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Linux’s Cache Aware Scheduling On AMD Ryzen 9 9950X3D 3D V-Cache
One of the many interesting Linux kernel innovations I have closely been following this year has been the proposed Cache Aware Scheduling support. I have shown the Cache Aware Scheduling performance on AMD EPYC as well as the Intel Xeon 6 Granite Rapids performance, but what about desktops? In this article is a quick look at Cache Aware Scheduling with the Ryzen 9 9950X3D… ⌘ Read more
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Page Cache Sharing Looks To Be Very Beneficial For EROFS Containers
One of the features being worked on for a while with the read-only EROFS file-system is page cache sharing. Besides EROFS being popular on some mobile/embedded devices, this open-source read-only file-system has been quite popular for container usage and there this page cache sharing functionality can provide some significant reductions in RAM usage… ⌘ Read more
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Intel’s Cache Aware Scheduling Presentation At LPC 2025
One of the exciting Intel innovations to the Linux kernel this year has been around the Cache Aware Scheduling for helping to deliver better performance on modern CPUs with multiple last level caches. The kernel patches have yet to be upstreamed but testing has shown to be quite promising for grouping tasks sharing data to the same LLC domain to help reduce cache misses and cache bouncing. Those wishing to learn more about Cache Aware Scheduling, there wa … ⌘ Read more
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Cache Aware Scheduling Raises Performance For Intel Xeon 6 Granite Rapids
Over the past year Intel engineers have worked a lot on Cache Aware Scheduling for the Linux kernel. The yet-to-be-merged functionality allows for the Linux kernel to better aggregate tasks sharing data to the same last level cache (LLC) domain to reduce cache misses and cache bouncing. The Cache Aware Scheduling development was led by Intel but helps other CPU vendors too for processors with multiple cache domains. Back in October I show … ⌘ Read more
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Turbostat Introduces New Cache Statistics, Nova Lake + Wildcat Lake Support
Turbostat is the Linux command-line utility for reporting CPU frequency / power / C-states and related performance / power management items namely for modern AMD and Intel processors. This CLI utility lives within the Linux kernel source tree and for Linux 6.19 has picked up a few new features… ⌘ Read more
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Linux 6.19 Enables Per-CPU BIO Caching By Default For Helping Performance
Last week saw the main set of block and IO_uring feature patches for the Linux 6.19 merge window but some additional block subsystem material was merged on Monday. There are various NVMe updates now merged plus enabling per-CPU BIO caching by default to help with file-system performance… ⌘ Read more
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AMD EPYC 7773X “Milan-X” Performance & Power Nearly Four Years Later
Nearly four years have passed since AMD launched their EPYC Milan-X processors with 3D V-Cache. When recently rearranging some servers in the lab and realizing the four year anniversary was coming up in March, curiosity got the best of me in wondering where the Linux performance and energy efficiency on Milan-X is now with the latest Linux software stack compared to the numbers when Milan-X launched back in March 2022. ⌘ Read more
Intel Updates Cache Aware Scheduling For Linux With Better NUMA Balancing
Intel engineer Tim Chen has sent out a second version of the proposed Cache Aware Scheduling patches for the Linux kernel to enhance the CPU performance of modern processors sporting multiple cache domains… ⌘ Read more
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Graviton5 Announced With Up To 192 Cores Per Chip, 5x Larger Cache
Amazon AWS today announced Graviton5 as their newest-generation ARM64 server processor for their EC2 cloud. Graviton5 is being promoted as offering 25% higher performance over existing Graviton4 processors… ⌘ Read more
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Google’s Vibe Coding Platform Deletes Entire Drive
A Google Antigravity user says the AI-driven “vibe coding” tool accidentally wiped his entire D: drive while trying to clear a project cache. Google says it’s investigating, but the episode adds to a growing list of AI tools behaving in ways that “would get a junior developer fired,” suggests The Register. From the report: We reached out to the user, a photographer and g … ⌘ Read more
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HQspinlock Proposal For Linux Shows Very Nice Performance Benefits For Large Servers
A Huawei engineer has sent out patches proposing HQspinlock as a Hierarchical Queued NUMA-aware spinlock for the Linux kernel. HQspinlock aims to addresss inefficiencies within the Linux kernel’s spinlock on modern NUMA-systems due to frequent and costly cross-NUMA cache-line transfers… ⌘ Read more
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