@itsericwoodward@itsericwoodward.com Turns out, this is a bug in my config to cache synchronization. Nickname changes in the configuration file are just not synced to the cache at startup if the feed URL already exists in the cache. I must have fixed this typo in my config ages ago, because I don’t even recall having that spelling mistake to begin with. Yet, the cache was happily showing the erroneous nickname. Composing a reply automatically adds the mentions from the conversation participants. Everything originates from the cache, so, I successfully poissoned my replies.

KVarN: Native vLLM KV-cache quantization back end by Huawei
Article URL: https://github.com/huawei-csl/KVarN

Comments URL: https://news.ycombinator.com/item?id=48399974

Points: 10

# Comments: 2 ⌘ Read more

[$] Caching for extended attributes
Extended\
attributes (xattrs) provide a way to attach key/value metadata to
inodes—files, directories, and the like—in a filesystem. As with many
Linux filesystems, the FUSE filesystem
supports xattrs. In a filesystem-track session at the 2026 Linux Storage,\
Filesystem, Memory Management, and BPF Summit, FUSE maintainer Miklos
Szeredi led a discussion a … ⌘ Read more

Cache Aware Scheduling Shows Nice Wins for AMD Zen 5 on PostgreSQL, Valkey
Article URL: https://www.phoronix.com/review/cache-aware-scheduling-hedt

Comments URL: https://news.ycombinator.com/item?id=48320639

Points: 5

# Comments: 0 ⌘ Read more

[$] LWN.net Weekly Edition for May 28, 2026
Inside this week’s LWN.net Weekly Edition:

• Front: Dirk and Linus talk; BPF and GCC; private memory modes; BPF page-cache policies; major page faults; LLM kernel review; tiered-memory support; transparent huge pages; page mappings; Model Openness Tool.

• Briefs: Stenberg security stress; GTK PDF problems; Morton 2004 keynote; OpenBSD 7.9; Bambu’s AGPLv3 violations; Quotes; …

• [Announcements](https://lwn.net/Ar … ⌘ Read more

Cache Aware Scheduling Shows Nice Wins For AMD Zen 5 On PostgreSQL, Valkey, Network Performance
The long-in-development work on Cache Aware Scheduling looks like it will come to a head soon with it looking like Cache Aware Scheduling will land for Linux 7.2. Ahead of the upcoming merge window I ran some fresh benchmarks looking at different areas where this feature is shining. ⌘ Read more

Cache Aware Scheduling Shows Nice Wins For AMD Zen 5 On PostgreSQL, Valkey, Network Performance
The long-in-development work on Cache Aware Scheduling looks like it will come to a head soon with it looking like Cache Aware Scheduling will land for Linux 7.2. Ahead of the upcoming merge window I ran some fresh benchmarks looking at different areas where this feature is shining. ⌘ Read more

Meta’s CacheLib Sees New Release After Two Year Hiatus For Helping With High DRAM Prices
Back in 2021 Facebook open-sourced CacheLib as a new caching engine. Back in 2021 it was done to help scale services with non-volatile memory caching to offset increasing DRAM costs at the time. Now in 2026, DRAM memory prices are astronomical compared to 2021 pricing given the AI surge. And, surprisingly, Meta is out with a new CacheLib release after being absent the past two years… ⌘ Read more

DeepSeek reasonix, DeepSeek native coding agent with high caching and low cost
Article URL: https://esengine.github.io/DeepSeek-Reasonix/

Comments URL: https://news.ycombinator.com/item?id=48256953

Points: 16

# Comments: 7 ⌘ Read more

[$] Custom page-cache policies with BPF
The kernel’s page cache is charged with maintaining pages (or, more
correctly, folios) containing copies of
data from files in the filesystem; its performance has a big effect on the
performance of the system as a whole. One of the key decisions the kernel
must make is when to evict folios from the page cache. At the 2026 Linux Storage,\
Filesystem, Memory Management, and BPF Summit, Tal Zussman ran a
memory-ma … ⌘ Read more

