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A rant about some of the nice things in the NT kernel
A blog titled Shipping Seven has gotten a lot of traffic recently for their article about Windows 7 and the MinWin kernel – namely, how they’re actually one and the same. The argument o…
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MySQL 5.7: over 1M queries/sec on a single machine
Last week, during Tomas ' keynote at MySQL Percona Live Conference in London we announced as one of "previews" of the following MySQL 5.7 release(s) -- an over 1,000,000 Query/sec result obtained with InnoDB Memcached plugin on a Read-Only workload. This article here is just to confirm the announced results without…
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Incremental Garbage Collector in PyPy
Hello everyone. We're pleased to announce that as of today, the default PyPy comes with a GC that has much smaller pauses than yesterday...
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TRESOR Runs Encryption Securely Outside RAM
TRESOR is a secure implementation of AES which is resistant against cold boot attacks. The basic idea behind this implementation is to store the secret key inside CPU registers rather than in RAM.
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No, ZFS really doesn't need an fsck tool
(This blog entry has been recovered for the sole purpose of repairing a link in Hackernews. This blog entry is otherwise hidden on the website. 2026-04-13)
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IDIV DoS (INT_MIN / -1)
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).
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Firefox OS Update Adds New Features, Performance Improvements
Just weeks after the first Firefox OS phones hit the market, an update is being made available adding new features, support for a number of new languages and significant performance ...
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Readings in distributed systems
This post is a work in progress.Inspired by a recent purchase of the Red Book, which providesa curated list of important papers around database systems, I’ve decidedto begin assembling a list of im...
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Queueing in the Linux Network Stack
Things that interest me
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Fixing Unix Filenames (2012)
This article will try to convince you that adding some limitations on legal Unix/Linux/POSIX filenames would be an improvement. Many programs already presume these limitations, the POSIX standard already permits such limitations, and many Unix/Linux filesystems already embed such limitations so it'd be better to make…
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Performance of Rust and Dart in Sudoku Solving
Introduction About two years ago I evaluated the performance of ~20 compilers and interpreters on sudoku solving, matrix multiplication, pattern matching and dictionary operations. Two years later,…
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Redis as the primary data store
Le tecnologie in tempo reale stanno trasformando il digitale. Permettono interazioni immediate e autentiche🎯 Scopri come migliorano l'esperienza utente e favoriscono il coinvolgimento.
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GCC and C vs C++ Speed, Measured
With the imminent release of gcc 4.8, GCC has finally switched to C++ as the implementation language. As usual, LWN has excellent coverage. Those with long memories will remember Linux trying to use g++ back in 1992 and retreating in horror at the larger, slower code. The main benefit was stricter typechecking…
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Future instruction set: AVX-512
Software optimization resources | E-mail subscription to this blog | www.agner.org
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Writing a full-text search engine using Bloom filters
A few minutes ago I came across a Hacker News post that detailed a method of adding search to your static site. As you probably know, adding search to a static site is a bit tricky, because you can’t just send the query to a server and have the server process it and return the results. If you want full-text search…
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PingFS
shysecurity blog
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A Memory Comparison of Light Linux Desktops
In my previous article I’ve tried to investigate the RAM memory requirements for running some of the most common light window managers and desktop environments available in the Linux world. P…
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Update on Go 1.1 crypto performance
Some time ago I integrated OpenSSL's MD5, SHA1 and RC4 functions into Go because Go's native implementations were slow. The Go team has ma...
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SSH uses four TCP segments for each character you type
Every time we press a key in an interactive SSH session, the SSH Client sends that keystroke as a TCP segment to the SSH Server. Here is a Wireshark …
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