Recently I have spent time with -Skolelinux Drift AS on speeding -up a Debian Edu / Skolelinux -Lenny installation using LTSP diskless workstations, and in the -process I discovered something very surprising. The reason the KDE -menu was responding slow when using it for the first time, was mostly -due to the way KDE find application icons. I discovered that showing -the Multimedia menu would cause more than 20 000 IP packages to be -passed between the LTSP client and the NFS server. Most of these were - -NFS LOOKUP calls, resulting in a NFS3ERR_NOENT response. Because the -ping times between the client and the server were in the range 2-20 -ms, the menus would be very slow. Looking at the strace of kicker in -Lenny (or plasma-desktop i Squeeze - same problem there), I see that -the source of these NFS calls are access(2) system calls for -non-existing files. KDE can do hundreds of access(2) calls to find -one icon file. In my example, just finding the mplayer icon required -around 230 access(2) calls.
- -The KDE code seem to search for icons using a list of icon -directories, and the list of possible directories is large. In -(almost) each directory, it look for files ending in .png, .svgz, .svg -and .xpm. The result is a very slow KDE menu when /usr/ is NFS -mounted. Showing a single sub menu may result in thousands of NFS -requests. I am not the first one to discover this. I found a -KDE bug report -from 2009 about this problem, and it is still unsolved.
- -My solution to speed up the KDE menu was to create a package -kde-icon-cache that upon installation will look at all .desktop files -used to generate the KDE menu, find their icons, search the icon paths -for the file that KDE will end up finding at run time, and copying the -icon file to /var/lib/kde-icon-cache/. Finally, I add symlinks to -these icon files in one of the first directories where KDE will look -for them. This cut down the number of file accesses required to find -one icon from several hundred to less than 5, and make the KDE menu -almost instantaneous. I'm not quite sure where to make the package -publicly available, so for now it is only available on request.
- -The bug report mention that this do not only affect the KDE menu -and icon handling, but also the login process. Not quite sure how to -speed up that part without replacing NFS with for example NBD, and -that is not really an option at the moment.
- -If you got feedback on this issue, please let us know on debian-edu -(at) lists.debian.org.
+ +De siste månedene har jeg sammen med andre i NUUG jobbet med å +gjøre det enklere å få innsyn i offentlige dokumenter, og dette +inkluderer å gjøre postjournaler enklere tilgjengelig for maskinell +analyse og søk. I den forbindelse tok jeg i dag å tittet litt på +Offentlig Elektronisk Postjournal +(OEP), FAD/DIFIs fellesløsning for departementer og statlige +etater.
+ +Her er antall oppføringer pr. måned det siste året, +summert +opp ved hjelp av +en +Scraperwiki-database. Merk at denne Scraperwikien har +ytelsesproblemer pga. mengden data.
+ +MÃ¥ned | Antall |
---|---|
2011-07 | 164355 |
2011-08 | 153662 |
2011-09 | 173134 |
2011-10 | 170665 |
2011-11 | 198409 |
2011-12 | 175908 |
2012-01 | 206875 |
2012-02 | 202862 |
2012-03 | 204225 |
2012-04 | 207931 |
2012-05 | 223754 |
Det er også interessant å se hvor ofte ulike etater sender inn sine +journaloppføringer til OEP. OEP inneholder en liste med sist +innrapporteringsdato for alle som sender til OEP, og ved å se når og +hvor ofte det blir sendt inn fra etatene kan +frekvensen +beregnes. Her er bunnlista, dvs. de som leverer mer enn hver 10 +dag beregnet fra +en +Scraperwiki-database:
+ +Etat | Frekvens | Leveringer |
---|---|---|
Norges geologiske undersøkelse | 83.7527546296 | 1 |
Medietilsynet | 33.7527546296 | 1 |
Departementenes servicesenter | 23.8763773148 | 2 |
Kunnskapsdepartementet | 15.8763773148 | 2 |
Kompetansesenter for distriktsutvikling | 15.3763773148 | 2 |
Toll- og avgiftsdirektoratet | 15.3763773148 | 2 |
Fredskorpset | 12.5842515432 | 3 |
Statens legemiddelverk | 12.1881886574 | 4 |
Utlendingsnemnda | 11.5842515432 | 3 |
Politidirektoratet | 10.9175848765 | 3 |
Skattedirektoratet | 10.9175848765 | 3 |
Statens innkrevingssentral | 10.5842515432 | 3 |
Barne-, ungdoms- og familiedirektoratet | 10.2509182099 | 3 |
Kunst i offentlige rom | 10.2509182099 | 3 |
En kan beregne lignende frekvenser ved å sammenligne +journalføringsdato med publiseringsdato for hver enkelt oppføring i +OEP, men den lenken legger jeg ikke ved her for å unngå at +søkemotorroboter begynner å overbelaste Scraperwiki-databasen.
