Forwarded from Hacker News
gripdev.xyz
eBPF Mystery: When is IPv4 not IPv4? When it's pretending to be IPv6!
This adventures starts with a simple eBPF program to transparently redirect DNS requests on port 53 for a single program (or docker container).
To do this I used BPF_CGROUP_INET4_CONNECT on a cgroup. That lets me inspect and redirect traffic when syscall.connect…
To do this I used BPF_CGROUP_INET4_CONNECT on a cgroup. That lets me inspect and redirect traffic when syscall.connect…
Forwarded from Hacker News
Forwarded from Hacker News
Nietras
Sep 0.10.0 - 21 GB/s CSV Parsing Using SIMD on AMD 9950X 🚀
Sep 0.10.0 was released April 22nd,
2025 with optimizations
for AVX-512 capable CPUs like the AMD
9950X (Zen 5) and updated benchmarks
including the 9950X. Sep now achieves a staggering 21 GB/s on the 9950X for
the low-level CSV parsing. 🚀 Before 0.10.0,…
2025 with optimizations
for AVX-512 capable CPUs like the AMD
9950X (Zen 5) and updated benchmarks
including the 9950X. Sep now achieves a staggering 21 GB/s on the 9950X for
the low-level CSV parsing. 🚀 Before 0.10.0,…
Forwarded from Hacker News
System Administration
37signals Says Goodbye to AWS: Full S3 Migration and $10M in Projected Savings - System Administration
The company led by David Heinemeier Hansson (DHH) completes its cloud repatriation by moving 18 PB of data to its own infrastructure. AWS covers the $250,000
Forwarded from Hacker News
Forwarded from Hacker News
Tanelpoder
New Tool: lsds - List All Linux Block Devices and Settings in One Place - Tanel Poder Consulting
When dealing with disks and I/O things on Linux, you’d regularly run commands like lsblk, lsscsi, nvme list, etc. All of them tend to report a different set of information, so I ended up running multiple commands and correlating their output based on the…
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The Castle blog
Detect and crash Chromium bots with one weird trick (bots hate it!)
Disclaimer: If you're here for the holy grail of bot detection, this may not be it, unless your UX strategy involves surprise popups and your marketing strategy involves blocking Google crawlers.
We recently stumbled across a bug on the Chromium bug tracker…
We recently stumbled across a bug on the Chromium bug tracker…
Forwarded from Hacker News
Forwarded from Hacker News
Forwarded from Hacker News
Privacy Guides
Sam Altman Wants Your Eyeball
Last week, OpenAI's CEO Sam Altman announced in San Francisco that the World project he co-founded, formerly known as Worldcoin, is opening six stores across the United States, allowing users of the project's app to scan their eyeballs. This is worrisome…