Search Results: "reg"

5 July 2007

Michael Janssen: :

Yesterday was pretty much a long day of preparation and presenting. The day started with no internet, possibly for the entire island of Kos, I wasn't really every that clear on the whole of it. Apparently there are 2 underwater lines coming to Kos island and both had been severed or put out of service by someone. This was a bad thing, because I had intended to finish some final experiments and do some statistics on results, and Excel wasn't working. I suspect it is because I hadn't installed the updating tool of Office 2004 for Mac. Anyway I could do what I needed to do with R or Gnumeric, but they were both not installed yet. No internet = no new applications.

I finished the experiments and data gathering and the internet came back on just in time for me to download Gnumeric and get some of the stats working correctly. The final presentation didn't change that much, only changing on one slide and adding one small table, but the added result was significant enough to justify all of the work that it entailed. Indeed, it proved that the entire premise of the paper and simulation was valid. That made me feel all warm and fuzzy inside.

The talk was at 3:30, the first in a session which was mostly unrelated papers. I don't feel as bad because many of the other papers were kind of a hodge-podge as well, and we were probably all placed in the session because we didn't really fit anywhere else. I met a nice researcher who was chairing the session because the actual chair was presenting in another session (something we had worked out with software in the ICRA2006 schedule, but apparently wasn't taken into account here). The actual presentation went well, and Nikos lent me his laser pointer which added a little to the presentation I believe. Nikos said the talk was good, but I also got a comment that it was well-presented later in the day from a unrelated researcher. I was so-so about the presentation until I got the unsolicited comment.

After the talk I called up Diana on Skype and chatted for a while, but the network was too flaky at the conference, so she called my cell phone. Using Skype is one of the things that I have done more in this trip than I have done before ever. It is really a wonderful program and network for people who are far away from each other, and it actually has much more impact when you consider the costs of calling home with other methods. I estimate I saved about $200 in just three days of Skype calling instead of regular calling, even with calling to cell phones in the US every once in a while, and with Diana calling my Hellenic cell phone when my network was flaky as well. It is much more of a disruptive technology in the non-US world where every call isn't already paid for.

The banquet was next. Usually I don't like going to banquets, but this was set up different than the normal ones that accompany these conferences. Instead of a large service crew bringing out fancy food to a large set of tables, it was setup in a buffet with a large selection of Greek food so you could pick and choose your favorites and even go back for more food if you liked. I ended up trying a large variety of foods and discovering some new tastes that I hadn't had before. It was throughly enjoyable especially when listening to the others at my table of which three or four were Greek.

Then it was back to the hotel by bus, and an early bedtime in order to stock up on sleep for the long hours in the next day. Today I plan on just relaxing, sleeping a bit when I get tired, and maybe trying out some local snacks. I've already arranged for a Taxi. The last installment will be written from the Athens airport tomorrow.

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Cameron Dale: Simulating DebTorrent

I've been spending some time on the #bittorrent channel on Freenode, to see if I could get any good information from other bittorrent client developers. After some poor initial contact, I did get some good suggestions, as well as some tidbits of information I wasn't aware of. One of the tidbits was that most of the bittorrent client developers frowned on the use of selective downloading for torrents, to the point where some refuse to implement it in their clients (apparently the latest mainline client doesn't even have it, though I haven't checked due to license issues). This concerned me, as the DebTorrent client I'm working on will rely heavily on selective downloading to only download packages to be installed by the user. It's not clear to me that it would be an issue though. I'm sure it will make it more difficult to find a rare package in a large swarm of peers, but that's to be expected, and is nicely solved by using an HTTP download from a backup mirror. This backup downloading could become extreme though, making the bittorrent-like download (peer-to-peer) mostly just an HTTP download (client-server). To see if it will be a problem, I conducted a simulation of different sized swarms to determine the amount of unnecessary HTTP downloading that will occur. First, some assumptions to make the simulation easier: With these assumptions, the simulation becomes quite simple. I used the popcon data to assign packages appropriately to the N peers. The peers download their assigned packages from the C previous peers, if possible, or otherwise by HTTP. I ran this multiple times, varying N and C, and calculating each time how much was downloaded through the debtorrent protocol, and how much through HTTP. debtorrent wasted.png This graph shows the percentage of the total download that used HTTP from a mirror. The optimal line shows the minimum possible (i.e. all peers are connected), which corresponds to only one copy (the first) of every package being downloaded using HTTP. This verifies my previous thinking, which is that fracturing the download population into multiple small swarms results in lots of inefficiencies, and lots of HTTP downloading. All efforts will need to be taken to keep the downloading populations together. (This is especially difficult for unstable, when a new swarm could be created twice a day due to archive updates.) Swarms of 1,000 peers or more seem to be sufficient to minimize the HTTP downloading. debtorrent unnecessary.png This graph shows the amount of unnecessary HTTP downloading that occurred, which is just the difference of each line from the optimal one in the previous plot. This shows the danger of selective downloading, as all of this unnecessary HTTP downloading occurs because the swarm is too big to find peers that have the desired package (they do exist). Fortunately, this unnecessary downloading seems to approach a maximum as the swarm size increases. For the large swarm sizes needed to make the downloading efficient, and assuming a reasonable number of connections of 100 (bittorrent defaults to maintaining at least 40, and large swarms usually means a large number of connections), we can expect to be using HTTP for about 4% of the download. This number is surprisingly low due to the popularity distribution of packages (only rare ones are hard to find, but they aren't downloaded very often). I think 4% is manageable in our situation, given that there is a backup method to find the rare packages, though it does show the need to have that backup method available. This is probably more of a problem for regular bittorrent clients, in which there is no backup method.

