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Go Performance Tales
This entry is cross-posted on the datadog blog . If you want to learn more about Datadog or how we deal with the mountain of data we receive, check it out!
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Facebook's software architecture
I had summarized/discussed a couple papers ( Haystack , Memcache caching ) about Facebook's architecture before. Facebook uses simple arch...
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An immutable operating system
A post by August Lilleaas, published February 02, 2014.
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Linux 3.13
Summary of the changes and new features merged in the Linux kernel during the 3.13 development cycle
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How to zero a buffer
Now, we don't want to truly change the observable behaviour of our software — but fortunately the C standard has a more liberal concept of "observable" than most people. In particular, the C standard states that the observable behaviour includes accesses to volatile objects . What is a volatile object, you ask? It is…
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Amazon’s Glacier secret: BDXL?
by Robin Harris | Friday, April 25, 2014 | Backup , Cloud computing & storage | 24 comments
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Multi-Datacenter Cassandra on 32 Raspberry Pi’s
Deepening watsonx capabilities to address enterprise gen AI data needs with DataStax.
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You Got Your Web Browser in my Compiler
I recently discovered that Microsoft’s VC++ compiler loads mshtml.dll – also known as Internet Explorer. The compiler does this whenever the /analyze option (requesting static code analysis) is use…
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Modernizing “less”
I have just spent an all-nighter doing something I didn't expect to do. I've " modernized " less (1). (That link is to the changeset.) ...
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Are we shooting ourselves in the foot with stack overflows?
How-to articles about designing safe, reliable, and secure embedded systems.
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My First Unikernel
I wanted to make a simple REST service for queuing file uploads, deployable as a virtual machine. The traditional way to do this is to download a …
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68 Katy – 68000 Linux on a Solderless Breadboard
What does it take to build a little 68000-based protoboard computer, and get it running Linux? In my case, about three weeks of spare time, plenty of coffee, and a strong dose of stubborness. After banging my head against the wall with problems ranging from the inductance of pushbutton switches to memory leaks in the…
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PHP 7's new hashtable implementation
About three years ago I wrote an article analyzing the memory usage of arrays in PHP 5. As part of the work on the upcoming PHP 7, large parts of the Zend Engine have been rewritten with a focus on smaller data structures requiring fewer allocations. In this article I will provide an overview of the new hashtable…
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Game servers: UDP vs TCP
When writing networked games, the question of UDP vs TCP will eventually come up. Typically you will hear people say things like: “Unless you’re doing action games, you can use TCP̶…
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Making an embedded Linux computer
Designing and soldering a small ARM Linux board with 217 ball BGA package and 0402 passive components
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PyPy-STM: first “interesting” release
Hi all, PyPy-STM is now reaching a point where we can say it's good enough to be a GIL-less Python. (We don't guarantee there are no more...
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Update on Metro
Earlier this week, I asked our engineering leads and release managers to take the Windows Metro version of Firefox off the trains. The team is solid and did good work, ...
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Systemd redux: The end of Linux
I figured it was about time for a followup on my systemd post. I’ve been meaning to do it for a while but time hasn’t allowed.
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Why systemd?
This blog post is based on a talk I gave on 2014-05-21. For a few years now, GNU/Linux distributions have been migrating away from SysV ini...
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How fast is PDF.js?
Hi, my name is Thorben and I work at Opera Software in Oslo, not at Mozilla. So, how did I end up writing for Mozilla Hacks? Maybe you know that ...
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Myths about /dev/urandom
Randomness, entropy, and the Linux kernel.
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Please grow your buffers exponentially
If you record every heap allocation and re-allocation done by Firefox you find some interesting things. In particular, you find some sub-optimal buffer growth strategies that cause a lot of heap churn.
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Low Cost EC2 Instances With Burstable Performance
Even though the speedometer in my car maxes out at 150 MPH, I rarely drive at that speed (and the top end may be more optimistic than realistic), but it is certainly nice to have the option to do so when the time and the circumstances are right. Most of the time I am using […]