Daniel Lemire's blog
JSON Parsing: Intel Sapphire Rapids versus AMD Zen 4

Telegraph | source

Telegraph

JSON Parsing: Intel Sapphire Rapids versus AMD Zen 4

Intel has release a new generation of server processors (Sapphire Rapids) while the latest AMD technology (Zen 4) is now broadly available. There are extensive comparisons available. Of particular interest is the open benchmark results which assess various…

恭喜中奖的订户，祝大家新年快乐

Easton Man's Channel

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Linux 和 libc 给您

🎆 拜 🎆 年 🎆 啦 🎆

在这辞旧迎新的美好时刻：

🧨 printf 携手 fprintf, dprintf, sprintf, snprintf, vprintf, vfprintf, vdprintf, vsprintf, vsnprintf, fputc, fputs, putc, putchar, puts 祝您新的一年能大展宏图
🧨 scanf 携 sscanf, vsscanf, fscanf, vscanf, vfscanf, fgetc, fgets, getc, getchar 祝您财源广进，金银满仓，钱途无量
🧨 exit, _exit, _Exit, atexit, on_exit, quick_exit, at_quick_exit 希望您在这一年终末，能够善始善终，圆满收官
🧨 execl, execlp, execle, execv, execvp, execvpe 愿您新的一年开启新篇章，事业生活蒸蒸日上
🧨 signal, sigaction, sigvec, sigblock, sigsetmask, siggetmask, sigmask, setjmp, sigsetjmp, longjmp, siglongjmp 愿您新的一年能逢凶化吉，巧解难题
最后，alarm, sleep, usleep, nanosleep, clock_nanosleep, pause 愿您新的一年能安枕无忧，好睡眠，身体康健

🎆 祝大家新年快乐，万事如意！

今年的解谜红包如期而至

线索：
redpack2024.i686.zip

欢迎来玩！

开了个giveaway，提前祝大家龙芯龙年芯想事成

Ceph: A Journey to 1 TiB/s https://ceph.io/en/news/blog/2024/ceph-a-journey-to-1tibps/

Ceph

Ceph: A Journey to 1 TiB/s - Ceph

Ceph is an open source distributed storage system designed to evolve with data.

▓▓░░░░░░░░░░░░░░░░░░ 10%

Chips and Cheese
AMD RDNA 3.5’s LLVM Changes
#ChipAndCheese

Telegraph | source
(author: clamchowder)

Telegraph

AMD RDNA 3.5’s LLVM Changes

Integrated graphics have been a key part of AMD’s strategy ever since they bought ATI. Bringing CPU and GPU blocks together in the same chip has given AMD substantial wins, including in Microsoft’s Xbox and Sony’s Playstation. Their Van Gogh chip (found in…

Daniel Lemire's blog
How fast is rolling Karp-Rabin hashing?

Telegraph | source

Telegraph

How fast is rolling Karp-Rabin hashing?

A hash function maps values (e.g., strings) into a fixed number of strings, typically smaller than the original. It is useful to compare quickly two long strings, for example. Instead of comparing the strings, you may compare the hash values. A simple hash…

使用 RISC-V 控制平面的国产以太网交换 SoC“轩辕1030M”生产的交换机 Milk-V Vega 上架了，我和群友第一时间购买。玩了以后感觉挺灵车的，小心被创飞，下面是一篇开箱的博客。这个机子半成品味道太重，只能算轩辕 1030M 的开发板或者评估板，在家里用没关系，但在严肃的场合最好还是先别考虑了。
https://soha.moe/post/milkv-vega-unboxing.html

On the Costs of Syscalls (2021) https://gms.tf/on-the-costs-of-syscalls.html

Georg's Log

On the Costs of Syscalls

It's well known that syscalls are expensive. And that software mitigations against CPU bugs (such as Meltdown) even have made them more expensive. But how expensive are they really? To begin to answer this question I wrote a small micro-benchmark in order…