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The most popular blog posts about systems & performance on Hacker News. 301 posts.
This document describes a method of reading and displaying previously used framebuffers from a variety of popular graphics cards. In all 4 tested laptops the content of the VRAM was not erased upon reboot. It is also possible to show that the content of the host VRAM can be accessed from a VirtualBox guest, thereby…
A nice blog
The folks that build the NSIS Installer have released updates to mitigate a serious security bug related to DLL loading. (v2.5 and v3.0b3 include the fixes). To make a long and complicate…
rwasa is our full-featured, high performance, scalable web server designed to compete with the likes of nginx . It has been built from the ground-up with no external library dependencies entirely in x86_64 assembly language, and is the result of many years' experience with high volume web environments. In addition to…
Two months ago I have published a detailed survey of varioussecurity-related problems plaguing the Intel x86 platforms. While the picturepainted in the paper...
The Hypervisor.framework user mode virtualization API introduced in Mac OS X 10.10 (Yosemite) cannot only be used for toy projects like the hvdos DOS Emulator, but is full-featured enough to support a full virtualization solution that can for example run Linux.
R&D computing at scale
Posted by the notorious Tavis Ormandy.We’ve talked before about how we use Google scale to ...
There's a little kerfuffle going on over on HN about a newly discovered local root exploit on OS X 10.10.5 , so I thought this might be a g...
If you just want to get in touch, you can talk to me in an emailwardly fashion here .
A few weeks ago we upgraded a lot of the core infrastructure in our New York (okay, it’s really in New Jersey now – but don’t tell anyone) data center. We love being open with everything we do (including infrastructure), and really consider it one of the best job perks we have. So here’s how and why we upgrade a data…
Typical server utilization is between 10% and 50%. Google has demonstrated 90% utilization without impacting latency SLAs . Xkcd estimated that Google owns 2 million machines . If you estimate an amortized total cost of $4k per machine per year , that's $8 billion per year. With numbers like that, even small…
In the last decade, three major scripting languages embarked on project to produce a major revision to each language: Perl 6, Python 3, and...
The microservices architecture can be useful, but to know if it's suitable in your context you need to understand its costs and benefits.
Deliver modern applications with NGINX. Explore high-performance load balancing, API gateways, and web server solutions trusted by top global enterprises.
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#NodeJS : A quick optimization advice Can you spot the difference between these two files : that can explain a 50% performance gain : If you don’t, it’s normal, you try to read the code …
NOTE: This article has been superseded by my more recent one here
This blog post has been translated into Russian , Japanese , Chinese , and Chinese again . For more detail on problems with CAP, and a proposal for an alternative, please see my paper A Critique of the CAP Theorem .
A few spy tools for your operating system (other than strace!)
