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Writing a NetBSD kernel module
Kernel modules are object files used to extend an operating system’s kernel functionality at run time .
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Implementing strcmp, strlen, and strstr using SSE 4.2 instructions (2008)
Created 18 years ago by Peter Kankowski Last changed 17 years ago Contributors : Dap and Adam Messinger Filed under Low-level code optimization
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Zip Files All the Way Down (2010)
A well-known scientist (some say it was Bertrand Russell) once gave a public lecture on astronomy. He described how the earth orbits around the sun and how the sun, in turn, orbits around the center of a vast collection of stars called our galaxy. At the end of the lecture, a little old lady at the back of the room…
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How long does it take to make a context switch? (2010)
That's a interesting question I'm willing to spend some of my time on. Someone at StumbleUpon emitted the hypothesis that with all the impr...
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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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The Configuration Complexity Clock
When I was a young coder, just starting out in the big scary world of enterprise software, an older, far more experienced chap gave me a ste...
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On the dangers of Intel's frequency scaling
While I was writing the post comparing the new Qualcomm server chip, Centriq, to our current stock of Intel Skylake-based Xeons, I noticed a disturbing phenomena.
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LavaRand in Production: The Nitty-Gritty Technical Details
As some of you may know, there's a wall of lava lamps in the lobby of our San Francisco office that we use for cryptography. In this post, we’re going to explore how that works in technical detail.
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Randomness 101: LavaRand in Production
As some of you may know, there's a wall of lava lamps in the lobby of our San Francisco office that we use for cryptography. In this post, we’re going to explore how that works.
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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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Summary of the 1.1 Billion Taxi Rides Benchmarks
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
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Spanner: TrueTime and external consistency
Understand Spanner's TrueTime and external consistency, ensuring globally consistent reads and writes across the distributed database.
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Modern garbage collection
A look at the Go GC strategy
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Routing & Network Namespaces
Like all Linux network interfaces, WireGuard integrates into the network namespace infrastructure. This means an administrator can have several entirely different networking subsystems and choose which interfaces live in each.
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Introducing Zero Round Trip Time Resumption (0-RTT)
Cloudflare’s mission is to help build a faster and more secure Internet. Over the last several years, the Internet Engineering Task Force (IETF) has been working on a new version of TLS, the protocol that powers the secure web.
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