Linux Provides Better Performance With The AMD Ryzen 9 9950X3D2 Over Windows 11
Last month with the new AMD Zen 5 “Dual Edition” 3D V-Cache CPU, the AMD Ryzen 9 9950X3D2 Dual Edition showed great performance on Linux across a range of workloads. Curious if the operating system was playing into the greater benefit of Ryzen 9 9950X3D2 versus just the workloads tested, this article is looking at both the AMD Ryzen 9 9950X3D and Ryzen 9 9950X3D2 on Microsoft Windows 11 and Ubuntu 26.04 LTS Linux across a range of … ⌘ Read more

Ce qui se cache derrière les bouchons attachés en Europe
Si quelques uns se sont réjouis à l’introduction en Europe des « bouchons solidaires » ou bouchons attachés à la bouteille, beaucoup ont trouvé cette mesure, débarquée à l’improviste, particulièrement agaçante. Après deux ans sur le marché, les grognements continuent de perdurer, alors que les avantages peinent chaque jour davantage à se montrer. Et en réalité, lorsqu’on […] ⌘ Read more

The Very Exciting Cache Aware Scheduling Looks Like It Will Land For Linux 7.2
As a very exciting development ahead of the Linux 7.2 kernel merge window opening in about one month’s time, it looks like the long-awaited Cache Aware Scheduling support will finally be merged! CONFIG_SCHED_CACHE has made it into a TIP branch with all the Cache Aware Scheduling code for helping with Linux performance on modern CPUs sporting multiple last level caches… ⌘ Read more

Security updates for Tuesday
Security updates have been issued by AlmaLinux (libpng and nginx), Debian (erlang, netatalk, and nginx), Fedora (mod_md and SDL2_image), Mageia (perl-libwww-perl, perl-HTTP-Message, perl-WWW-Mechanize-Cached, perl-File-XDG, perl-Path-Tiny, perl-YAML-Syck, postgresql15, and rclone), SUSE (agama, alloy, cacti, cloud-init, dnsmasq, emacs, firefox, glibc, go1.25, go1.26, google-cloud-sap-agent, google-guest-agent, ibus-rime, librime, imagemagick, kernel, libsndfile, nginx, ongres-scram, … ⌘ Read more

Intel’s Cache Aware Scheduling Inches Closer To Being Merged For Linux
I have been writing about the Cache Aware Scheduling work led by Intel engineers on the Linux kernel for more than a year. I’ve also tested out Cache Aware Scheduling on both Intel and AMD CPUs with the patched Linux kernel to great success. And thus very happy to see the Cache Aware Scheduling patches inching closer to the mainline Linux kernel… ⌘ Read more

Fragnesia Made Public As Latest Linux Local Privilege Escalation Vulnerability
A new Linux local privilege escalation flaw called Fragnesia has been disclosed as a Dirty Frag-like vulnerability, allowing arbitrary byte writes into the kernel page cache of read-only files through a separate ESP/XFRM logic bug. Phoronix reports: Proof of concept code for Fragnesia is already out there. There is a … ⌘ Read more

Argent, cadeaux et contrats: la part d’ombre de Villepin en plein jour
Si l’ex-premier ministre cache de moins en moins ses ambitions pour 2027, les questions autour de ses liens d’intérêts se posent de plus en plus. Épinglé pour avoir accepté deux cadeaux d’un lobbyiste de la Françafrique, il a fini par reconnaître «une erreur». Ses liens avec l’intermédiaire Alexandre Djouhri interrogent également. ⌘ Read more

New Linux ‘Dirty Frag’ Zero-Day Gives Root On All Major Distros
mrspoonsi shares a report: Dirty Frag is a vulnerability class, first discovered and reported by Hyunwoo Kim (@v4bel), that can obtain root privileges on major Linux distributions by chaining the xfrm-ESP Page-Cache Write vulnerability and the RxRPC Page-Cache Write vulnerability. Dirty Frag extends the bug class to which Dirty Pipe and Copy Fail be … ⌘ Read more

