Blogmarks.net : Public marks with tag performance

Performance web » Archive du blog » Optimisation JPEG

by camel

Je vous avais rapidement parlé de pngcrush pour optimiser les images PNG, sans aucune perte de qualité. Stoyan Stefanov nous propose jpegtrans dans sa dernière présentation sur l’optimisation des images. Le principe est le même : un petit outil en ligne de commande qui optimise l’image sans aucune perte de qualité. Celui ci ne touche donc pas à la compression de l’image elle-même, mais retire toutes les méta-données embarquées dans le fichier.

performance images optimisation jpeg

Howto Install VirtualBox 1.6 in Ubuntu 8.04(Hardy Heron) including USB Support -- Ubuntu Geek

by camel

VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL). Install Virtualbox 1.6 in Ubuntu

ubuntu software howto install performance usb virtualbox virtualisation

Semiconductor

by oqdbpo & 2 others

Semiconductor make moving image works which reveal our physical world in flux; cities in motion, shifting landscapes and systems in chaos. Since 1999 UK artists Ruth Jarman and Joe Gerhardt have worked with digital animation to transcend the constraints of time, scale and natural forces; they explore the world beyond human experience, questioning our very existence.

image animation artists performance portfolio

Optimiser les performances d’un site web (Video HD) | Camille Roux

by camel & 1 other

Quand on pense à l’optimisation du temps de chargement d’un site, on pense généralement à améliorer le temps de génération des pages sur le serveur web. Hors, ce temps ne représente que 10 à 20% du temps de rendu de la page. Il existe en revanche des techniques directement applicables ayant un réel impact sur les performances. C’est pour expliquer ces différentes techniques que j’ai décidé de participer pour la troisième fois en tant que conférencier aux Intellicore Tech Talks. Comme je l’annonçais il y a quelques jours, j’ai fait cette présentation avec Nicolas Chevallier, ingénieur Polytech’Nice-Sophia, consultant Astek et créateur de Allogarage.fr.

web site serveur optimisation performance

How To Measure Linux Filesystem I/O Performance With iozone

by camel

User contributed tutorial written by Ramesh Natarajan. Following are few situations where you may be interested in performing a filesystem benchmarking. => Deploying a new application that is very read and write intensive. => Purchased a new storage system and would like to measure the performance. => Changing the RAID level and would like to measure the performance of the new RAID. => Changing the storage parameters and would like to know the performance impact of this change

linux tutorial application performance disk

Scaling Your Java EE Applications

by yatahonga

performance java

Jiffy Firefox Extension - Documentation

by Xavier Lacot & 2 others

The Jiffy Firefox Extension adds an additional panel to Firebug that provides a visual view of the Javascript time measurements captured by Jiffy-Web.

firebug performance javascript extension firefox

flv streaming with lighttpd

by camel & 2 others (via)

1.4.11 got a new module for streaming Flash movie files called mod_flv_streaming. This module allows you to seek in FLV files using the high performance infrastructure of lighttpd. The idea is simple and explained and implemented on ‘Streaming’ flv video via PHP, take two at http://www.flashcomguru.com/ But instead of streaming the file through PHP we do it in the webserver. The module expects a request for the URL which matches flv-streaming.extensions and can handle a ’?start=’ as part of the request. The information to pass into the ‘start’ parameter is extractly by the flash-player from the meta-data of the flv-files. The meta-data can be setup with flvtool2 Now I leave it to you to combine this with mod_secdownload to create a flv-streaming server for free with deep/hot linking protected movies. server.modules = ( ..., "mod_secdownload", ## optional "mod_flv_streaming", ... ) flv-streaming.extensions = ( ".flv" ) Take the flash-player from flashcomguru and adjust the URL in the player and try yourself.

php server flash free video performance file player flv setup streaming lighttpd

SMTP Performance Benchmarking

by camel (via)

To test and benchmark several common SMTP servers for Unix. This is inspired by the work done by Matthias Andree at his Postfix vs. qmail - Performance page. His information, while likely still highly relevant is based heavily around file system I/O and not overall performance of the MTA. Additionally, more MTAs and OSs will eventually be tested here.

qmail postfix performance file test smtp bench benchmarking mail

Howto: Performance Benchmarks a Web server

by vrossign & 2 others

web performance php web server apache lighthttpd benchmarks

PHP Performance Series: Maximizing Your MySQL Database - Mike Willbanks : getting into the mind of a php developer.

by damdec

In the first article of the PHP Performance Series, I focused on PHP Caching Techniques. This time I want to talk about maximizing your database. This article will deal mostly with MySQL, however, you should be able to note many of the different aspects even if you do not directly utilize MySQL.

php mysql performance

SmartSprites: CSS Sprite Generator Done Right

by greut

SmartSprites is a tool that will let you easily introduce and maintain CSS sprites in your designs. SmartSprites parses special directives you can insert into your original CSS to mark individual images to be turned into sprites. It then builds sprite images from the collected images and automatically inserts the required CSS properties to your style sheet, so that the sprites are used instead of the individual images.

sprites for the lazy

css tool sprite performance

Performance web » Archive du blog » Des sprites jusqu’à plus soif

by ghis

Optimisation de la bande passante avec l'utilisation des sprites.

web performance bande passante

RDF Store Benchmarks with DBpedia

by greut

In the course of my diploma thesis, I evaluated the performance of several RDF stores when small pieces of information are requested from a large dataset (DBpedia infoboxes plus two very small sets). The benchmark queries employ varying levels of joins and constraints.

we all love benchmarks

rdf performance triplestore benchmarks

PHP function isset()

by korbinus

Few tips and tricks about isset() in PHP

php function isset tips performance

Tools | MySQL Performance Blog

by ddelangle & 2 others

This page contains links to various tools we found helpful to use in practice. Some tools are written by us, others by third parties, yet another ones may be shipped with your operating system you just need to find they are there.

performance mysql

Tools | MySQL Performance Blog

by kasi77 & 2 others

This page contains links to various tools we found helpful to use in practice. Some tools are written by us, others by third parties, yet another ones may be shipped with your operating system you just need to find they are there.

tools mysql performance optimisation