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Fast Lossless Color Image Compression
In the research field of compression, the usual goal is to achieve the best possible compression rate. The best known algorithms, however, are very slow, and sometimes impractical for real-world ap…
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 148 posts.
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Write hybrid CPU/GPU programs in Haskell
What’s better than programming a GPU with a high-level, Haskell-embedded DSL (domain-specific-language)? Well, perhaps writing portab...
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FreeBSD 9.0-Release Announcement
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 9.0-RELEASE. This is the first release from the stable/9 branch, which improves on stable/8 and adds many new features. Some of the highlights:
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Line-by-line memory usage of a Python program
This website is for sale! fseoane.net is your first and best source for information about fseoane. Here you will also find topics relating to issues of general interest. We hope you find what you are looking for!
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Java Tuning in a nutshell
While delivering a training recently, I got a request to put together a JVM tuning cheat sheet. Given the 50+ parameters available on the ...
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Three years later, Mr. Moore is still letting us punt on database sharding
Three years ago, I wrote about how improvements in technology keep allowing us to punt on sharding the Basecamp database. This is still true, only more so now. We’ve grown enormously over the last three years but RAM keeps getting cheaper and FusionIO SSD’s keep getting faster. If an…
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Virtual Machines in Your Browser
Updated March 13, 2012 at 10:43PM: I have a list of limitations and known bugs toward the end. Updated March 14, 2012 at 9:30PM: I’ll be on the VMware Community Roundtable podcast at 12:00PM …
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About Gatekeeper
Today’s Mountain Lion announcement introduces an important new security feature, called Gatekeeper, in addition to the “sandboxing” feature that premiered in Lion. I’d like to talk a little bit about it, and why it’s important to all Mac users.
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Life of an instruction in LLVM
LLVM is a complex piece of software. There are several paths one may take on the quest of understanding how it works, none of which is simple. I recently had to dig in some areas of LLVM I was not previously familiar with, and this article is one of the outcomes of this quest.
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Caching in theory and practice
Dash knows your context, your team, and your work, so your team can stay organized, easily find and share knowledge, and keep projects secure, all from one place.
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How ZFS continues to be better than Btrfs.
ZFS keeps winning over btrfs on many fronts. Here's a short list that explains exactly how.
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GNU grep is 10x faster than Mac grep
That's likely all you need to do to install and make default GNU grep, which on my machine is a ~10x speedup over the grep that ships with Mac OS.
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Introducing Qubes 1.0 ("a stable and reasonably secure desktop OS")
After nearly three years of work, I have a pleasure to announce that Qubes 1.0 has finally been released! To see the installation instructio...
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PyPy: Transactional Memory (II)
Here is an update about the previous blog post about the Global Interpreter Lock (GIL). In 5 months, the point of view changed quite a bit...
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This is the mail system
This is how we tell hundreds of millions of computer users that something has gone wrong:
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High performance libraries in Java
There is an increasing number of libraries which are described as high performance and have benchmarks to back that claim up. Here is a sele...
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TCP doesn't suck, and all the proposed bufferbloat fixes are identical
: While I'm suspicious of all JIT-compiled languages, C# has always had a much better IL than java, even since version 1.0, making it easy...
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Forcing the CPU affinity can make a monothreaded process run 2-3x faster
Today, I chrooted in my system from sysresCD and I discovered that running eix-update (a gentoo portage indexing program) ran almost 3x fas...
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Speeding up HTTP with minimal protocol changes
As SPDY works its way through IETF ratification I began wondering whether it was really necessary to add a complex, binary protocol to th...
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How multi-disk failures happen
Having seen this failure mode happen a couple times now, it's time to share. Yes, Virgil, multi-disk failures DO happen during RAID rebuilds. I have pictures, so it MUST be true!First,
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532x Performance Increase for MongoDB with fractal tree indexes
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