LPI 202 Tutorial on DeveloperWorks: Web Services

IBM publish another Tutorial on the LPI Exam 202. This time it’s on the “making of a Web Server” (title “Web Services” is not correct, IMHO). In this tutorial (the fourth in a series of seven tutorials on exam 202 topics), David Mertz discusses how to configure and run the Apache HTTP server and the Squid proxy server, and in doing so, continues preparing you to take the Linux Professional Institute Intermediate Level Administration (LPIC-2) Exam 202. ...

April 26, 2006 Â· 1 min Â· 79 words

Filesystems serious and realistic comparison

Nemo translated (in Italian, of course) an interesting comparison between the most diffused filesystems on Linux (and not only on The Penguin): Ext2/3, Reiserfs 3, XFS, JFS. The original article was posted by hansivers on the Debian Administration Website. Conclusion? XFS rulez!!! And I’m on the same: I start to use XFS average 2 years ago… and some big partitions on my HD still demonstrate optimal performance. Good Job, SGI!

April 24, 2006 Â· 1 min Â· 70 words

detronizator.org STILL changes face / 2

Finally, I had a little amount of time to finish up my new theme. Dheme: only a name for you, right now. But I want to make it downloadable in the future. Actual version is 0.1: under heavy-development. Dheme borns with 3 focuses: eye-candy, usability, richness. Animations of Dheme are builded with the beautiful moo.fx library. Do you like it? ;)

April 24, 2006 Â· 1 min Â· 61 words

Earlier... but important anyway

The Google Summer of Code http://code.google.com/summerofcode.html Italian informations? Look Neminis.org and netminers.

April 18, 2006 Â· 1 min Â· 12 words

Linux Io Scheduler

The 2.6 Linux Kernel included selectable IO schedulers. IO Schedulers control the way the kernel commits reads and writes to disks - the intention of providing different schedulers is to allow better optimsation for different classes of workload. Without an IO scheduler, the kernel would basically just issue each request to disk in the order that it received them. This could result in massive thrashing of the disk subsystem - if one process was reading from one part of the disk, and one writing to another, it would have to seek back and forth across the disk for every operation. The schedulers main goal is to optimise disk access times. An IO scheduler can use the following techniques to improve performance: Request merging The scheduler merges adjacent requests together to reduce disk seeking Elevator The scheduler orders requests based on their physical location on the block device, and it basically tries to seek in one direction as much as possible. Prioritisation The scheduler has complete control over how it prioritises requests, and can do so in a number of ways All IO schedulers should also take into account resource starvation, to ensure requests eventually do get serviced!… ...

April 15, 2006 Â· 1 min Â· 200 words

Firefox Tweaks, Extensions and Optimizations

Suggestion. There are too much way to personalize/hack firefox: this howto introduce you at this «dangerous world»

April 15, 2006 Â· 1 min Â· 17 words

Orion: battaglia algoritmica in corso

Malgrado i tempi dedicati quasi per intero a queste elezioni, c’é chi ancora ha il tempo di pensare alle cose più divertenti. Mountain View (USA) - L’ultimo acquisto tecnologico in casa Google si chiama Orion ed è un algoritmo nato dalla mente del giovane Ori Allon, uno studente israeliano di 26 anni che studia informatica a Melbourne, in Australia. Orion, che ha già sollevato l’attenzione di Microsoft e incassato gli applausi di Bill Gates, è uno dei più promettenti sistemi di ricerca testuale sul mercato, in grado di migliorare la pertinenza dei risultati di ricerca inquadrando il sito di interesse in un network di spazi web vicini per “senso” e “argomento”. “Con questo nuovo algoritmo si è in grado di aumentare la precisione delle ricerche testuali”, dice il giovane Allon. “Orion dà modo di sapere con precisione la pertinenza della nostra ricerca perché estrapola le parole chiavi associate alla chiave di ricerca”, spiega il creatore, “così da offrire una profondità di ricerca molto più elevata”. Un esempio pratico? Una ricerca effettuata con la stringa “risorgimento italiano” dà accesso ad una lista di temi associati, come ad esempio “Garibaldi”, “Statuto Albertino”, “Cavour”. L’utente potrà accedere a questa rete semantica in modo immediato ed intuitivo, così da avere “maggiori informazioni senza dover essere esperti dei motori di ricerca”, sottolinea Allon. I risultati vengono presentati in modo tale, che ancor prima di visitare i siti di interesse l’utente possa capire se sono realmente pertinenti con quanto stava ricercando. Il giovane programmatore ha già lasciato l’Australia ed ora lavora presso gli uffici del quartiere generale californiano di Google. Prima di BigG, anche Yahoo! ed MSN avevano avviato le trattative per acquistare i diritti d’uso su Orion, sapendo che precisione e buoni risultati sono fondamentali nella competizione tra motori di ricerca. Un algoritmo innovativo, sostengono gli esperti, può determinare una posizione dominante sul mercato. ...

April 11, 2006 Â· 2 min Â· 315 words

Tiger 10.4.6 available

[Apple] → [Software Update…] Or search on that page the update for your system.

April 4, 2006 Â· 1 min Â· 14 words

Darwin on L4

Operating Systems based on Micro-Kernel seems to return fashionable, and some experimental OS releases demonstrate it: the National ICT of Australia, infact, has released a Darwin porting for L4. This is for being able to study the behaviour of that class of o.s.. This porting include XNU, the hearth of MacOSX. ...

April 4, 2006 Â· 1 min Â· 87 words

krugle demo

krugle/the search engine/ for developers/ findcode/findanswers/krugle makes it easy for developers to find source code and technical information—fast!… I subscribe the beta-testing program of this new, powerfull search engine for developers. Yesterday an email advertise me that a very interesting screencast is available, to explain the target and the features of this engine. Other than the features, the heavy usage of Ajax is very beautiful. But “bando alle ciance”: see the screencast here.

April 4, 2006 Â· 1 min Â· 73 words