Russell Coker: Fragmenting Information about Jobs

A comment on my previous post about my Linux Jobs Blog suggested that I shouldn’t fragment the information. However I believe that fragmenting the information is ideal due to the ability of RSS syndication to drive the cost of coalescing the information to almost zero! Currently there is a Linux job web site run by Linux Australia. It doesn’t have many adverts and isn’t even linked from the main Linux Australia web site. I believe that we can do better for the people who want Linux jobs and the people who have such jobs to advertise. If you have a central site the jobs have to be moderated (which takes work and delays listing), the larger the area that the site covers the greater the work is to do this. The solution is to have a distributed system with different people running listings for various regions and a syndication service to aggregate them. To start this I have created a blog which will have categories for the states and territories of Australia. Someone who is only interested in one region can visit the category for that region. Then recruiting agencies and companies which regularly hire Linux people can start their own RSS feeds to be syndicated in a planet instance for each state and territory. This gives a faster and more efficient response (adverts will appear quickly, can be changed or removed at any time, and less effort for moderation. I expect that recruiting agencies will occasionally post off-topic entries - but when their feed gets removed from the Planet installation they will probably make a commitment to do the right thing in future. Planet installations can syndicate other Planet installations, so we can easily have a Linux jobs Planet for Australia (possibly run by Linux Australia) that syndicates the feeds from each state and territory. In the long term I think that the best way of running this is to have Linux Australia run the central Planet instance and a LUG in each region run the local site. I started running it myself because I didn’t get a positive response when suggesting it to the relevant people in Linux Australia and LUV. That didn’t deter me, so I decided to set it up myself. If the idea takes off and if Linux Australia and the LUGs want to take it over I’ll be happy to use HTTP redirects to send the traffic to them - and help them with the sys-admin work if asked. Also there is nothing specific to Australia in this idea. I am only interested in Australia because if I was to attempt to do it in a larger area (such as the EU) then I could spend all my time on it without gaining a critical mass in any region. If you are interested in running this in your region then you need to set up a blog (for adverts that are sent to you via email) and a Planet installation that feeds from your blog and any other Linux job advert blogs in your region. If your country doesn’t already have a central Planet for jobs then creating a separate Planet installation for your country would be a good idea too. I will be happy to run a Planet installation for world-wide Linux job adverts (at least until I can convince an organization such as Linux International to run it) if this idea takes off in other countries. Some people have asked what the benefit of a Planet is over a mailing list. You have to subscribe to a mailing list while with a Planet you can immediately visit it if you suddenly decide to find a new job. Subscribing to mailing lists for jobs from all countries would never work, but visiting a Planet for Linux jobs world-wide and then visiting a sub-planet for regional jobs would be quick and easy.

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MJ Ray: New (or new style) memberships and blog groups

I was accepted as ODP Editor: slef for the Weston-super-Mare Business and Economy listings a while ago, but I forgot to mention it here until now. I've just done a bit of basic tidying there so far and I'm finding my feet. ODP seems rather more structured and process-y than WWWVL ever was. I'm not sure whether that's good or not. I've also gained a LinkedIn Profile: MJ Ray after an invitation (and real email) from Richard Smedley of M6-IT, if that interests anyone. LinkedIn seems to work even without Javascript (ignoring the odd layout bug), but it really seems to get much slower in the English afternoons - America waking up? I've done a bit of CSS-tidying on my main site, my debian site, and OtherWayUp - I'm also looking to launch new groups on OtherWayUp. If you have a blog from or about Somerset or Cooperatives that you'd like to appear there, please leave me a comment or email.

Russell Coker: The War Was About Oil!

