3661
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,947 posts.
3662
Design Issues in LLVM IR
On the whole, LLVM has a well-designed intermediate representation (IR), which is specified in the language reference . However, there are a number of areas where design mistakes have been made. And while the LLVM project is generally open to addressing such issues, mistakes in core IR design tend to be firmly…
3663
CPU Counters on Apple Silicon: article + tool
Last time I wrote about profiling in Zig on Apple Silicon, I touched on PMU counter profiling. This time I decided to go further and create my own tool to fetch all available counters for Apple Silicon processors (M1, M2, and later). Brief explanation of PMU counters PMU (Performance Monitoring Unit) counters are…
3664
3665
Systemd through the eyes of a musl distribution maintainer
Welcome back to FOSS Fridays! This week, I’m covering a real pickle. I’m acutely aware of the flames this blog post will inspire, but I feel it is important to write nevertheless. I volunteer my ti…
3666
Why use old computers and operating systems?
On this blog, I write about the various computers I use and about the operating systems I use on them. Apart from Windows 7, which is relatively modern, these include Mac OS 10.6 Snow Leopard, which at this point is quite old, and Mac OS 9, which is practically ancient. I’d like to talk a bit about why I use such old…
3667
APFS changes in Big Sur: how Time Machine backs up to APFS
APFS adds 6 volume roles, including one which supports Time Machine backups. And per-file encryption is coming.
3668
JIT Compiling Code in 5μs
Build a copy-and-patch JIT compiler in Rust, generate ARM64 machine code, and benchmark it against an interpreter and handwritten implementation.
3669
Zig’s Io.Threaded is neat
std.Io.Threaded is one of the implementations of Zig's new Io interface that enables concurrency. This is a boring just use threads impl. I personally find it neat though --- it does this weird thing that I wanted to do for ages, that to my knowledge no one else is doing properly, and implements it better than I…
3670
Meta quickly detects silent data corruptions at scale
Silent data corruptions (SDCs), data errors that go undetected by the larger system, are a widespread problem for large-scale infrastructure systems. Left undetected, these types of corruptions can…
3671
3672
Scipio: A Thread-per-Core Crate for Rust and Linux
Glommio (pronounced glom-io or |glomjəʊ|) is a cooperative thread-per-core crate for Rust & Linux based on io_uring. It allows you to write asynchronous code that takes advantage of rust async/await, but it doesn’t use helper threads anywhere.
3673
8 Bits Are Enough for a Version Number
As was pointed out to us stable kernel maintainers last week, the overflow of the .y release number was going to happen soon, and our proposed …
3674
The Sisyphean Task of DNS Client Config on Linux
The covers a brief history of DNS on Linux systems and what steps Tailscale is taking to ensure it is configured consistently.
3675
Index, Count, Offset, Size
Wherein we make progress towards solving one of the most vexing problems of Computer Science — naming things.
3676
Power of small optimizations
In this post, I will talk about the importance of small optimizations that can provide a lot of performance improvements.
3677
Parsing JSON faster with Intel AVX-512
Many recent Intel processors benefit from a new family of instructions called AVX-512. These instructions operate over wide registers (up to 512 bits) and follow the Single instruction, multiple data (SIMD) paradigm. These new AVX-512 instructions allow you to break some speed records, such as decoding base64 data at…
3678
Available on Google Cloud: Intel Optane DC Persistent Memory
In-memory workloads continue to be the backbone of innovative data management use cases, but as demand increases, so does the need for even larger memory capacity. In July, we announced a partnership with Intel and SAP to offer GCP virtual machines supporting Intel® Optane DC™ persistent memory for SAP workloads. This…
3679
Lessons we learned when debugging a scaling problem
Get a closer look at how we investigated errors originating from scheduled jobs, and how we stumbled upon "the tyranny of the clock."
3680
GCC eBPF for Linux port has landed
This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project .
3681
Auto Recovery for Amazon EC2
An important rule when building a highly available and highly reliable system is to design for failure. In other words, your design model should assume that, as Amazon CTO Werner Vogels has said, “everything fails all the time.” Fortunately, modern data centers, networks, and servers are highly reliable, and failures…
3682
WASI Support in Go
Go 1.21 adds a new port targeting the WASI preview 1 syscall API
3683
An Intel Programmer Jumps over Wall: First Impressions of ARM SIMD Programming
(the pictured dish is apparently materials for “Buddha Jumps Over The Wall”, named for its ability to seduce away vegetarians – sadly it uses shark fin so has some ethical issues&…
3684
DragonFly BSD 4.8 released
DragonFly version 4.8 brings EFI boot support in the installer, further speed improvements in the kernel, a new NVMe driver, a new eMMC driver, and Intel video driver updates.
3685
Goliath: Non-blocking, Ruby 1.9 Web Server
There are easily half a dozen of factors you need to consider when picking an app server: the choice of the VM, implementation model, performance and memory usage, driver and library availability, community support, and so forth. In other words, it is a complex set of requirements, and no one solution is likely to…
3686
3687
How Is Data Stored?
Invariably, it involves trying to trap electrons in increasingly complicated ways.
3688
On lists, cache, algorithms, and microarchitecture
Lists are rather hardware-unfriendly data structure. However, having a closer look at why is that and what can be done to improve this can provide an interesting insight into how high-level algorithms performance is affected by the processor microarchitecture.
3689
Jepsen: RethinkDB 2.2.3 reconfiguration
In the previous Jepsen analysis of RethinkDB , we tested single-document reads, writes, and conditional writes, under network partitions and process pauses. RethinkDB did not exhibit any nonlinearizable histories in those tests. However, testing with more aggressive failure modes, on both 2.1.5 and 2.2.3, has…
3690
Consistent Hashing
Bluehost - Top rated web hosting provider - Free 1 click installs For blogs, shopping carts, and more. Get a free domain name, real NON-outsourced 24/7 support, and superior speed. web hosting provider php hosting cheap web hosting, Web hosting, domain names, front page hosting, email hosting. We offer affordable…