Roger's HAR2009 talk on Tor performance
Jake, Mike, Karsten, Sebastian, and I attended Hacking at Random last week in The Netherlands. I did a talk on Tor performance challenges — basically walking through the key pieces of the "Why Tor is Slow" document that we wrote in March.
As usual with European hacking cons, they produced a really well-done video just days after my talk. So if you want to get the highlights on what we're doing to speed up Tor and what roadblocks remain, take a look at the video and also the slides that come with it.