They admit the truth at last: “We need to ensure, notwithstanding the significant natural resources that our country has been blessed with, that we are able to access the energy requirements in our region and throughout the world” said Brendan Nelson (Australian defence minister). John Howard isn’t admitting it yet, he’s sticking to his lie from 2003 that Iraq had Weapons of Mass Destruction.

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MJ Ray: More on Tardorrists

Kevin Mark commented:
"I see--Redarded Terrorist--ok. So this Gareth fellow is making a comparison with smarter, more intelligent terrorist that was the IRA. Which kind of says that everyone should be far less afraid of the current crop of folks and yet the media, as it does so well, inflates their dangerousness for the sake of ... well, beats me. Oh, maybe it help Tony get a job ;-) If the IRA came to the US, what color (or is that colour) code would their activities get on our terror scale as opposed to these Tardorrists?"
How about Emerald Green? More seriously, I think it's entirely fair to suggest we should fear this lot less than the often-USian-funded Provisional IRA, or local groups like animal liberationists. Those didn't just attack the big cities - it was everywhere, an attempt at terrorism. I lived about three miles outside Milton Keynes, then a fairly small midlands city, which was firebombed by both those groups. Ultimately, it didn't work. Most people weren't terrified. We carried on regardless. The government may be over-hyping this threat to ride in a new load of "expensive and ineffective" Security Theatre measures, like ID cards. Some media is sceptical, but the Murdoch-run media is mostly complicit, which is hardly surprising given the historic relationship. We should not let these "tardorrists" change our way of life, yet that is exactly what our spineless politicians seem to be doing. Let's continue as before: beware, but be happy. Update: niq comments:
"Recommended reading: Terry Pratchett "Interesting Times". Written before "9/11" and set in the wrong part of the world, but nevertheless beautifully relevant."

4 July 2007

Jeff Bailey: Leif's Dedication


img_8432.jpg
Originally uploaded by jbailey
Photo taken by Alice Robinette
We celebrated Leif's dedication a couple weekends ago on June 17th at the Unitarian Church of Montr al. I got permission from Diane Rollert, our minister, to post the text of it.

(LJ-cut used to keep it from being too long)


Dedication of Leif Alexander Bailey, June 17, 2007

To the Child:
Leif Alexander Bailey, you have come with stardust in your hair, with the rush of planets in your blood, your heart beating out the seasons of eternity, with a shining in your eyes like the sunlight.

Your parents have brought you here to be dedicated, to celebrate the joy they have and to count themselves blessed that you are a part of their family.

As you grow, may you come to love what it is that your parents and this community of Unitarian Universalists value. May you learn to count the number of your days, to weigh their meaning, to gather into your mind the wisdom of your ancestors, to know why we call one thing right and another wrong, and to treasure beauty, mercy and justice in the deepest places of your being.

To the Congregation:
A dedication in the Unitarian Universalist tradition is one of the few sacred rituals we share together as a community. It is a covenant, a promise of love and care, that the entire community bestows upon a child.
Although Leif and his parents are leaving us to pursue new lives in San Francisco, they have chosen to dedicate Leif here in this church that has meant so much to them. Their travels may take them far away, but in this act of dedication today, we will covenant to continue to hold a place of care and concern in our hearts for Leif as he grows. Do you, as this religious community called the Unitarian Church of Montreal, take upon yourselves the privilege and the responsibility of helping to nurture the character and spirit of this child even at a distance?

Congregational Response:
We who are members of this congregation rejoice with this family in the promise of this child. We pledge him now the love and care of this community.

To the Parents:
Angie and Jeff, parents of Leif, please repeat after me this pledge. Leif, we pledge to help you to realize the best that is in you. We will seek, to the best of our ability, to instruct you by our teaching and by our example. We promise to love you with an unselfish love.

To the Child:
Leif, I dedicate you to the service of goodness, beauty and truth. I touch you with this water, which is a symbol of purity, and with this rose which is a symbol of your unfolding life, on your brow, your eyes, your lips, your heart and your hands, that your thoughts, your vision, your speech, your love and your generosity may be dedicated to the care of the earth and its people. We dedicate you that the transcending power of all that is divine may be present in you all your life long.


Closing Prayer:
Spirit of Life and Transcending Source of Love that connects us all, bless this beautiful child Leif this day and all the days of his life. As we rejoice in the promise of Leif s life that stretches out before him, let us remember those no longer with us, especially Leif s grandmother Glennis Bailey who left this earth too soon to meet her grandson, but whose memory and spirit will continue on through him. May Leif continue to serve with strength as his life unfolds so that the richness and wonder of life may be abundantly his. May peace dwell in his heart,and understanding in his mind. May courage strengthen his will and may the love of truth forever guide him.