A security bug in AEAD sockets
Security analysis firm Xint has disclosed a security bug in the Linux kernel
that allows for arbitrary 4-byte writes to the page cache, and which has been
present since 2017.
The vulnerability has
been fixed in mainline kernels. A proof-of-concept script demons … ⌘ Read more

Intel Core Ultra 7 270K Plus Performance In 340+ Linux Benchmarks
Last month Intel began shipping the Intel Core Ultra 7 270K Plus “Arrow Lake Refresh” desktop processor. This is a mighty interesting processor for the $349 USD price point with more cores and a larger cache compared to the Core Ultra 7 265K and capable of delivering much of the performance of the flagship Core Ultra 9 285K Arrow Lake processor. In today’s article is a look at how well the Intel Core Ultra 7 270K Plus performs under Linux wit … ⌘ Read more

Linux 7.1 Delivers Performance Regression Fix For Sheaves
The Linux 7.1 kernel is bringing performance improvements for Sheaves, the per-CPU caching layer introduced several kernel cycles ago (Linux 6.18) for better efficiency on today’s high core count hardware. Sheaves began as an opt-in feature but since Linux 7.0 is now being used for all caches… ⌘ Read more

WQ_AFFN_CACHE_SHARD Merged For Linux 7.1: Significant Win For CPUs With Many Cores Per LLC
The workqueue changes merged today for the Linux 7.1 kernel are significant for today’s modern high-end processors where there can be many CPU cores per last level cache (LLC / L3 cache). The new WQ_AFFN_CACHE_SHARD affinity scope can reduce some contention on such systems and help achieve greater performance… ⌘ Read more

LLM-Assisted Patches For Linux 7.1 May Have Negative Impact On 32-bit Systems
Code now merged for the Linux 7.1 kernel may provide some negative performance implications for those still running modern Linux kernels on 32-bit hardware. A fundamental change can present cache line alignment and slab sizing implications for 32-bit Linux OS users but will provide for cleaner code with modern 64-bit computing… ⌘ Read more

[$] Removing read-only transparent huge pages for the page cache
Things do not always go the way kernel developers think they will. When
the kernel gained support for the creation of read-only transparent huge
pages for the page cache in 2019, the developer of that feature, Song Liu,
added a\
Kconfig file entry promising that support for writable huge
pages would arrive “in the next few release cycles”. Over six years
later, that promise is still present, but it wi … ⌘ Read more

AMD Ryzen 9 9950X3D2 To Be Priced At $899 USD
At the end of March AMD announced the Ryzen 9 9950X3D2 processor with both dies having 3D V-Cache. This 16 core processor with 206MB of total cache is quit exciting and will be on sale later this month but AMD refrained from commenting on the price until today… ⌘ Read more

Intel Posts Fourth Version Of Cache Aware Scheduling For Linux
Just over one year ago Intel Linux engineers began working on cache-aware load balancing for Linux or more commonly referred to as Cache Aware Scheduling. The functionality for helping modern Intel Xeon and AMD EPYC processors especially hasn’t yet been upstreamed to the Linux kernel but yesterday the fourth version of these patches were posted for review… ⌘ Read more

AMD Announces The Ryzen 9 9950X3D2
AMD this morning finally announced the long-rumored Ryzen 9 9950X3D2 flagship processor with 3D V-Cache for both of the CCDs… ⌘ Read more

Linux Patches Updated To Steal Tasks For Improving CPU Utilization
Huawei engineer Chen Jinghuang posted the latest request for comments (RFC) patches for stealing tasks from overloaded CPUs in the same last level cache (LLC) in order to improve overall CPU utilization with today’s large core count servers… ⌘ Read more

Détroit d’Ormuz : le levier caché de Washington
Depuis le 28 février 2026, le détroit d’Ormuz est fermé. Ce détroit, c’est 33 km de large, 20% de la consommation mondiale de pétrole et 1/5e du commerce mondial de GNL. Selon le discours officiel, le passage est verrouillé, et on nous promet la pire disruption énergétique depuis 1973. Cependant, un détail échappe à la […] ⌘ Read more

