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Testing the Windows Subsystem for Linux
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The latest blog posts to take off on Hacker News. 498 posts.
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Over the Air: Exploiting Broadcom’s Wi-Fi Stack (Part 2)
Posted by Gal Beniamini, Project ZeroIn this blog post we'll continue our journey into gaining re...
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Debugging macOS Kernel Using VirtualBox
Update: In the HN discussion, awalton mentioned you can set CPUID flags in VMWare. Simply adding cpuid.7.ebx = "-----------0--------------------" to the vmx file will disable SMAP. Late last year, I upgraded my old MBP to the 2016 model with a Skylake processor. As I was debugging a kernel exploit, it turned out that…
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Unreasonable Ineffectiveness of Machine Learning in Computer Systems Research
In 1960, the physicist Eugene Wigner wrote a famous essay titled “The Unreasonable Effectiveness of Mathematics in the Natural Sciences” in which he explored the question of why mathematics is so r…
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Does it scale? Who cares (2011)
Web developers the world over are always terminally worried about whether or not their application will scale orders of magnitude without keeling over.
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At Scale, Rare Events Aren’t Rare
I’m a connoisseur of failure. I love reading about engineering failures of all forms and, unsurprisingly, I’m particularly interested in data center faults. It’s not that I delight in engineering failures. My interest is driven by believing that the more faults we all understand, the more likely we can engineer…
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Building a scalable time-series database on PostgreSQL
We just announced the release of TimescaleDB, a new open-source time-series database optimized for fast ingest and complex queries, now available on GitHub.
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Over the Air: Exploiting Broadcom’s Wi-Fi Stack
Posted by Gal Beniamini, Project ZeroIt’s a well understood fact that platform security is ...
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Please stop writing new serialization protocols
It seems that every day, some computer monkey comes up with a new and more groovy serialization protocol. In the beginning, there was ASN.1 and XDR, and it was good. I think ASN.1 came first, and l…
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On mutex performance and WTF::Lock
One of the things I’ve been doing this quarter is removing Gecko’s dependence on NSPR locks . Gecko’s (non-recursive) mutexes and condition variables now use platform-specific constructs, rather than indirecting through NSPR. This change makes things smaller, especially on POSIX platforms, and uses no dynamic memory…
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What colour are your bits? (2004)
As of Summer 2024, my article "What Colour are your bits?" has been online 20 years, and people are still linking to it as a benchmark. It's clear that people still care about intellectual property in general and copyright in particular, and the difference, if any, between id...
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Why is my tcp not reliable? (2009)
This post is about an obscure corner of TCP network programming, a corner where almost everybody doesn’t quite get what is going on. I used to think I understood it, but found out last week that I didn’t.
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Jepsen: CockroachDB beta-20160829
CockroachDB is a distributed SQL database, loosely patterned after Google Spanner and designed for semi-synchronous networks. It speaks the PostgreSQL wire protocol , supports a reasonable dialect of SQL , and combines replication for durability with transparent scale-out sharding for large tables. Its most…
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The .NET IL Interpreter
Whilst writing a previous blog post I stumbled across the .NET Interpreter, tucked away in the source code. Although, it I’d made even the smallest amount of effort to look for it, I’d have easily found it via the GitHub ‘magic’ file search:
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Scaling your API with rate limiters
Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for businesses of all sizes.
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How Algolia Reduces Latency
Discover the tech stack used by Algolia. Explore 15 tools across 4 categories.
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Containers vs. Zones vs. Jails vs. VMs
Design differences of containers, Zones, Jails and VMs.
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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.
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Why doesn’t the clock in the taskbar display seconds? (2003)
Practical development throughout the evolution of Windows.
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APFS does not normalize Unicode filenames
“iOS HFS Normalized UNICODE names, APFS now treats all files as a bag of bytes on iOS. We are requesting that Applications developers call the correct Normalization routines to make sure the file name contains the correct representation.”
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Gryadka is not Paxos, so it's probably wrong
In the original version of this post, I claimed that gryadka , which claims to be built on top of a Paxos-backed CAS register, was incorrect by providing a “counter-example”.