Bernd Zeimetz: gimp-plugin-registry updated

gimp-plugin-registry updated During the last days I've upgraded the gimp-plugin-registry package. Version 0.2-1 does not only fix a few smaller bugs, but also contains the following new plugins/scripts: Please note that not all plugins will work with gimp 2.3 from experimental, therefore my next plan is to create a branch for experimental, which will not only include the proper changes for 2.3, but also include plugins which need the new gimp version to build/work. For example: As usual, I'm searching for good plugins which should be added to the package - suggestions are welcome!
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Russell Coker: Linux Job Ads

It seems to me that we need to have syndicated feeds for Linux job adverts. To start this I have created a new blog for Linux job adverts, it will have categories for the states and territories of Australia (with a feed for each category) and I will also create Planet installations that take feeds from the blog as well as any other Linux jobs RSS feeds. I will create the Planet installations when I have feeds to add. If your company regularly advertises Linux jobs in Australia then please create an RSS feed of the adverts and I will syndicate it. If your company occasionally advertises Linux jobs then you can email them to me. As of this moment there are no positions advertised, but I hope that to change soon.

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3 July 2007

Dirk Eddelbuettel: More on 'nicer charts'

Via the Planet Debian aggregator and his blog, Sven followed up on my post regarding Lucas' plot of the package age distribution. As some of my points didn't seem to make it across, I will reiterate them more plainly: Sven also addresses the fact that what we really want is to see the quantiles of the data set. Quite right, and taking logs makes that easier. Consider the two charts below which plot the 'package age in days' as an empirical cumulative distribution function using built-in R functions ecdf and plot.stepfun (rather than redoing it ad-hoc as I had done), and also add explicitly quantiles. The two charts use the exact same instructions; however the second chart transforms the x-axis to a logarithmic scale. Debian Package Age-since-recompile Distributions charted two ways While it is close to impossible to find the 25 or 50 percentile on the first chart, it becomes a lot easier on the second chart because the x-axis is 'stretched' using the log transform. About one quarters of the distribution appears to be rebuild within 1.5 months old, and about half is younger than four months (as a quick call to summary(pkgAge) confirms). Reading these proprtions off the original chart, or the non-log chart, is much more difficult.

2 July 2007

Ian Murdock: Lucky number seven

Anonymous: “So the problems started happening when we added the 7th wireless stack to the [Linux] kernel…” (Via Greg K-H.)

Gunnar Wolf: Keep rolling!

It seems that I've held up -at least for half a year- what I stated back in January - I come by bike to work almost every day, and really enjoy the time spent on two wheels. My times have -of course- improved, as has my dominion of the bike - I make ~10 minutes each way (must be a bit more on my way to work than on my way back, as it is uphill).
My city's government seems to be seriously promoting people to consider using the bicycle as means for regular transport and not just as a recreational device - I see some of its measures as quite silly, but some are just perfect. One week ago, while I was on the plane from Edinburgh, we had the first Ciclot n, a 32Km ride open to everybody (and of course, Nadezhda was among them). Over 70,000 people took part, reportedly, and it seems it will be held monthly. Besides that, yesterday we had the paseo dominical in Coyoac n very close to my house - What's that? Something similar to the ciclot n, only much smaller (14Km), much less publicized, and in a different place of the city every Sunday. Well, we started up the day at 8 AM by cycling from Metro Copilco to Miguel ngel de Quevedo, Av. Universidad, R o Churubusco, Divisi n del Norte and Henriquez Ure a back to Metro Copilco. We later learnt that around 10,000 people took part. 14 Km, 30 minutes - not bad, and quite enjoyable!
We didn't go for the second round, because we wanted to be by ~10 AM at Reforma, probably the city's most emblematic avenue, to be part of the demonstration marking one year of the electoral fraud. But... Well, we didn't want to just leave the bikes at home and go by metro - What can we do? Yes, take the open streets. We followed a bit of the path we had taken a bit earlier, then took Minerva, Insurgentes until Reforma (~45 minutes). And once we got to the meeting point, we didn't want to step down and crawl the bikes along... So we both found out that not only we dared take the main streets where people are not really used to cyclists and where taxi drivers will often try to make a point that if you don't own a car you should use a taxi and not a bike - We were able to cycle most of our way to Z calo, going slowly and moving through people, in what seemed to be almost an unthinkable feat for me just a couple of months ago. We can now control the bike, we can even be almost still while riding it, and not crash into anybody!
Of course, the way back was similar - We took our bikes across Obrera, Doctores, Algar n and lamos, then took Av. Universidad all the way down to Copilco, and -after some three hours riding, with my arms quite red and of course somewhat dehydrated and sore-butted- got home.
It feels great to have a well-deserved siesta! And... Well, biking is just too enjoyable. I guess we had ~45Km yesterday, plus some ~5 extra zig-zagging through the crowd. It rules.

