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Investigating the Performance Overhead of C++ Exceptions
C++ exceptions have their place, but using an alternative is recommended for general program flow control.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 190 posts.
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Fedora 33
Today, I’m excited to share the results of the hard work of thousands of contributors to the Fedora Project: our latest release, Fedora 33, is here! This is a big release with a lot of change, but I believe all that work will also make it a comfortable one, fulfilling our goal of bringing you […]
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How the ARM32 Linux kernel decompresses
ARM traditionally uses compressed kernels. This is done for two major reasons: It saves space on the flash memory or other storage media...
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Thread-Per-Core Buffer Management for a modern storage system
Redpanda powers an Agentic Data Plane and Data Streaming platform for real-time performance, AI innovation, and simplified operations.
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Web Performance Profiling: Google.com
How is Google so fast? It’s so fast we take it for granted. It feels instant from the time you search to when results are displayed. What can we learn abou...
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Exploiting the Windows Cryptoapi Vulnerability
On Tuesday, the NSA announced they had found a critical vulnerability in the certificate validation functionality on Windows 10 and Windows Server 2016/2019. This bug allows attackers to break the validation of trust in a wide variety of contexts, such as HTTPS and code signing. Concerned? Get the important details…
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Safe-Linking – Eliminating a 20 year-old malloc() exploit primitive
Research by: Eyal Itkin Overview One of our goals for every research project we work on in Check Point Research is to get an intimate understanding of how software work: What components do they contain? Are they vulnerable? How can attackers exploit these vulnerabilities? And more importantly, how can we protect…
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Microsoft Defender ATP for Linux is now generally available
Today we are excited to announce general availability of Microsoft Defender Advanced Threat Protection (ATP) for Linux! - This initial release delivers...
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How to trigger races reliably in the Linux kernel
What's a race anyways? Most of the readers, for sure, do know what a race condition is. Let me however include short description just fo...
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Xen on Raspberry Pi 4
The Xen Project is excited to share that the Xen Hypervisor now runs on Raspberry Pi. This is an exciting step for both hobbyists and industries. Read more to learn about how Xen now runs on RPi and how to get started. Written by Stefano Stabellini and Roman Shaposhnik, originally
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ReactOS 0.4.13
ReactOS is a free, opensource reimplementation of windows
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Analyzing the Limits of Connection Scalability in Postgres
Why it’s important to improve Postgres connection scalability, plus an analysis on the limits of connection scalability today.
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Metal for IntelliJ Platform
As you may already know, Apple deprecated the OpenGL rendering library in macOS Mojave and provided the Metal framework as a replacement. Metal better reflects the shift in CPU/GPU performance that ha
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Moving BBC Online to the Cloud
The story of how the BBC website has been completely rebuilt and moved from datacentres to the cloud.
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Btrfs Coming to Fedora 33
The default filesystem will be BTRFS for Fedora 33 and onwards. Read more here about what that means for the Fedora community.
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Developing Wayland Color Management and High Dynamic Range
Wayland is still lacking proper consideration for color management & support for high dynamic range (HDR) imagery. However, a group of renegade devs has begun an effort to fix this situation.
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Amazon Elastic Container Service now supports Amazon EFS file systems
It has only been five years since Jeff wrote on this blog about the launch of the Amazon Elastic Container Service. I remember reading that post and thinking how exotic and unusual containers sounded. Fast forward just five years, and containers are an everyday part of most developers lives, but whilst customers are…
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A look back at memory models in 16-bit MS-DOS
Ways of dealing with the fractured address space.
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A Practical Guide to Watchdogs for Embedded Systems
A community and blog for embedded software makers
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Mitigations are attack surface, too
Posted by Jann Horn, Project ZeroIntroductionThis blog post discusses a bug leading to memory cor...
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Up to 4GB of Memory in WebAssembly
Thanks to recent work in Chrome and Emscripten, you can now use up to 4GB of memory in WebAssembly applications. That’s up from the previous limit of 2GB. It might seem odd that there was ever a limit - after all, no work was needed to allow people to use 512MB or 1GB of memory! - but it turns out that there are some…
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Huawei HKSP Introduces Trivially Exploitable Vulnerability in the Linux Kernel
Huawei has seemingly stepped its foot into the kernel self-protection game with the release of HKSP. Absent any threat model and riddled with weaknesses, it also introduces a trivially exploitable local root vulnerability due to a complete lack of defensive programming.
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Building resilient services at Prime Video with chaos engineering
Large-scale distributed software systems are composed of several individual sub-systems—such as CDNs, load balancers, and databases—and their interactions. These interactions sometimes have unpredictable outcomes caused by unforeseen turbulent events (for example, a network failure). These events can lead to…