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Tuesday, April 12. 2011
PGConf.EU 2011 will be held in ... Posted by Magnus Hagander in PostgreSQL at 08:13
It's time to mark your calendars: PostgreSQL Conference Europe 2011 (formerly known as PGDay.EU) will be held on October 18-21 at the Casa400 Hotel in Amsterdam, The Netherlands.
Like last year, the conference will be held in a hotel venue, combining both the conference rooms and guest rooms, so you don't have to waste any time finding your way around the city. As in previous years, the conference will include full catered coffee breaks and lunches, to make the most of the time. The first day of the conference will be a training day, and the following three days will be regular conference tracks. The conference will accept talks in English, Dutch, German and French, to benefit those attendees who prefer talks in their native language.
We are just starting our search for sponsors - if you are interested in sponsoring the conference, or know someone who is, please take a look at our sponsorship opportunities and don't hesitate to contact us if you have any questions or would like to propose an alternative arrangement.
We will also follow up with a call for papers later, and in due course open for registration and post a conference schedule. For now, mark the dates, and follow the news on our website and on our twitter stream @pgconfeu.
Tuesday, December 28. 2010
Feedback from PGDay.EU the final ... Posted by Magnus Hagander in PostgreSQL at 11:57
The big change for PGDay.EU this year really was the switch from a university venue (first Monash University in Prato, then ParisTech in Paris) to a hotel venue (The Millennium Hotel in Stuttgart). We believe that much of the rest of the conference was an improvement over previous years - but it was an incremental improvement, whereas the change of venue was rather drastic. Looking at the feedback on this, I think we can conclude that this change was in general a positive one:
We're seeing a total of 75% who rate the venue as a 4 or a 5. Looking at the freetext comments, a large majority of them are very positive, but there are a few ones that stand out:
Amongst the positive ones we find a large number of comments saying that the "integrated venue" or "all inclusive" venue was a great step up.
Closely related to the venue, is the food. Unlike the big north American conferences PGCon and PG-East/West, we have for the past two years tried to provide proper lunches and not just sandwiches/boxed lunches. This obviously costs more money, but we believe it's worth it, and we think our visitors do. Last year we had a catering firm bring us assorted food, mainly cold cuts, at the conference venue, and this year we got proper lunch buffets (including multiple choices for dessert, of course..) at one of the hotel restaurants. I think the ratings speak for themselves - I would encourage those other conferences to look into improving their lunches as well!
A full 82% rated the food as 4 or 5. In the end, the cost for paying for a lunch "on ones own bill" would probably have cost more than half the conference fee - so we think we managed to provide some very good value. In fact, several people rated the food as being the best part of the conference(!)
There was, however, one person who said the food was one of the worst things about the conference - if you recognize that was you, we would very much like to know exactly why (no details were included) - please send me an email or write a comment here!
A few people commented on the large amount of food left over from lunch on at least one of the days - it is up to the hotel to decide what to do about that, but it is our belief that they do something "reasonable" with it - and not just throw it away. We know that the caterers last year delivered all leftovers to a nearby homeless shelter, for example. For next year, we will attempt to again get a specification from the catering/restaurant as to what happens to leftovers.
We feel that the overwhelming majority of our visitors found the changes an improvement, and we will therefor pursue something similar as our primary option for next year. We are always interested in improving further, of course, so if you have any other ideas - let us know! The final question we asked about the venue was where to hold the conference next year. Many were quite ambiguous in their suggestions ("big city in Europe" is in, "Hawaii" is out because we want to stick to Europe). Summarizing what we could gave us the following:
The final part of our evaluation was considering the conference website and registration:
In general these are very good rates. I'm happy to see that more than 50% rate the website overall experience as 4 or 5 - that's a much better rating than it's being given by the people who edit the content on it! Same for registration, with very few people rating it really low. There's clearly some room for improvement though:
In summary, here are some reasons in graphical and textual forms why you should already put attendance to next years PostgreSQL Conference Europe in your budget:
That concludes my summaries of the feedback from this years PGDay.EU conference. If your specific comments haven't been called out here, don't worry - we still read them all and will consider them all for next year!