Open-Source “GreenBoost” Driver Aims To Augment NVIDIA GPUs vRAM With System RAM & NVMe To Handle Larger LLMs
An open-source, independently developed Linux kernel module called GreenBoost aims to augment the dedicated video memory on NVIDIA discrete GPUs with system memory and NVMe storage. The intent here with GreenBoost is a CUDA caching layer to more easily run larger AI models for LLMs that otherwise won’t fit solely in your graphics card’s dedicated vRAM… ⌘ Read more

Désindustrialisation : et si c’était un plan depuis 50 ans ?
Trump, c’est entendu, a vraiment plein de défauts. Il suffit de lire la presse de grand chemin pour en avoir une liste constamment remise à jour. Cependant, quand il fait quelque chose, il l’annonce clairement et ne s’en cache pas. Et si cette presse n’était pas complètement obsédée par disséquer chacun de ses défauts et […] ⌘ Read more

Intel’s Make-Or-Break 18A Process Node Debuts For Data Center With 288-Core Xeon 6+ CPU
Intel has formally unveiled its Xeon 6+ “Clearwater Forest” data-center processor with up to 288 cores, built on the company’s new Intel 18A process and using Foveros Direct packaging. The chip targets telecom, cloud, and edge-AI workloads with massive parallelism, large caches, and high-bandwidth D … ⌘ Read more

Turbostat With Linux 7.0 Can Report New L2 Cache Statistics
The Turbostat command-line utility for reporting processor frequency and idle statistics along with other useful information for AMD and Intel CPUs can now report some L2 cache stats for recent Intel CPUs beginning with Linux 7.0… ⌘ Read more

Intel Posts 2026 Update For Cache Aware Scheduling On Linux
Not in time for the current Linux 7.0 cycle but posted for another round of review is Intel’s latest work around Cache Aware Scheduling for enhancing the performance of modern CPUs with multiple cache domains. This is the first set of updates to Cache Aware Scheduling for the new year and succeed the v2 patches from early December. This work not only benefits modern Intel CPUs but our testing has shown can also provide some very nice gains too for … ⌘ Read more

Linux 7.0 Aims To Replace More Caching Code With Sheaves For “Hopefully” Improved Performance
Introduced to the mainline Linux kernel last year was “sheaves” as an opt-in per-CPU array-based caching layer. Sheaves was merged back in Linux 6.18 and while it started as an opt-in caching layer, the plan is to replace more CPU slabs / caches with sheaves. Queued up for slated introduction in the upcoming Linux 7.0 cycle is replacing more of those caches with sheaves… ⌘ Read more

DDR5-4800 vs. DDR5-6000 Performance With The AMD Ryzen 7 9850X3D In 300+ Benchmarks
With the incredible market demand around DDR5 memory and significantly elevated pricing on the more premium DDR5 memory modules, as part of the AMD Ryzen 7 9850X3D launch there’s been some communication that thanks to 2nd Gen AMD 3D V-Cache, using lower memory speeds like DDR5-4800 can be suitable without much of an impact to the gaming performance. But what about for Linux gaming? And other workloads with the Ryzen 7 9850X3D? C … ⌘ Read more

AMD Ryzen 7 9850X3D Linux Performance
Ahead of tomorrow’s official availability of the AMD Ryzen 7 9850X3D at $499 USD, today the review embargo lifted. This faster variant to the existing Ryzen 7 9800X3D has been undergoing lots of Linux benchmarking the past two weeks for seeing the performance capabilities of this fastest 8-core 3D V-Cache processor. ⌘ Read more

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AMD Announces Ryzen 7 9850X3D Pricing Of $499 USD
Back at CES AMD announced the Ryen 7 9850X3D as a faster sibling to the Ryzen 7 9800X3D. Today they have announced the suggested price for this 3D V-Cache desktop processor and confirmation of its availability starting on 29 January… ⌘ Read more

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