向群友提问
把一个块设备直接给 qemu，在 qemu 里面 guest 和外面 host 看到的 iops 有显著不同（大概差两到三倍），可能是什么原因呢
把一个块设备直接给 qemu，在 qemu 里面 guest 和外面 host 看到的 iops 有显著不同（大概差两到三倍），可能是什么原因呢
Forwarded from Hacker News (yahnc_bot)
Typograms: A definition and renderer for ASCII diagrams https://google.github.io/typograms/
Forwarded from Phoronix News
Phoronix
Intel DOWNFALL: New Vulnerability Affecting AVX2/AVX-512 With Big Performance Implications
This Patch Tuesday brings a new and potentially painful processor speculative execution vulnerability... Downfall, or as Intel prefers to call it is GDS: Gather Data Sampling. GDS/Downfall affects the gather instruction with AVX2 and AVX-512 enabled processors. At least the latest-generation Intel CPUs are not affected but Tigerlake / Ice Lake back to Skylake is confirmed to be impacted. There is microcode mitigation available but it will be costly for AVX2/AVX-512 workloads with GATHER instructions in hot code-paths and thus widespread software exposure particularly for HPC and other compute-intensive workloads that have relied on AVX2/AVX-512 for better performance.
Intel DOWNFALL: New Vulnerability Affecting AVX2/AVX-512 With Big Performance Implications
This Patch Tuesday brings a new and potentially painful processor speculative execution vulnerability... Downfall, or as Intel prefers to call it is GDS: Gather Data Sampling. GDS/Downfall affects the gather instruction with AVX2 and AVX-512 enabled processors. At least the latest-generation Intel CPUs are not affected but Tigerlake / Ice Lake back to Skylake is confirmed to be impacted. There is microcode mitigation available but it will be costly for AVX2/AVX-512 workloads with GATHER instructions in hot code-paths and thus widespread software exposure particularly for HPC and other compute-intensive workloads that have relied on AVX2/AVX-512 for better performance.
Phoronix
Intel DOWNFALL: New Vulnerability Affecting AVX2/AVX-512 With Big Performance Implications
This Patch Tuesday brings a new and potentially painful processor speculative execution vulnerability...
Forwarded from VNKC Public Channel
https://twitter.com/cutlass_charcot/status/1665318728282636290
cutlass@C102日曜日 西"あ"23b : 雨の日の出会い
リプ全返信キャンペーン中です、お気軽にどうぞ
cutlass@C102日曜日 西"あ"23b : 雨の日の出会い
リプ全返信キャンペーン中です、お気軽にどうぞ
喵喵小喵喵
https://comsec.ethz.ch/research/microarch/inception/
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Phoronix News
Phoronix
Linux Lands Fix For AMD Zen 1 Bug That Could Leak Data After A Division By Zero
After a rather busy Patch Tuesday with the AMD Inception vulnerability and Intel Downfall going public, the Linux kernel saw a new bug fix merged today for a different…
Linux Lands Fix For AMD Zen 1 Bug That Could Leak Data After A Division By Zero
After a rather busy Patch Tuesday with the AMD Inception vulnerability and Intel Downfall going public, the Linux kernel saw a new bug fix merged today for a different…
Forwarded from 🍊 (🍊)
"...The system locks up and the owner of the system starts to seriously consider a switch to some version of BSD."
https://lwn.net/Articles/627419/
https://lwn.net/Articles/627419/
LWN.net
The 'too small to fail' memory-allocation rule
Kernel developers have long been told that, with few exceptions, attempts to allocate memory ca [...]
Forwarded from Solidot
Firefox 桌面扩展将扩大支持 Android 版本
2023-08-11 16:57 by 河流之女
Firefox 的 Android 版本目前只支持少数扩展，但未来几个月，Mozilla 将把更多扩展带到移动平台上，成为唯一一个支持开放扩展系统的主流 Android 浏览器。Mozilla 称它已经构建了在 Firefox for Android 上支持开放扩展系统的必要基础设施，包括支持多进程，意味着扩展可以运行在独立进程上。
https://blog.mozilla.org/addons/2023/08/10/prepare-your-firefox-desktop-extension-for-the-upcoming-android-release/
#Firefox
2023-08-11 16:57 by 河流之女
Firefox 的 Android 版本目前只支持少数扩展，但未来几个月，Mozilla 将把更多扩展带到移动平台上，成为唯一一个支持开放扩展系统的主流 Android 浏览器。Mozilla 称它已经构建了在 Firefox for Android 上支持开放扩展系统的必要基础设施，包括支持多进程，意味着扩展可以运行在独立进程上。
https://blog.mozilla.org/addons/2023/08/10/prepare-your-firefox-desktop-extension-for-the-upcoming-android-release/
#Firefox
👍4
Forwarded from Hacker News (yahnc_bot)
Asteroid ZTm0038 with a >3% impact probability https://newton.spacedys.com/neodys2/NEOScan/risk_page/ZTm0038/index_summary_ZTm0038.html