+ +Jeg har spurt Norges geologiske undersøkelse om hvorfor de leverer +så sjelden, og det kommer av at de har problemer etter oppgradering av +arkivsystemet sitt og jobber med å fikse det slik at de kan gå tilbake +til å levere hver uke. Har ikke undersøkt noen av de andre.
About two weeks ago, I was interviewed via email about -Debian Edu and Skolelinux by -Bruce Byfield in Linux Weekly News. The result was made public for -non-subscribers today. I am pleased to see liked our Linux solution -for schools. Check out his article -Debian Edu/Skolelinux: A -distribution for education if you want to learn more.
+ +Slashdot got a story about Intel planning a +TV +with face recognition to recognise the viewer, and it occurred to +me that it would be more interesting to turn it around, and do face +recognition on the TV image itself. It could let the viewer know who +is present on the screen, and perhaps look up their credibility, +company affiliation, previous appearances etc for the viewer to better +evaluate what is being said and done. That would be a feature I would +be willing to pay for.
+ +I would not be willing to pay for a TV that point a camera on my +household, like the big brother feature apparently proposed by Intel. +It is the telescreen idea fetched straight out of the book +1984 by George +Orwell.
Germany is a core area for the +
+A few days ago +I +reported how to get the support status out of Dell using an +unofficial and undocumented SOAP API, which I since have found out was +discovered +by Daniel De Marco in february. Combined with my web scraping +code for HP, Dell and IBM +from +2009, I got inspired and wrote +a +web service based on Scraperwiki to make it easy to look up the +support status and get a machine readable result back.
+ +This is what it look like at the moment when asking for the JSON +output: + +
+ ++% GET https://views.scraperwiki.com/run/computer-hardware-support-status/?format=json&vendor=Dell&servicetag=2v1xwn1 +supportstatus({"servicetag": "2v1xwn1", "warrantyend": "2013-11-24", "shipped": "2010-11-24", "scrapestamputc": "2012-06-06T20:26:56.965847", "scrapedurl": "http://143.166.84.118/services/assetservice.asmx?WSDL", "vendor": "Dell", "productid": ""}) +% +
It currently support Dell and HP, and I am hoping for help to add +support for other vendors. The python source is available on +Scraperwiki and I welcome help with adding more features.
+Jeg oppdaget nylig en +artikkel +i Adresseavisa i Trondheim som nevner FiksGataMi, og der Trondheim +kommune ser ut til å fortelle at de ikke følger forvaltningslovens +krav ved mottak av meldinger sendt inn via FiksGataMi. La derfor +nettopp inn denne kommentaren til artikkelen:
+ +
+ ++ +Her er en liten faktaoppdatering om FiksGataMi-tjenesten, da noen +ser ut til å ha misforstått hvordan den fungerer.
+ +FiksGataMi er et privat initiativ opprettet og drevet av +medlemsforeningen NUUG. FiksGataMi tar imot meldinger om feil i +offentlig infrastruktur, og sender meldingen skriftlig videre på vegne +av innmelder til aktuell aktør i det offentlige, det være seg kommune, +fylke eller vegvesenregion. Offentlig etat blir valgt ut fra +geografisk plassering og kategori valgt av innsender. Offentlige +etater er i følge forvaltningsloven pliktig å følge opp og besvare +skriftlige henvendelser, og hvis noen av mottakerne ikke gjør dette +kan en klage på lovbrudd i det offentlige. FiksGataMi fungerer dermed +som en slags epostklient for innbyggerne der kopi av innsendte +meldinger gjøres tilgjengelig og knyttes til kartplassering for enkel +gjenfinning. à sende inn nye problemrapporter via FiksGataMi er +dermed ikke avhengig av at kommunen aktivt må følge med på meldinger +hos FiksGataMi, da de får dem tilsendt på sine offisielle +epostmottakspunkter. Hvorvidt noe blir fikset og om innbyggerne er +opp til mottaker av meldingene. For Trondheim kommune er +mottaksadressen bydrift.vegdrift@trondheim.kommune.no, en adresse jeg +inntil jeg leste denne artikkelen trodde ble håndtert i henhold til +forvaltningslovens krav.
