Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 1,232 posts.
With Computex, there’s been a ton of news about Ice Lake (hereafter ICL) and the Sunny Cove core (SNC). Wikichip, Extremetech and Anandtech among many others have coverage (and there will be …
I thought as a break form the normal prose some of our readers might enjoy a short overview of the Stack Exchange Network (including Stack Overflow, Server Fault, and Super User) from a technical view:
Why it’s important to improve Postgres connection scalability, plus an analysis on the limits of connection scalability today.
A little fun for the last day of 2012: how to crash a program via division? x86’s IDIV instruction traps not only on division by zero, but also on INT_MIN / -1 (signed integer overflow).
In this blog, we discuss continuous batching, a critical systems-level optimization that improves both throughput and latency under load for LLMs.
Unikernel Profiling: Flame Graphs from dom0. This post investigates performance profiling of Unikernels, and with a proof of concept shows that with a little work a lot of observability is possible.
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In this post we'll discuss the second argument on why the epoll() is broken. The problem is best described in an LWN comment by Foom :
I occasionally do talks about curl. In these talks I often include a few slides that say something abut curl's coverage and presence on different platforms. Mostly to boast of course, but also to help explain to the audience how curl has manged to reach its ten billion installations. This is current incarnation of…
Let’s talk about the stream. The SoundCloud stream represents stuff that’s relevant to you primarily via your social graph, arranged in time order, newest-first. The atom of that data model, an event, is a simple enough thing. Timestamp User who did the thing Identifier of the thing that was done For example, At…
I have recently published a blog post that, as I had expected (actually, hoped for, as that would attract people to contribute to the “study”), generated quite some polemic on the Internet!
Backpressure is something nearly every software engineer will have to deal with at some point, and for some it’s a frequent problem. But…
At Twitter, a team had a unusual failure where corrupt data ended up in memcache. The root cause appears to have been a switch that was corrupting packets. Most packets were being dropped and the throughput was much lower than normal, but some were still making it through. The hypothesis is that occasionally the…
Explore technical topics, solutions, and resources for building with Twilio – and beyond.
Almost every programming language uses 64-bit integers on typical modern Intel machines. OCaml uses a special 63-bit representation. How does it affect OCaml?
January 31, 2025: Post updated to clarify the reduced on-demand pricing and workloads recommendations. Just a few years ago, creating a database that could support your business at any scale while providing consistent low latency was a daunting task. That changed for me in 2012 while reading Werner Vogels’ blog post…
CockroachDB 2.1 is 50x more scalable than Amazon Aurora at less than 2% of the price per tpmC. Read on to see performance benchmarks of CockroachDB 2.1, including the latest TPC-C results.
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Perf is probably the most widely used general purpose performance debugging tool on Linux. There are multiple contenders for the #2 spot, and, like perf, they're sampling profilers. Sampling profilers are great. They tend to be easy-to-use and low-overhead compared to most alternatives. However, there are large…
This post is based on the talk of the same name I gave at the Arrrrcamp conference in Ghent, Belgium on October 2nd, 2014. You can find the slides here and the video recording here .
The behavior of the Windows scheduler changed significantly in Windows 10 2004 (aka, the April 2020 version of Windows), in a way that will break a few applications, and there appears to have been …
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.
The CAP theorem is too simplistic and too widely misunderstood to be of much use for characterizing systems.
Learn common performance pitfalls and discover techniques to optimize your DISTINCT PostgreSQL queries. Read the full article on the Tiger Data blog.
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
These slides and notes were originally written to accompany a three hour Redis tutorial I gave at the NoSQL Europe conference on the 22nd of April 2010.