1 July 2007

David Welton: 10 Years of Debian

I'm not sure of the exact date - if my memory serves me correctly, it was sometime during the summer of 1997 - I was given an account on Debian's server (located, at the time, in Beaverton, Oregon). I didn't go on to upload my first package until October of that year, as I had landed my first programming job at the same time, at CKS Partners. The "new maintainer process" in those days consisted of Klee Dienes calling me up and checking that I was a real person, had a pgp key, and wasn't completely clueless. It was a very different project in many ways than it is today - much smaller, much more informal, and of course much less well known in the world at large. Some elements were in place, though - my recollection is that the "flame friendly" atmosphere, while perhaps not quite as accentuated as it at times appears today, was firmly in place even back then. In '98, '99', and 2000, the Linux world was an exciting place to be. I still recall reading about the database companies deciding to release their products on Linux, reading The Cathedral and the Bazaar, and going to one of the first big commercial Linux conferences, in San Jose, in early 1999. Debian was well poised to take advantage of Linux's growth, too. Under Bruce Perens' leadership, several key elements of Debian had been put in place, like the social contract and free software guidelines. Fortuitously, Jason Gunthorpe was working on apt in that time period as well, which was another key element in Debian's success. One of the things I've always admired about Debian in the open source world is that it is in some ways a "stepping stone" project, meaning that it's a good way for people to start getting involved with free software, to get their toes wet "giving something back", without already being an expert hacker. It's easier to maintain a package of code, if you're willing to put in the time and attention to details, than to, say, write a new kernel module, or some other piece of critical C code. I've seen a number of people take this route - they get started with Debian, and as they go, learn more about the packages they work with, and perhaps even get involved with them "upstream", as they acquire skills and knowledge. By no means is everyone in Debian in that situation, though - there are some really first rate hackers, who tend to be the small core of people that really make Debian zing along. Indeed, being an autodidact in the world of computers, outside of one very forgettable term of C++ at Lane Community College, has given me an immense appreciation for the enormous opportunities open source affords in terms of learning - and especially hands-on learning. How many other fields let you work from anywhere in the world with an internet connection, with anyone else who is interested in the same subject, at whatever time you want, with tools that you can download entirely for free? It's really an intoxicating sensation realizing that you can do anything you want if you are willing to put the time in to learn how. The learning opportunities are one of the many things I'm grateful to Debian for. These days, I'm really not involved much with Debian anymore. I mostly run Ubuntu, which I think has perhaps improved on some of the social aspects of Debian (although Mark's zillions of dollars certainly play a large role, too). In terms of free software, I don't have as much time, and dedicate more of it to my own projects like Hecl. I still love the idea of open source software, but I'm also older and wiser (or more cynical?), and must face the reality that without scarcity, you have nothing to trade with others for things like food. Due to my lack of activity, perhaps I should resign, but ... I really don't want to, and who knows, maybe I'll have more time, and an "itch to scratch" at some point in the future. Who knows what the next ten years hold for Debian?

30 June 2007

David Welton: Linux Notebook

I think the time is finally right to get a notebook while we're in Oregon this summer, and was looking at the Dell/Ubuntu systems, which look like a good deal. The only thing is the long wait. It would ship the 16th of July if I ordered right now, according to their ordering system. That's a long wait, especially since I'd like to have it around to get some work done while we're over there. After looking around a little bit more... the price looks really good, so it's very, very tempting.