+ +Kan ellers fortelle at 57 kommuner lenker til FiksGataMi fra sine +nettsider, og at 37 % (4182 av 11266 ) av problemrapportene sendt inn +via FiksGataMi er markert som løst i løsningen. Trondheim kommune har +fått tilbud om å få rapportene levert på datamaskinlesbart format i +stedet for epost, men har ikke takket ja så langt.
+ +Vennlig hilsen Petter Reinholdtsen, en av NUUG-folkene bak FiksGataMi.no
+ +
Det høres for meg ut som om innbyggerne i Trondheim burde klage på +kommunens potensielle lovbrudd.
+Back in 2010, Mike Gabriel showed up on the Debian Edu and Skolelinux -user community, and this time I managed to get hold of Wolfgang -Schweer, a valuable contributor to the project from Germany. +mailing list. He quickly proved to be a valuable developer, and +thanks to his tireless effort we now have Kerberos integrated into the +Debian Edu +Squeeze version.
Who are you, and how do you spend your days?
-I've studied Mathematics at the university 'Ruhr-Universität' in -Bochum, Germany. Since 1981 I'm working as a teacher at the school -"Westfalen-Kolleg -Dortmund", a second chance school. Here, young adults is given -the opportunity to get further education in order to do the school -examination 'Abitur', which will allow to study at a university. This -second chance is of value for those who want a better job perspective -or failed to get a higher school examination being teens.
- -Besides teaching I was involved in developing online courses for a -blended learning project called 'abitur-online.nrw' and in some other -information technology related projects. For about ten years I've been -teacher and coordinator for the 'abitur-online' project at my -school. Being now in my early sixties, I've decided to leave school at -the end of April this year.
+My name is Mike Gabriel, I am 38 years old and live near Kiel, +Schleswig-Holstein, Germany. I live together with a wonderful partner +(Angela FuÃ) and two own children and two bonus children (contributed +by Angela).
+ +During the day I am part-time employed as a system administrator +and part-time working as an IT consultant. The consultancy work +touches free software topics wherever and whenever possible. During +the nights I am a free software developer. In the gaps I also train in +becoming an osteopath.
+ +Starting in 2010 we (Andreas Buchholz, Angela FuÃ, Mike Gabriel) +have set up a free software project in the area of Kiel that aims at +introducing free software into schools. The project's name is +"IT-Zukunft Schule" (IT future for schools). The project links IT +skills with communication skills.
How did you get in contact with the Skolelinux/Debian Edu project?
-The first information about Skolelinux must have come to my -attention years ago and somehow related to LTSP (Linux Terminal Server -Project). At school, we had set up a network at the beginning of 1997 -using Suse Linux on the desktop, replacing a Novell network. Since -2002, we used old machines from the city council of Dortmund as thin -clients (LTSP, later Ubuntu/Lessdisks) cause new hardware was out of -reach. At home I'm using Debian since years and - subscribed to the -Debian news letter - heard from time to time about Skolelinux. About -two years ago I proposed to replace the (somehow undocumented and only -known to me) system at school by a well known Debian based system: -Skolelinux.
- -Students and teachers appreciated the new system because of a -better look and feel and an enhanced access to local media on thin -clients. The possibility to alter and/or reset passwords using a GUI -was welcomed, too. Being able to do administrative tasks using a GUI -and to easily set up workstations using PXE was of very high value for -the admin teachers.
+While preparing our own customised Linux distribution for +"IT-Zukunft Schule" we were repeatedly asked if we really wanted to +reinvent the wheel. What schools really need is already available, +people said. From this impulse we started evaluating other Linux +distributions that target being used for school networks.
+ +At the end we short-listed two approaches and compared them: a +commercial Linux distribution developed by a company in Bremen, +Germany, and Skolelinux / Debian Edu. Between 12/2010 and 03/2011 we +went to several events and met people being responsible for marketing +and development of either of the distributions. Skolelinux / Debian +Edu was by far much more convincing compared to the other product that +got short-listed beforehand--across the full spectrum. What was most +attractive for me personally: the perspective of collaboration within +the developmental branch of the Debian Edu project itself.
+ +In parallel with this, we talked to many local and not-so-local +people. People teaching at schools, headmasters, politicians, data +protection experts, other IT professionals.
+ +We came to two conclusions:
+ +First, a technical conclusion: What schools need is available in +bits and pieces here and there, and none of the solutions really fit +by 100%. Any school we have seen has a very individual IT setup +whereas most of each school's requirements could mapped by a standard +IT solution. The requirement to this IT solution is flexibility and +customisability, so that individual adaptations here and there are +possible. In terms of re-distributing and rolling out such a +standardised IT system for schools (a system that is still to some +degree customisable) there is still a lot of work to do here +locally. Debian Edu / Skolelinux has been our choice as the starting +point.
