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FoundationDB 6.0 released, featuring multi-region support
FoundationDB 6.0.15, our first major release since open sourcing FoundationDB in April, is now officially available!
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Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 458 posts.
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Running FreeBSD on OS X using xhyve, a port of bhyve
xhyve is port of bhyve to OS X. It is built on top of Hypervisor.framework in OS X 10.10 Yosemite and higher, runs entirely in userspace, and has no other dependencies.
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Intel microcode license updated to permit redistribution
Access technologies from partnerships with the community and leaders. Everything open source at Intel. We have a lot to share and a lot to learn.
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Jepsen: Dgraph 1.0.2
2019-04-10: The long fork test used in this analysis contained a bug which caused it to (in many cases) fail to identify long fork anomalies—though we did find instances of long fork using other tests. We have re-checked Dgraph 1.0.13 with a corrected checker, and its long fork tests still pass.
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Qubes Air: Generalizing the Qubes Architecture
The Qubes OS project has been around for nearly 8 years now, since its original announcement back in April 2010 (and the actual origin date can be traced back to November 11th, 2009, when an initial email introducing this project was sent within ITL internally). Over these years Qubes h...
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The cpu_features library
The latest news from Google on open source releases, major projects, events, and outreach programs for early career developers.
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Towards fearless SIMD
SIMD is a powerful performance technique, and is especially valuable in signal and image processing applications. I will be using it very extensively in my synthesizer, and also it’s increasingly used in xi-editor to optimize string comparisons and similar primitives.
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Vectorized Emulation: fuzzing at 2 trillion instructions per second
This is the introduction of a multipart series. It is to give a high level overview without really deeply diving into any individual component.
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Linux v4.15: Performance Goodies
With the Meltdown and Spectre fiascos , performance isn't a very hot topic at the moment. In fact, with Linux v4.15 released, it is one ...
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Making Windows Slower Part 2: Process Creation
Windows has long had a reputation for slow file operations and slow process creation. Have you ever wanted to make these operations even slower? This weeks’ blog post covers a technique you can use…
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How Does an Intel Processor Boot?
When we switch on a computer, it goes through a series of steps before it is able to load the operating system. In this post we will see how a typical x86 processor boots. This is a very complex an…
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Packets per Second Limitations in EC2
Part 2 in our series on PPS limitations in AWS EC2 will help your organization.
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Is sorted using SIMD instructions
Recently, I came across a function that checks whether an array is sorted, i.e. if there is no element which would be greater than its successor. Below is a sample implementation:
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Three kinds of memory leaks
So, you’ve got a program that’s using more and more over time as it runs. Probably you can immediately identify this as a likely symptom of a memory leak. But when we say “memory leak”, what do we actually mean? In my experience, apparent memory leaks divide into three broad categories, each with somewhat different…
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Nerd Sniped by BINFMT_MISC
How to script in any language thanks to rootless containers and BINFMT_MISC.
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Accelerate large-scale applications with BOLT
Highly complex services, such as those here at Facebook, have large source code bases in order to deliver a wide range of features and functionality. Even after the machine code for one of these se…
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Potential Impact of Spectre on Processors in the Power family
View, search and download security bulletin information for individual IBM product versions and releases.
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A Performance Cheat Sheet for PostgreSQL
Performance tuning is not trivial, but you can go a long way with a few basic guidelines. In this blog, we will discuss how you analyze the workload of the database, and then review a list of important configuration parameters to improve the performance of PostgreSQL.
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APFS encrypted plaintext password found in another log file
UPDATE: PLEASE HELP ME TEST At some point you just need to stop looking and be blissfully ignorant...this was not one of those days. In and update to my previously updated blog article , I have found another instance where the plaintext password was written to system logs. Thi
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Making a low level Linux debugger, part 3: our first program
This continues a series where we make a debugger and live editor for (re)creating assembly and C programs.
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