Dirk Eddelbuettel: Improving simple charts

Earlier today and via Planet Debian, Lucas blogged about the 'age distribution' of Debian packages, defined as the time since the last (re-)compilation. He illustrated his findings with an, umm, rather ugly chart. Having climbed onto the soap box once before, I would like to point out how easy it can be to create simple, informative, and, at to least to me, prettier charts using R. Lucas included a URL to the data. The first nice thing to note that we can read the data directly from the URL -- no need to copy the file: 
pkgAge <- read.table(file="http://people.debian.org/~lucas/arch-age/arch-age.log", col.names=c("pkg","yyyymmdd"))
read the data into a data.frame which we have given two column names. 
pkgAge[,"date"] <- as.Date(as.character(pkgAge[,"yyyymmdd"]), "%Y%m%d")
pkgAge[,"age"] <- as.numeric(difftime(Sys.Date(), pkgAge[,"date"], units="day"))
pkgAge[,"prop"] <- (1:nrow(pkgAge)) / nrow(pkgAge) * 100
We then create three new columns. First is a date, by parsing the (integer) dates (after first casting them into characters) by supplying the format in standard C notation: "%Y%m%d" for year, date and month without any separators or formatters. Now, having the date as an actual date object inside a real data analysis language we can do things as e.g. computing date differences. The difftime function does just that, using the current date as other point. We ask for the return to be in days, and cast this down to a purely numeric vector (instead of datediff object). Lastly, we quickly compute the date proportion in percentages. We can then view the date. Before we plot, 
png("packageAges.png", quality=100, width=640, height=480, pointsize=10)
oldpar <- par(mfrow=c(2,2), mar=c(2.5,2.5,3,1))
we direct the charts to a png file of given dimensions, and ask for all plots in one figure (using mfrow with two rows by two) with somewhat smaller figure margins using the mar argument to par. The first chart shows again proportion over date: 
with(pkgAge, plot(date, prop, type='l', main="Standard Plot"))
(The with() function simply allows us to refer to the columns by their names without explicit subsetting. plot(pkgAge[,"date",], pkgAge[,"prop"]) is equivalent, but more cumbersome.) As it clear that the data has a fairly long tail in the older dates, we can also try to plot the plot over logarithmic time differences. This doesn't work for dates, but it works for our (positive-valued) age variable: 
with(pkgAge, plot(age, prop, type='l', log="x", main="More linear as log(age in days)"))
The very far left tail below 0.5 percent is interesting as the one very old package is clearly an outlier within an outlier region. We use the subset function to take just one portion of the data, use logs, and explicit plotting symbols '+' in a points-and-lines plot: 
with(subset(pkgAge, prop0.5), plot(date, prop, type='b', log="y", pch="+", main="Detail in left tail, up to 0.5%"))
Lastly, the upper quartile is fairly linear. 
with(subset(pkgAge, prop>75), plot(date, prop, type='l', pch=".", main="Yet fairly linear in top 25%"))
At the end 
oldpar <- par(mfrow=c(2,3))
dev.off()
we restore the graphics paramters and close the device (here the file). All this then yields the following chart: Debian Package Age-since-recompile Distributions Updated to correctly display the assignment operator <-

Eric Dorland: Random

One thing I'm really missing is Montr al in the summer time. Particularly the Fantasia Festival, where I would usually take in twenty-odd movies over a couple of weeks and I've been going for years. It was great. New York doesn't seem to have anything that compares, except maybe The New York Asian Film Festival. But that seems quite a bit smaller and more focused. I'll still check out it out though.

It's been nearly 7 months since I've moved here and time has really flown. Work has consumed most of my life and it's been amazing, but I'm starting to feel like it's lacking in certain areas. I've barely seen most of Manhattan and it's really not that big. I need to make sure I get the balance right.

DebConf 7 was fantastic, doubly so since I got to share it. My BoF was not that popular (which is what I expected) but people were interested and audience participation was high, so I was pleased. I sort of divided my time between the conference and being a tourist, so I hope no one felt like I was ignoring them. Edinburgh was an amazing city, really very beautiful. It felt good to be connected with this place (my mother was born in Perth, not too far away). Simon, Martin and Kai, you guys rock!

Speaking of DebConf, I should have cornered Keith for some troubleshooting. I bought a spiffy new desktop recently with a 965G chipset and plugged in an SDVO card and tried to get dual monitor set up going. After much Googling I found that Xrandr is apparently the new cool way to configure this, but information is pretty scarce. I can't seem to get them to both work at the same time. There could be problems because they have different resolutions (one is a 22" wide screen and one is a regular 19"). The lack of information about this is slightly frustrating and tells me either no one is trying this or no one else is having problems. Neither is good :)

29 June 2007

MJ Ray: Sustainability, Search Engine Traffic and free software webmasters

Regular readers may remember that I'm a vocal critic of some search engines and the unreliability of their fast-changing algorithms. One day you're top ten and the next you're gone. If you're building your business on search engine referrals, you're building your castle on shifting sands. SEOBook: Website Sustainability: What Percent of Your Traffic Comes From Search Engines? has good advice:-
"one of the best moves you can make for the sustainability of that site is to lower the percentage of traffic that comes from search"
That's one reason why I'm glad to see the suggestion of etbe: Advertising Free Software Projects - nearly every free software project would be better off improving their web sites, adding cross-links and building more sustainable traffic, instead of wasting resources competing in the Google-ad Games. Unless you've got the thousands of pounds a year that successful AdWords marketers spend, your Google-ad success will probably be short-lived, as people with more money will outbid you for keywords that work. It's even less sustainable than search result traffic, because it's consuming your financial resources as well as your vounteer time. Meanwhile, most free software project webmasters I know are over-stretched, but many wannabe-contributors seem to want to nuke the entire site to rebuild it with their pet tool. Those offers are really about their ego more than helping the project, in my opinion. They want to Get Themslves Noticed, but I've seen far too many unfinished site rebuilds to like those offers. In fact, I don't think any good webmaster would offer a rebuild without the site owner asking for it - even in the rare cases where I really strongly want to restart a site, I explain why and ask permission first, not just wade in with an offer to nuke-and-rebuild. If the site owner says no, I move on: there's no shortage of work here, after all and very few free software projects pay their webmasters. So, if you want to help a free software project, ask their webmasters for suggestions and access to the site source code.

