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Faster JavaScript Calls
Faster JavaScript calls by removing the arguments adaptor frame
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 553 posts.
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Performance comparison: counting words in Python, Go, C++, C, Awk, Forth, Rust
Performance comparison of counting and sorting word frequencies in various languages (Python, Go, C++, C, AWK, Forth, and Rust)
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Linux in a Pixel Shader – A RISC-V Emulator for VRChat
Linux in a Pixel Shader - A RISC-V Emulator for VRChat
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Firefox 94 to start using EGL on Linux
Hi there! This is a guest post from Robert Mader, who contributed enormous improvements to Firefox’s graphics stack on Linux. TL;DR In the upcoming Firefox 94 release we will enable the EGL b…
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Why Decentralised Applications Don’t Work
This has been on my mind for a while, and with a couple of things lately stoking my ire (the NFT resurgence, and Signal integrating MobileCoin), I’ve finally pushed myself to put it into words.
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You can't copy code with memcpy
There's more to code than just instructions.
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Debugging memory corruption: who the hell writes “2” into my stack? (2016)
Several weeks ago we received a bug report from a customer that said their game was crashing when using IL2CPP scripting backend. QA verified the bug and assigned it to me for fixing. The project was quite big (although far from the largest ones); it took 40 minutes to build on my machine. The instructions on the bug…
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Did Windows 10 slow down with each feature update?
One of the main reasons some people tend to avoid updating their PCs is that “it makes it slower”. Especially with Windows 10’s Software as a Service approach, where it gets the s…
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Spectre mitigations murder userspace performance
Robert O'Callahan. Christian. Kiwi. Software guy. All content human-authored unless otherwise noted.
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Tab Unloading in Firefox 93
Firefox will monitor available system memory and, should it become that a crash is imminent, Firefox will respond by unloading memory-heavy.
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Speeding up SQL queries by orders of magnitude using UNION
SQL's UNION operation isn't usually regarded as a way to optimize query performance, but in many cases it can be used to achieve massive improvements in speed.
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WebContainers: Run Node.js natively in the browser
Today we're excited to announce WebContainers, a new type of WebAssembly-based operating system that boots instantly and enables Node.js environments to run natively in-browser.
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Tiny Container Challenge: Building a 6kB Containerized HTTP Server
TL;DR I set out to build the smallest container image that I could that was still able to do something useful. By taking advantage of multistage builds, the scratch base image, and a tiny assembly-based HTTP server, I was able to get it down to 6.32kB!
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ClickHouse as an alternative to Elasticsearch for log storage and analysis
In 2018, I've written an article about Clickhouse, this piece of content is still pretty popular across the internet, and even was translated a few times. More than two years have passed since, and the pace of Clickhouse development is not slowing down: 800 merged PRs just during last month!
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Why mmap is faster than system calls (2019)
When I ask my colleagues why mmap is faster than system calls, the answer is inevitably “system call overhead”: the cost of crossing the…
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Dissecting the Apple M1 GPU, Part IV
After beginning a compiler for the Apple M1 GPU , the next step is to develop a graphics driver exercising the compiler. Since the last post two weeks ago, I’ve begun a Gallium driver for the M1, implementing much of the OpenGL 2.1 and ES 2.0 specifications. With the compiler and driver together, we’re now able to run…
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Arranging Invisible Icons in Quadratic Time
Near the end of January I was pointed to a twitter thread where a Windows user with a powerful machine was hitting random hangs in explorer. Lots of unscientific theories were being proposed. I don…
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An unexpected find that freed 20GB of unused index space in PostgreSQL
How to free space without dropping indexes or deleting data
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Memory access on the Apple M1 processor
When a program is mostly just accessing memory randomly, a standard cost model is to count the number of distinct random accesses. The general idea is that memory access is much slower than most other computational tasks. Furthermore, the cost model can be extended to count "nearby" memory accesses as free. That is…
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Asahi Linux for M1 Macs Progress October-November 2021
Porting Linux to Apple Silicon
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Performance Improvements in .NET 6
Take a rip-roarin' tour through hundreds of PRs worth of performance improvements for .NET 6.
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How We Ported Linux to the M1
Virtual iOS, Android, and Arm devices to speed up security testing, research, and DevSecOps for security teams, mobile pentesters, and software developers.
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Exploring Clang/LLVM optimization on programming horror
Recently, I’ve come across a not so efficient implementation of a isEven function (from r/programminghorror ).
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Half a million lines of Go
By Kevin Dangoor Back in December 2019, I first wrote about Goliath, Khan Academy’s project to migrate our ... Read more
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