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Escaping the Safari sandbox with a kernel GPU bug
Posted by Ian BeerTL;DRAn OS X GPU driver trusted a user-supplied kernel C++ object pointer and c...
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 278 posts.
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Microservices and the First Law of Distributed Objects
In P of EAA I said "don't distribute your objects". Does this advice contradict my interest in Microservices?
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Speed memory access by arranging data to take advantage of CPU caching
We’ve been lied to. They keep showing us charts where CPU speed goes up and up every year as if Moore’s Law isn’t just a historical observation but some kind of divine right. Without lifting a finger, we software folks watch our programs magically accelerate just by virtue of new hardware.
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Algorithmic complexity attacks and libc qsort()
An algorithmic complexity attack is a denial of service attack that triggers worst case behaviour in code that is otherwise expected to perform well. The canonical example would be the widely published attacks against hash table implementations , where carefully crafted inputs made snappy \(O(1)\) operations…
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The Linux Security Circus: On GUI isolation
There certainly is one thing that most Linux users don't realize about their Linux systems... this is the lack of GUI-level isolation, and ...
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Visualising the Go garbage collector
gcvis is a simple way of visualising the operation of the garbage collector within a Go process. Here is a screenshot of it in operation. The rest of this article explores how gcvis works and how to interpret its results.
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Why threads can't fork
There is an interesting thread on the Go issue tracker about daemonizing processes. Most of the thread is not about daemonizing processes though, but more about why Go has no Fork() function which you can call directly in your code. The first time I read through it I was wondering and saying to myself: “Yeah, why is…
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Terminals Are Weird
Terminals 1 are quite weird. Most modern users assume that they can just have straightfoward keybindings. Right? To bind Ctrl+i to something, they listen for Ctrl+i in their application. If they want to bind Ctrl+Shift+i to something different, they certainly can, they just listen for Ctrl+Shift+i as well. Naturally…
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Bitcoin mining the hard way: the algorithms, protocols, and bytes
This article explains Bitcoin mining in details, right down to the hex data and network traffic. If you've ever wondered what really happe...
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Fun with Shellshock
This is great work. Though I must confess I’m more interested (and far more uneasy) about the other side of the coin — people developing projects like these involving machine learning to find and exploit the vulnerabilities in a fully automated fashion. This is related to, but not quite the same as, attempts at…
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Running ASP.NET vNext on OS X and Linux
So what is ASP.NET vNext ? Microsoft have recently released a preview of the next iteration of their ASP.NET platform. I’m not going to go into …
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Building the Firefox browser for Firefox OS
As soon as the Boot to Gecko (B2G) project was announced in July 2011 I knew it something I wanted to contribute to. I'd already been working on the idea ...
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Outage post-mortem
Dash knows your context, your team, and your work, so your team can stay organized, easily find and share knowledge, and keep projects secure, all from one place.
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Programming Modern Systems Like It Was 1984
It's not about technology for its own sake. It's about being able to implement your ideas.
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Spark Breaks Previous Large-Scale Sort Record
Read how Apache Spark sorted 100 TB of data (1 trillion records) 3X faster using 10X fewer machines in 2014.
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Recovering deleted files using only grep
Alex Clemmer is a computer programmer. Other programmers love Alex, excitedly describing him as "employed here" and "the boss's son".
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Parallelism in one line
A Better Model for Day to Day Threading Tasks
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How Not to Write a Signal Handler
This website is for sale! 741mhz.com is your first and best source for information about 741mhz. Here you will also find topics relating to issues of general interest. We hope you find what you are looking for!
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ZFS Gotchas
Things Nobody Told You About ZFS Yes, it's back. You may also notice it is now hosted on my Blogger page - just don't have time to deal w...
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A big step towards Firefox generational and compacting GC
People frequently ask me for status updates on generational GC, and I usually say I’ll tell them when something notable happens. Well, something notable just happened: exact rooting landed .