Finally, thanks again to all who helped make this conference great!
See you again next year!
Wednesday, December 22. 2010
Feedback from PGDay.EU - the speakers Posted by Magnus Hagander in PostgreSQL at 15:37
The next issue of my "pie-chart-overflow blog posts about PGDay feedback" is about our speakers. The speakers are, if that's not obvious, the reason that people come to the conference. Having good speakers is an absolute requirement if we want to keep up the quality of the conference. Other things like venue and price are certainly important, but nothing compares to the actual content of the conference - which is provided by our speakers.
I'm very happy to say that we seem to have manage to keep the very high numbers for Speaker Quality that we had from last year (differing less than 3% which is well within the margin of error). The same goes for the scores our speakers got on their knowledge of the topic - indicating that we've managed to attract some of the most skilled speakers in the world. Which is not surprising given that in many cases, we the person speaking about a feature is actually the guy who wrote it. What is more surprising is that these same people are rated as very good speaker - which we all know isn't always true about your stereotypical developer.
Just like last year, we're not going to post the complete list of speaker ratings, given that they are easy to read wrong. But here is a list of our top speakers, excluding any that had less than 5 ratings. Any speakers who have fewer than 10 should be considered a very uncertain number, and I've again included the standard deviation to determine the uncertainty. We had a lot more speakers this year, so I have only included those scoring 4 or above this time around. Each speaker has received his own detailed score, of course.
The list based on Speaker Knowledge looks slightly different, but not very much. Given that our speaker knowledge has been rated even higher than speaker quality, I've only included those who scored 4.6 or higher (which is a fantastically high cutoff)
A great big thanks to all our speakers - you did a fantastic job.
We will need to work hard to keep up our recruiting of speakers for next years. If you were considering but decided not to submit a talk for some reason - please let us know why, so we can improve! Or if you have any ideas in general on our processes around this. For example, we had no female speakers at all this year - we know you're out there, and we certainly want you there, so what do we need to change to make this more interesting for you as a potential speaker? The same goes for other groups that we were missing of course: now is the time to let us know so we have the time to change things before next year!
Wednesday, December 22. 2010
Feedback from PGDay.EU - the contents Posted by Magnus Hagander in PostgreSQL at 09:53
This blog seems to be turning into a PGDay blog rather than a general PostgreSQL blog. But I promise I'll get back to some more technical content soon - or at least that I'll try.
A couple of days ago we closed the feedback system from PGDay.EU 2010, and have been busy tallying the result. It turns out that my constant nagging on people to please fill out the feedback worked - we got a lot more feedback this year than last year. That also means there's a lot more work in going through mainly all the freetext comments - that's the price I have to pay, I guess. In total we had around 60 people who left "full conference feedback", which is almost double from last year. It's still only just over 25% of the attendees, so it could certainly be even better yet. We also had 86 people who left session feedback (this is around 40% and a much better number of course) for a total of 570 session feedback entries.
So what did the feedback say - time for some pie charts! We've actually seen a slight decrease in the ratings for topic importance. This may well be because we've broadened the topics more. We're still seeing very good grades for content quality, which reinforces my feeling that our speakers deliver very valuable content to the attendees, and that the conference is well worth attending. (As a note to readers - I've had several people point out to me that german people are used to rating 1 being the highest and 5 being the lowest, so there may be some skewing in the voting because of this. Even though the pages very clearly stated that 5 is the highest, this is something we need to make even more clear for next year)
We spent a lot of time trying to put together the puzzle that is the schedule for so many talks over so short time. It turns out that we did a good job in general, but there was a large amount of overlap where people wanted to go to many talks at the same time. We also received a lot of comments in the freetext fields about this, and this is definitely something that we will consider for next year. It would probably have been better content-wise to have three tracks spread over three days (maybe not entirely complete) rather than four tracks over two days, but that would also have increased many of the costs with 33% which is a lot of money...
Of course, the "Hallway track" is a very important part of any conference like this, and this year we collected specific feedback on this side. I'm very happy to see that more than two thirds of our attendees rated the learning part of the hallway track as 4 or 5, and well over half found it a good way to connect with other people in the community!
