eduardofleury.com Archives: English
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21 August 2008
Improving QEdje and Qt performance with nvidia drivers.
Hey all,
You may have been following the buzz around bad 2D performance of nvidia-drivers, specially with KDE 4. Well, I found out that QEdje was running slower than it could on my machine due to the same reason.
Zack Rusin released yesterday a nice benchmark utility for Qt, QGears2, which I used to measure the effect [...]
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20 August 2008
emerge world reinstalling everything… not anymore :-)
I’m running ~x86 Gentoo here, eix-sync && emerge -Dav world every few days till something strange started happening. Portage wanted to reinstall everything, I mean, hundreds of packages to the same version as before, no new use, no new anything, just reinstall all packages for the pleasure of compiling and heating up my Macbook pro [...]
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20 August 2008
Running x11perf on Maemo (N800)
Hi all, this post is about some benchmarks we did on Nokia’s N800 device to measure the performance of XShmPutImage on this hardware.
I’ve been working on the QEdje project and, while studying possible optimizations, our team was interested in measuring whether we could benefit from using MIT’s X11 shared memory extensions. Among other tests, I [...]
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4 August 2008
KDE unresponsible after screensaver is locked for several hours.
Hi all, I’m currently using Gentoo ~x86 on a Macbook Pro and I’d been facing a really annoying bug for sometime before I could apply a workaround to it.
The bug sympthons are a very unresponsible system after leaving the screen locked for several hours, ie. all night, for instance, simply unlocking it was almost impossible. [...]
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8 April 2008
Running Canola2 plug-ins on the desktop
Hey,
A few days ago the Canola2 SDK was released allowing users to run Canola2 on their Linux desktops for plug-ins and themes development. In this post I’ll show how one can add plugins to the SDK.
What you need
When deploying plugins to Canola2 SDK one must observe three main steps:
Install plug-in code
Install plug-in theme extension (for [...]
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18 March 2008
Time for change…
After two years working for LTC at IBM Brasil I decided it was time for new challenges and accepted an offer from INdT - Instituto Nokia de Tecnologia (Nokia’s Institute of Technology) for a Researcher position.
Since March 3rd, 2008 I live and work in Recife, PE, northeast of Brazil and work in the Canola project. [...]
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13 November 2007
Termios functions, the unix terminal canonical mode and other settings.
A few days ago I was rewriting in C an old piece of script originally coded in BASH. Although the code was pretty simple, I found something that was worth sharing.
Basically I had to get a confirmation from the user (y/n) - ie. read char from the standard input - and process it [...]
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9 October 2007
New blog on air ;-)
Hi all, today this space is dedicated to promote a blog just created by someone I love My girlfriend Fabi.
Fabi, bienvenue a le monde du blogs!!!
http://fabithome.blogspot.com
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23 September 2007
AF_UNIX sockets and the abstract namespace, inter-process communication.
Hi all, today I’ll write something about sockets of the AF_UNIX family (aka as AF_LOCAL) and more specifically about the “abstract namespace” held by the Linux kernel.
Previous knowledge
Before I start, let me share what I expect you to know before reading this article, and also some references in case you are not familiar with these [...]
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28 August 2007
Bug in BOOTP servers? (ISC Dhcp and Bootp-dd2)
About two weeks ago I posted an introduction on the BOOTP protocol, today I’ll talk about a possible bug I found in current implementations. I recommend those not familiar with this protocol read my previous post here before continuing.
Abstract
My current project at the Brazilian IBM LTC (Linux Technology Center) lab is to develop the IBM [...]
