This year was a mix too, with the main theme of cloud. (Though it turned out that cloud wasn't that prevalent). I think the best way to summarise the workshop would be concentrating on high performance and large scale (up as well as out). With talks from the likes of Amazon, Facebook and Microsoft we covered the gamut of incredibly large numbers of users (700 million) through eventual consistency (which we learnt may eventually not be enough!)
Now it's important to realise that you never go to HPTS just for the talks. The people are more than 50% of the equation for this event and it was good to see a lot of mixing and mingling. We had a lot of students here this time, so if past events are anything to go by I am sure we will see the influence of HPTS on their future work. And I suppose that just leaves me to upload the various presentations to the web site!