Martin F. Krafft: DebConf7

I am sitting at Frankfurt airport in between flights home from Edinburgh (not anymore, but that's where this post was born). It's been an intense 2.5 weeks of DebConf7, which has been unlike other DebConfs for me in two respects: this was the first time I actually went to DebCamp, the week leading up to the conference, which is designated to teams and individuals with development goals to achieve during the week. And I was also actively involved in the organisation of the conference, which was unexpected, but a very good experience I am not going to miss next year. Well, it wasn't unexpected. When I booked my flights in January, I had decided to arrive a day early and leave a day late to be able to lend a hand. In between then and the conference, my life turned somewhat upside-down and I had forgotten everything about these noble goals of mine. So when I arrived at the conference venue on Saturday morning with thoughts of netconf circling my head, I was surprised to find everyone buzzing about (how na ve of me) and somewhat clueless as to how I should merge in: my wrists didn't really hold up to heavy lifting, and my knee certainly didn't enjoy stairs, of which there were plenty on the way up to the top floor, where DebCamp was taking place. After trying and being mostly ridiculed by the other organisers ("friends"... ha!), I set out to accomplish some other tasks more suited to my bodily condition, such as wiring the hack lab to accomodate 40 geeks for the first week. That took me most of the day, but at least the space was ready for Sunday morning and the official start of the camp. My goal for the week was netconf and I made good progress until I ran into a wall on Tuesday and had to back off and rethink my design. Reinhart Tartler and Enrico Zini dedicated their time to listen to my design and the problems and helped me clear the mess up and helped me reduce complexity and converge on a straight-forward, event-based design. As the newly appointed DebConf press officer and one of the organisation volunteers, I did not get any further for a few days, as I was manning the front desk or preparing and releasing my first press release (with the help of several others), which lead to a lovely story on The Register and doubled the number of attendees that preregistered for DebianDay (which marks the end of DebCamp and the start of DebConf). I blame the geeks in skirts, actually. Silly bunch, but not quite as silly as those attendants who could get a laugh out of the underwear question for two weeks in a row. Up to this point, I had managed to keep a perfect balance between netconf, orga-team, and sleep. So good, apparently, that when the orga-team t-shirts arrived, Uncle Steve made it quite clear that I should be getting one, even though I had spent considerable time on netconf, am sure some of the others must have worked twice the amount, and I was still quite well rested then. But they gave me a shirt and thus I became part of the orga-team. And even though it was rough at times, running around during the day, filling spare minutes with netconf brain-work, and enjoying nights that got longer with every day of the conference, I am glad and proud to be a member of this team now. It took me until after the official start of the conference to return to the netconf code, but with the new design, I got most of the framework to a point where it could obtain static and dynamic addresses from configuration files as well as DHCP servers in time for my presentation on Tuesday (the recording of which shall be linked from the netconf homepage as soon as it's available). Of course, nothing worked on screen in front of the audience, but noone really expected that anyway. and then I took it all apart for further simplification, so by the time night fell, the slides from the talk had already become outdated as I moved to yet another design, which is even simpler and which allowed me to sketch complex scenarios, such as DHCP after WPA. For two days, I made good progress, but the time available for hacking decreased noticeably, as I kept volunteering for more tasks that needed doing, and more and more people turned up. Somewhere in between, Keith Packard took hostage of (and fixed parts of) my broken X40 laptop, but that's the meat of another story. And on some other night, our leader Sam, in his official capacity as DPL, presented me with the instantiation of my innermost desires as consolation for my hosital stay: a pony. Just look at that smile! With 400 attendants, this year's DebConf continued the trend of immense growth of the event, and while it's great to witness this increase in popularity among attendees and sponsors, who make it possible each year to fly more people to the destination, I am also rather sceptical. The problem is less the additional load on the organising team the next 100 people are going to be easier to accomodate than the previous 100 were. It is more that the conference is losing focus. More people make you spend less time with the same folks, and as the number of non-contributors increases, the social element starts to outweigh the technical element. I am not condemning the social element, but to paraphrase the words of my favourite Debian developer, it's painful to come to DebConf or even IRC with a project and questions just to find that the people are generally more interested in being social, even to the point of preventing technical discussions. I realise that this is a sensitive subject as the issue of various cabals keeps coming up frequently and it does not seem right to start limiting the audience to this conference, but unless we consider the matter, DebConf might deteriorate similarly to other conferences, which have enjoyed enormous growth as well before it was too late. I think we must make sure that people understand that we are, after all, a technical project and must not lose touch with out roots. Of course, I may also be overreacting, after a week of intense coding and many other stress factors I continued working hard on netconf and helping with the organisation throughout Friday, briefly taking time off to prepare a presentation on my Ph.D. research, which was very well received, as well as a workshop on Debian packaging with modern (distributed) version control systems, which yielded around a dozen new subscribers to the vcs-pkg mailing list. But now, back to netconf. All things considered, I was making good progress, but not getting netconf into a releasable state just yet. I can parse /etc/network/interfaces files and get data from DHCP servers, even configure interfaces with those, but it's all still work in progress as I have not yet bothered to implement such basics as default gateways or DNS servers. But the framework is in place, and I am very happy with it as everything I keep adding falls into place beautifully. To mark the end of my netconf development sprint at DebConf7, I scheduled a code introduction session on Friday, where around 15 people turned out to get a walkthrough of the code and explanation of some of my design decisions. The session was recorded and will be available on video shortly. I think it turned out to be a very good idea; I found myself intrigued by someone else's code before until that someone took the time to explain what was going on. I sincerely hope that this introduction helps bootstrap a few people's experiences with the code and yields more contributors! Even though we ended almost every single evening of the two weeks in one of the surrounding pubs, the last few nights were definitely the most enjoyable. On Thursday, the local team had organised a Ceilidh with a band teaching us geeks how to dance the Scottish way, and the venue stayed open for two hours longer than before, causing most people to come out for beer or bouncing about. On Friday and Saturday, the folks of InfoSeed let us use their comfy couches (in the basement of the conference night venue) and we chilled to music and massages, while on Sunday, after a very tiresome day of cleaning up, the noticably lesser number of survivors hung out at the Forest Cafe for some so-so live music, few beers, and an early journey to bed, where a Dutch Muppet kept us entertained for at least another hour. The best about Monday, my day of return, must have been that the airline lost my backpack, which saved me from having to lug it around in Zurich, and made for a great moment on the phone with the baggage tracing service, who announced that my bags would be delivered in about 6 hours between 20:00 and 22:00 just as the door bell rang and the courier dropped off my bag. I'll be back in Argentina, unless something goes seriously wrong. And I'll be on the orga-team again. If you guys stop holding your meetings on Monday night. Thanks to everyone who made DebConf7 possible. I am proud to have been able to contribute, but the real work was done by a few others. You know who you are. NP: Solar Project: Five

