> <a href="https://mastodon.thenewoil.org/tags/FOSS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FOSS</span></a> <a href="https://mastodon.thenewoil.org/tags/malware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>malware</span></a></p>
argv minus one<p>Do any operating systems other than <a href="https://mastodon.sdf.org/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Linux</span></a> (<a href="https://mastodon.sdf.org/tags/Windows" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Windows</span></a>, <a href="https://mastodon.sdf.org/tags/macOS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>macOS</span></a>, <a href="https://mastodon.sdf.org/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FreeBSD</span></a>, <a href="https://mastodon.sdf.org/tags/OpenBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OpenBSD</span></a>, etc) have an API for non-blocking file IO?</p><p>I know Linux has that in <a href="https://mastodon.sdf.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a>, which can do almost any IO operation (even fsync) in the background and tell you when it's done, but is that the only OS with such a feature?</p><p><a href="https://mastodon.sdf.org/tags/programming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>programming</span></a> <a href="https://mastodon.sdf.org/tags/async" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>async</span></a></p>
Nils Goroll 🕊️:varnishcache:<p>Does anyone happen to have any information on the relevance of UIO_FASTIOV (defined as 8 on <a href="https://fosstodon.org/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Linux</span></a>). I understand that submitting vectored io with within this limit can avoid dynamic memory allocation in the kernel, but is this relevant in any way in practice? Is it relevant with <a href="https://fosstodon.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> ?</p>
Nils Goroll 🕊️:varnishcache:<p>using <a href="https://fosstodon.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> for storage in <a href="https://fosstodon.org/tags/varnishcache" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>varnishcache</span></a> </p><p><a href="https://fosstodon.org/tags/allsystemsgo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>allsystemsgo</span></a> <a href="https://fosstodon.org/tags/ASG2024" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ASG2024</span></a> </p><p><a href="https://media.ccc.de/v/all-systems-go-2024-305-using-iouring-for-storage" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">media.ccc.de/v/all-systems-go-</span><span class="invisible">2024-305-using-iouring-for-storage</span></a></p><p>From: <span class="h-card" translate="no"><a href="https://botsin.space/@mediacccde" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>mediacccde</span></a></span><br><a href="https://botsin.space/@mediacccde/113203506819669014" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">botsin.space/@mediacccde/11320</span><span class="invisible">3506819669014</span></a></p>
Nils Goroll 🕊️:varnishcache:<p>the <a href="https://fosstodon.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> example/proxy.c code really is super helpful. thank you, <span class="h-card" translate="no"><a href="https://fosstodon.org/@axboe" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>axboe</span></a></span> !</p>
Lars Wirzenius<p>Fun: <a href="https://toot.liw.fi/tags/Rust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Rust</span></a> bindings to <a href="https://toot.liw.fi/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> using the io-uring crate can do 10 thousand NOP operations per second on my laptop.</p><p>This isn't useful, but it's the "hello, world" for me for learning about io_uring.</p>
Nils Goroll 🕊️:varnishcache:<p>HAPPY 18TH BIRTHDAY <a href="https://fosstodon.org/tags/VarnishCache" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VarnishCache</span></a> ! To celebrate this memorable occasion, we have just tagged Version 1.0.0-rc1 of <a href="https://gitlab.com/uplex/varnish/slash" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">gitlab.com/uplex/varnish/slash</span><span class="invisible"></span></a>, which contains fellow, our advanced, <a href="https://fosstodon.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> based, high performance, eventually persistent, always consistent <a href="https://fosstodon.org/tags/opensource" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>opensource</span></a> storage engine.<br>Read the full announcement: <a href="https://varnish-cache.org/lists/pipermail/varnish-announce/2024-February/000762.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">varnish-cache.org/lists/piperm</span><span class="invisible">ail/varnish-announce/2024-February/000762.html</span></a><br>And the changelog: <a href="https://gitlab.com/uplex/varnish/slash/-/blob/master/CHANGES.rst?ref_type=heads" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">gitlab.com/uplex/varnish/slash</span><span class="invisible">/-/blob/master/CHANGES.rst?ref_type=heads</span></a></p>
