http://channel9.msdn.com/Events/TechEd/NorthAmerica/2013/RSS/slides

The key is though, we couldn't determine the *cause* of this CPU usage increase, and increasing the # of instances was *not* reducing the CPU usage significantly, we were just bringing up new nodes which would then quickly ramp up to 100%. The load on our site was actually higher before the CPU started to spike, and even when the load went down, the CPU usage stayed at 100%.

So, scaling up (easy as it was) was not solving our problem. Our theory is that some particular bit of code, that was being hit by TechEd attendees only, was causing the issue, not the overall site load. We spent most of the day and last night digging through code trying to figure out what event specific feature was causing the issue and we found quite a few areas where improvement was possible. We are watching the CPU load carefully today and have several people still digging into code, running traces and profiles.

Essentially our failure is that our pre-event testing and load was not a true representation of the load that the real event puts onto our site. We definitely feel your pain on this, trust me we were actively engaged trying to fix it and stayed on site until after midnight last night attempting to debug.

Hopefully today, and the rest of the conference, will proceed more smoothly.

For live broadcasts we start with Silverlight, fallback to Flash, fallback to HTML 5 with HLS (for iOS devices) and then finally fallback to a secondary stream that is generated as a WMV that will play on Windows Phone.

For on-demand (everything else here on Channel 9), we go Silverlight, HTML 5 (with H264 and webm files to cover most browsers), then Flash, then a direct link to the WMV or the MP4 depending on the OS of the user.

For this though, it is just the OSMF player (http://www.osmf.org/strobe_mediaplayback.html) using the new smooth streaming plug-in from Microsoft (http://www.microsoft.com/en-us/download/details.aspx?id=36057). So it is a flash player hitting a smooth stream, not a Flash media stream like you'd normally see.

Thanks for checking it out!

For fallback on machines without Silverlight, we are testing a flash player that supports Microsoft's smooth streaming format... seems to work... I'm just not very familiar with flash, so not sure if it should work for everyone

Apr 17, 2013 at 5:03 AM, Fredrik​Nilsson wrote

@MatsO: Same to you Mats, give me a ping if you like to grap something to eat or drink

Just realized that it's not possible to reply to two posts

@FredrikNilsson: Sure it is, just click reply on one ... type your reply to that person, then

@PatrikWennberg: click reply on another and type your reply to them (sorry Patrik, including you just to demonstrate) ... then submit the whole thing.

@karelvdh: As far as I can tell, you choose *not* to be listed in the attendee directory, so we take that to mean you wouldn't want any indication on your profile that you were attending and you don't get the achievement. If you can change that (go back to your registration https://www.ustechsregister.com/TechEdNA2013) then you should get the achievement.

1 hour ago, DCMonkey wrote

Note it leaves out the iPhone as well. Since its a game guide I assume its one of those large format books with lots of graphics. It probably would be unreadable on a phone sized display. And it wouldn't work on e-ink Kindle either.

Yep, that is what is happening here... I have seen graphic novels that have the same set of device support. I believe they are using an advanced document format and support for that format is not available across all their devices (and may never be supported on the e-ink devices)

There is always a certain amount of consumer-focused developer topics, what with our new model around Windows 8 apps, and the need for people to learn about developing for Windows Phone, but hopefully we can have what you need as well.

Specific examples of what you are looking for would be great. ASP.NET? Windows Forms (sorry, doubt I'll find much of that these days, although I still dev in Windows Forms most days of the week ), WPF?