If these numbers don't make you interested in next years PostgreSQL Conference Europe then, really, you're reading them wrong...
That's enough pie-charts for one post. I will follow this up with more feedback summary on our speakers and on our venue once it's ready.
Friday, November 26. 2010
pgday.eu registration deadline extended Posted by Magnus Hagander in PostgreSQL at 15:18
The registration deadline for pgday.eu has been extended. Instead of ending today, the new deadline is Saturday, December 4, 17:00 CET. There are, however, a few restrictions with this extension:
Once this second deadline expires on the December 4th, you are still welcome to attend the conference - but in this case, you have to pay the higher price for a pay at the door registration. Even if you choose this, we do appreciate if you register online first (choosing that rate), so we can prepare a badge and conference pack for you.
If you have any further questions, please contact us at email@example.com.
Thursday, November 25. 2010
PGDay.EU - where's your country? Posted by Magnus Hagander in PostgreSQL at 10:25
Initial numbers from our registration database for PGDay.EU 2010 is showing that we are expanding our international reach more than last year. In 2009, 60% of the attendees were from France, which is where the conference was held. This year the number of attendees from Germany is "down" to about 50%, meaning we have more people from other countries. The total number of countries is down one though - we have no registration from Nicaragua this year! Even our attendance from the US is up to three more people.
Pardon my horrible openoffice.org chart, but here is the current spread of attendees. Where does your country stack up? If it's not Germany, then it's not high enough - time to suggest/encourage/force/trick your friends and colleagues to register and attend! (And if it's Germany - hey, can you really let the French get to 60% last year and not beat them this year?)
Registration for PGDay.EU 2010 closes soon! Don't miss out on the biggest PostgreSQL event in Europe this year, and all the great presentations!
Monday, November 22. 2010
Make your picks - PGDay.EU 2010 Posted by Magnus Hagander in PostgreSQL at 20:00
PGDay Europe 2010 is drawing closer - only two weeks until kickoff! Some of the training is filled up, but we still have space for some more people on the general conference (and some of the training sessions). It's not too late - go register!
I'll be spending much of the time working with the conference administration, hopefully making things flow. But with a schedule like this, there are some sessions that I'm definitely not going to miss:
With this much great content, it's hard to choose - but those are my choices for PGDay. (I of course reserve the right to change my mind, depending on how late the speaker left from the party the day before)
What are yours?
And if you haven't registered yet, you still have a few more days. Don't miss your chance to attend the biggest PostgreSQL event in Europe this year! Registering is easy and quick - not to mention cheap!
Tuesday, October 19. 2010
PGDay Europe 2010 Registration Open Posted by Magnus Hagander in PostgreSQL at 13:10
It's finally time - we've opened up for registrations for PGDay Europe 2010.
We are not finished with the schedule yet, so if you are looking for a specific talk, you'll have to wait a while longer. Work is in progress though - we've already notified some of our speakers that they are approved. However, if you submitted a talk and have not heard from us yet, it's not yet time to panic. The reason we haven't published a schedule yet is that we're working on ways to include more talks!
So why would you want to go register now, even though the schedule isn't posted yet? Well, first of all, the schedule is looking like it'll be at least as good as last year. We have several well known good speakers from the community showing up again, and also some fresh faces with interesting topics!
But more importantly, this year, we've added training for the first time. Training will run on the wednesday (the main conference being monday and tuesday). This training is *limited availability* (25 seats per session), and *extra cost*. You pay this at registration. And the seats are handed out on a first come/first serve basis. So if you want to attend the training, now is the time to register! The training schedule *is* final, so be sure not to pick two training sessions that run at the same time.
The conference this year will be held at the Millennium Hotel in Stuttgart. We do recommend that you reserve a room with that hotel, as we have a group rate there, and it's conveniently located (hint: no need to go outside to get from A to B). But using this hotel is not mandatory - you can book your room anywhere you like. However, it should be noted that *wireless internet* is only included if you booked a room *using our group rate*. If you don't, you can pre-purchase the access when you register, or you can solve it yourself for example using 3G data. We will *not* have the ability to provide or sell you wireless access unless you pre-purchase it!