Chris Gioran 💔<p>I added an opcode to <a href="https://fosstodon.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> in the <a href="https://fosstodon.org/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>linux</span></a> kernel</p><p>Then I exposed it to the userspace uring library from <a href="https://fosstodon.org/tags/tokio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tokio</span></a> </p><p>And finally I wrote an application with it.</p><p>It's easier than it sounds. But I still learned a lot. Here, I wrote it up:</p><p><a href="https://radiki.dev/posts/add-zero-opcode-to-io-uring/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">radiki.dev/posts/add-zero-opco</span><span class="invisible">de-to-io-uring/</span></a></p><p>If you find this useful let me know, and I'll write more.</p><p><a href="https://fosstodon.org/tags/rust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rust</span></a> <a href="https://fosstodon.org/tags/rustlang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rustlang</span></a></p>
Nils Goroll 🕊️:varnishcache:<p>This month, SLASH/fellow <a href="https://gitlab.com/uplex/varnish/slash" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="">gitlab.com/uplex/varnish/slash</span><span class="invisible"></span></a>, our advanced, <a href="https://fosstodon.org/tags/io_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>io_uring</span></a> based, high performance, eventually persistent, always consistent <a href="https://fosstodon.org/tags/opensource" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>opensource</span></a> storage engine for <a href="https://fosstodon.org/tags/varnishcache" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>varnishcache</span></a> has received bug fixes and relevant performance improvements:<br>- reduced memory footprint<br>- improve cache lookup performance<br>- made memory allocation priorities more fine grained<br>- reduced overhead for concurrent access to disk objects<br>- improved disk space allocation</p><p>Please try it out, all feedback is welcome!</p>
Julien M.<a class="hashtag" href="https://social.alternativebit.fr/tag/infosec" rel="nofollow noopener noreferrer" target="_blank">#InfoSec</a><br><blockquote><strong>Learnings from <a class="hashtag" href="https://social.alternativebit.fr/tag/kctf" rel="nofollow noopener noreferrer" target="_blank">#kCTF</a> VRP's 42 <a class="hashtag" href="https://social.alternativebit.fr/tag/linuxkernel" rel="nofollow noopener noreferrer" target="_blank">#LinuxKernel</a> exploits submissions</strong><br>Since its inception, the program has rewarded researchers with a total of 1.8 million USD, and in the past year, there has been a clear trend: 60% of the submissions exploited the <a class="hashtag" href="https://social.alternativebit.fr/tag/io_uring" rel="nofollow noopener noreferrer" target="_blank">#io_uring</a> component of the <a class="hashtag" href="https://social.alternativebit.fr/tag/linux" rel="nofollow noopener noreferrer" target="_blank">#Linux</a> <a class="hashtag" href="https://social.alternativebit.fr/tag/kernel" rel="nofollow noopener noreferrer" target="_blank">#kernel</a> (we paid out around 1 million USD for <a class="hashtag" href="https://social.alternativebit.fr/tag/io_uring" rel="nofollow noopener noreferrer" target="_blank">#io_uring</a> alone). Furthermore, <a class="hashtag" href="https://social.alternativebit.fr/tag/io_uring" rel="nofollow noopener noreferrer" target="_blank">#io_uring</a> vulnerabilities were used in all the submissions which bypassed our mitigations.<br><br>To protect our users, we decided to limit the usage of <a class="hashtag" href="https://social.alternativebit.fr/tag/io_uring" rel="nofollow noopener noreferrer" target="_blank">#io_uring</a> in <a class="hashtag" href="https://social.alternativebit.fr/tag/google" rel="nofollow noopener noreferrer" target="_blank">#Google</a> products<br></blockquote><a href="https://security.googleblog.com/2023/06/learnings-from-kctf-vrps-42-linux.html" rel="nofollow noopener noreferrer" target="_blank">https://security.googleblog.com/2023/06/learnings-from-kctf-vrps-42-linux.html</a>
Phoronix<p>Google Limiting <a href="https://noc.social/tags/IO_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IO_uring</span></a> Use Due To Security Vulnerabilities</p><p><a href="https://www.phoronix.com/news/Google-Restricting-IO_uring" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">phoronix.com/news/Google-Restr</span><span class="invisible">icting-IO_uring</span></a></p><p>Original tweet : <a href="https://twitter.com/phoronix/status/1669650034344730626" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">twitter.com/phoronix/status/16</span><span class="invisible">69650034344730626</span></a></p>
Phoronix<p><a href="https://noc.social/tags/libuv" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>libuv</span></a> Adds <a href="https://noc.social/tags/IO_uring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IO_uring</span></a> Support For ~8x Throughput Boost</p><p><a href="https://www.phoronix.com/news/libuv-io-uring" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">phoronix.com/news/libuv-io-uri</span><span class="invisible">ng</span></a></p><p>Original tweet : <a href="https://twitter.com/phoronix/status/1648333901176135682" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">twitter.com/phoronix/status/16</span><span class="invisible">48333901176135682</span></a></p>
ExplorerFlux en direct
Mastodon est le meilleur moyen de suivre ce qui se passe.
Suivez n'importe qui à travers le fédivers et affichez tout dans un ordre chronologique. Ni algorithmes, ni publicités, ni appâts à clics en perspective.
Créer un compteSe connecterGlissez et déposez pour envoyer