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Glacier redux
by Robin Harris | Wednesday, April 30, 2014 | Architecture , Cloud computing & storage , Object storage | 14 comments
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OS X 10.9.3 Is Toxic
OS X 10.9.3 Recurring Panics
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Comparing Filesystem Performance in Virtual Machines
For years, the primary bottleneck for virtual machine based development environments with Vagrant has been filesystem performance. CPU differences are minimal and barely noticeable, and RAM only becomes an issue when many virtual machines are active.
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Scaling Asana.com
Are you interested in learning more about working on Asana's engineering team or the work they do? Read the Asana engineering blog.
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An Internet-Ready OS From Scratch in a Week – Rump Kernels on Bare Metal
The most time-consuming part of operating system development is obtaining enough drivers to enable the OS to run real applications which interact with the real world. NetBSD's rump kernels allow reducing that time to almost zero, for example for developing special-purpose operating systems for the cloud and embedded…
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Microservices
Defining the microservices architectural style by describing their nine common characteristics
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Sometimes Kill -9 Isn't Enough
If there’s one thing to know about distributed systems, it’s that they have to be designed with the expectation of failure. It’s also safe to say that most software these days is, in some form, distributed—whether it’s a database, mobile app, or enterprise SaaS. If you have two different processes talking to each…
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Porting rr to x86-64
(TL;DR: rr from git can record and replay 64-bit programs. Try it for yourself !)
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The Move from Linux to FreeBSD
About 2 months ago, I had a spare VPS at my host, Hetzner. So I decided to play with FreeBSD which was being offered for Hetzner servers and VPSes.That’s how the whole thing started. I didn’t have much problems getting the concepts because it belongs to *nix family of OSes [...]
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Why Intel is adding instructions to speed up non-volatile memory
The latest version of the Intel manual has a couple of new instructions for non-volatile storage, like SSDs . What's that about?
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Go’s runtime C to Go rewrite, by the numbers
The start of September brings a close to the Go 1.4 merge window . From now until the release in December, only bug fixes and tweaks will be accepted.
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On the Computational Complexity of MapReduce
I recently wrapped up a fun paper with my coauthors Ben Fish, Adam Lelkes, Lev Reyzin, and Gyorgy Turan in which we analyzed the computational complexity of a model of the popular MapReduce framework. Check out the preprint on the arXiv. Update: this paper is now published in the proceedings of DISC2015. As usual I’ll…
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Developing Service Oriented Architectures
Having spent the last four years rolling out a handful of service oriented architectures, some lessons are finally coming together, and this is an attempt at documenting them.
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Performance comparison of Functional C++ 11, Java 8, JavaScript and Wolfram
In a recent post , Andreas declared his love for the programming language FORTRAN. He concluded his post with the question “Can a functional...
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The C10K problem
It's time for web servers to handle ten thousand clients simultaneously, don't you think? After all, the web is a big place now.
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Building and modifying Linux Kernel with Visual Studio
This tutorial shows how to build the Linux kernel, add a small modification to it and debug the new kernel using Visual Studio with VisualKernel.
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Hidden Costs of Memory Allocation
It’s important to understand the cost of memory allocations, but this cost can be surprisingly tricky to measure. It seems reasonable to measure this cost by wrapping calls to new[] and delet…
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X86 boot sector written in C (2010)
Writing an MS-DOS-compatible boot sector in C: parsing the FAT BIOS parameter block, finding IO.SYS, and loading it via BIOS INT 13h in real mode.
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Revisiting How We Put Together Linux Systems
Posts and writings by Lennart Poettering
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What's wrong with systemd
So many weird little demands on time, mostly spinning out of the Signal groups set up to counter ICE and now being used for general community stuff.
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Massive: The asm.js Benchmark
asm.js is a subset of JavaScript that is very easy to optimize. Most often it is generated by a compiler, such as Emscripten, from C or C++ code. The result ...
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