With all that said, head off and register!
Friday, November 27. 2009
Feedback from pgday.eu Posted by Magnus Hagander in PostgreSQL at 11:46
I've finally had the time to summarize the feedback we received from pgday.eu.
We received feedback from about 35 people, which is obviously way less than we were hoping for. Ideas for how to improve this for next time are very welcome! This also means that the figures we have are not very exact - but they should give a general hint about what our attendees thought.
I just sent out the individual session feedback summaries to each individual speaker. These will not be published - it's of course fine for each speaker to publish his own feedback if he wants to, but the conference organizers will not publish the detailed per-session data.
The statistics we do have show that most of our speakers did a very good job, and that the attendees were in general very happy with the sessions. We have also received a fairly large amount of comments - both to the conference and the speakers - which will help us improve specific points for next year!
I'll show a couple of graphs here with the total across all sessions and speakers. In these graphs, 5 is the highest score and 1 is the lowest.
The attendees also seemed to be very happy with our speakers, which is something I'm very happy to hear about. It's also good to see that almost nobody felt the speakers didn't know very well what they were talking about - always a worry with a conference that has so many experienced community people attending.
Actually trying to figure out which speaker is best using this data is very difficult. But here's a list of the top speakers based on speaker quality, who had more than 5 ratings on their talks. The list includes all speakers with an average score of at least 3.5. There are a lot more hovering around that line, but there has to be a cutoff somewhere... Again note that there are still not that many ratings to consider, so values are pretty unstable. I've included the standard deviation as well to make sure this is visible.
All of these are clearly very good numbers.
So once again, a big thanks to our speakers for their good work. And also a very big thanks to those who did fill out the session feedback forms - your input is very valuable!
Update: Yes, these graphs were made with a python script calling the Google Charts API. Does anybody know of a native python library that will generate goodlooking charts without having to call a remote web service?
Wednesday, November 11. 2009
My pgday.eu pictures are up Posted by Magnus Hagander in PostgreSQL at 20:09
Matt Spencer about PostgreSQL vs 64-bit windows
Wed, 06.06.2012 05:23
I agree totally, the 64-bit ve rsion definitely solves the pr oblem if you need more memory. We need to gradually sh [...]
Jim Smithson about PostgreSQL vs 64-bit windows
Tue, 05.06.2012 07:04
Users who are challenged by th e memory taxing qualities of t he 64 bit should go back to us ing 32 bit. It offers sm [...]
Magnus Hagander about PostgreSQL vs 64-bit windows
Thu, 19.04.2012 08:22
You are missing the point - wh ich is exactly that the filesy stem level cache does not ha ve a lower cache hit rat [...]
Marcov about PostgreSQL vs 64-bit windows
Mon, 26.03.2012 19:57
Any VM base caching is limited to the maximal mappable addre ss space(which is about 4G in windows 64-bit, 3GB in 3 [...]
Magnus Hagander about Finding gaps in partitioned sequences
Mon, 06.02.2012 10:18
Hah, thanks for pointing that out. That's what I get for try ing to clean up the formatting when posting it...
mark about Finding gaps in partitioned sequences
Tue, 31.01.2012 19:01
thanks, sorry I should have no ticed that was the seq MINUS t he lag function. p.s. you example may have a typo [...]
Magnus Hagander about Finding gaps in partitioned sequences
Mon, 30.01.2012 17:25
No, there are no user defined functions in this. seq is the column name, then minus the o perator, then lag the bu [...]
mark about Finding gaps in partitioned sequences
Mon, 30.01.2012 17:23
what is seq-lag ? i assume thi s is a user defined func.
Magnus Hagander about www.postgresql.org - brand new, yet old and familiar
Thu, 22.12.2011 17:41
Yeah, unfortunately we are sti ll waiting on David to migrate the content over there.
Thu, 22.12.2011 16:55
The weekly news page (http://w ww.postgresql.org/community/we eklynews/) seems to be broken. I see only a couple of [...]