+ +Second, a holistic conclusion: What schools need does not exist at +all (or we missed it so far). There are several technical solutions +for handling IT at schools that tend to make a good impression. What +has been missing completely here in Germany, though, is the enrolment +of people into using IT and teaching with IT. "IT-Zukunft Schule" +tries to provide an approach for this.
+ +Only some schools have some sort of a media concept which explains, +defines and gives guidance on how to use IT in class. Most schools in +Northern Germany do not have an IT service provider, the school's IT +equipment is managed by one or (if the school is lucky) two (admin) +teachers, most of the workload these admin teachers get done in there +spare time.
+ +We were surprised that only a very few admin teachers were +networked with colleagues from other schools. Basically, every school +here around has its individual approach of providing IT equipment to +teachers and students and the exchange of ideas has been quasi +non-existent until 2010/2011.
+ +Quite some (non-admin) teachers try to avoid using IT technology in +class as a learning medium completely. Several reasons for this +avoidance do exist.
+ +We discovered that no-one has ever taken a closer look at this +social part of IT management in schools, so far. On our quest journey +for a technical IT solution for schools, we discussed this issue with +several teachers, headmasters, politicians, other IT professionals and +they all confirmed: a holistic approach of considering IT management +at schools, an approach that includes the people in place, will be new +and probably a gain for all.
What do you see as the advantages of Skolelinux/Debian Edu?
-It's open source, easy to set up, stable and flexible due to it's -Debian base. It integrates LTSP out-of-the-box. And it is documented! -So it was a perfect choice.
- -Being open source, there are no license problems and so it's -possible to point teachers and students to programs like -OpenOffice.org, ViewYourMind (mind mapping) and The Gimp. It's of -high value to be able to adapt parts of the system to special needs of -a school and to choose where to get support for this.
+There is a list of advantages: international context, openness to +any kind of contributions, do-ocracy policy, the closeness to Debian, +the different installation scenarios possible (from stand-alone +workstation to complex multi-server sites), the transparency within +project communication, honest communication within the group of +developers, etc.
What do you see as the disadvantages of Skolelinux/Debian Edu?
-Nothing yet.
+Every coin has two sides:
+ +Technically: BTS issue +#311188, tricky upgradability of a Debian Edu main server, network +client installations on top of a plain vanilla Debian installation +should become possible sometime in the near future, one could think +about splitting the very complex package debian-edu-config into +several portions (to make it easier for new developers to +contribute).
+ +Another issue I see is that we (as Debian Edu developers) should +find out more about the network of people who do the marketing for +Debian Edu / Skolelinux. There is a very active group in Germany +promoting Skolelinux on the bigger Linux Days within Germany. Are +there other groups like that in other countries? How can we bring +these marketing people together (marketing group A with group B and +all of them with the group of Debian Edu developers)? During the last +meeting of the German Skolelinux group, I got the impression of people +there being rather disconnected from the development department of +Debian Edu / Skolelinux.
Which free software do you use daily?
-At home (Debian Sid with Gnome Desktop): Iceweasel, LibreOffice, -Mutt, Gedit, Document Viewer, Midnight Commander, flpsed (PDF -Annotator). At school (Skolelinux Lenny): Iceweasel, Gedit, -LibreOffice.
+For my daily business, I do not use commercial software at all.
+ +For normal stuff I use Iceweasel/Firefox, Libreoffice.org. For +serious text writing I prefer LaTeX. I use gimp, inkscape, scribus for +more artistic tasks. I run virtual machines in KVM and Virtualbox.
+ +I am one of the upstream developers of X2Go. In 2010 I started the +development of a Python based X2Go Client, called PyHoca-GUI. +PyHoca-GUI has brought forth a Python X2Go Client API that currently +is being integrated in Ubuntu's software center.
+ +For communications I have my own Kolab server running using Horde +as web-based groupware client. For IRC I love to use irssi, for Jabber +I have several clients that I use, mostly pidgin, though. I am also +the Debian maintainer of Coccinella, a Jabber-based interactive +whiteboard.
+ +My favourite terminal emulator is KDE's Yakuake.
Which strategy do you believe is the right one to use to get schools to use free software?
-Some time ago I thought it was enough to tell people about it. But -that doesn't seem to work quite well. Now I concentrate on those more -interested and hope to get multiplicators that way.
+Communicate, communicate, communicate. Enrol people, enrol people, +enrol people.