Joey Hess: google notebook

There's a photo of me going around the interwebs with a strange caption that misses what was going on. The real story is, after my notebook's power supply died, I tried out this other weird notebook that Google had obtained, apparently from some alternate universe, and was giving away at the conference. It was very nice and small, and had impressive touch-screen data-entry technology (though I kept losing the stylus), and amazing battery power. Seems the data I put it in might stick around for a good hundred years, without any recharging. I was happy to not have to hook a clunky British power adapter up to it. It was also impressively easy to enter arbitrary unicode character such as BOPOMOFO LETTER EH, RUNIC TVIMADUR SYMBOL, and THING I SCRIBBLED DURING BORING PRESENTATION WITH CEDILLA BELOW. Downsides: No wifi or other network (didn't check GSM), very limited storage space (only a few dozen Kibobytes I think), an atrocious text editor that made moving text around way too hard, and had a really bad font, difficulty deleting things (the obvious way to delete something often accidentially removed nearby files as well -- and didn't actually regain any storage space), and very limited encryption (best I could get out it was rot-13). On the network front, there is apparently some "Postal Mail" app that can be used to send mail, but it can take like, weeks, and charges per message. And yeah, no solitare at all, though there was this hangman app. All in all, I was happy to get my Fujitsu back, though I might hold onto this Google notebook thing for emergencies. Won't be porting d-i to it anytime soon though.

28 June 2007

Alastair McKinstry: Fun Filenames

Ok, some interesting output from a build script of a nameless code I'm working on: 
...
scanning lib[10].a ...
scanning lib[11].a ...
scanning lib[12].a ...
scanning lib[13].a ...
scanning lib[14].a ...
scanning lib[15].a ...
pgf90 -Wl,--start-group ./master.o -L. -l[1] -l[2] -l[3] -l[4] -l[5] -l[6] -l[7] -l[8] -l[9] -l[10] -l[11] -l[12] -l[13] -l[14] -l[15] -Wl,--end-group -llapack -lblas
./lib[2].a(cprep1.o)(.text+0x181d): In function  cprep1':
...
Next time, think of someone trying to find these interesting files. People using regexps, ok ? What do these 'libraries' contain, anyway ? Tags , ,

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