Radhika presented our current work on Recursively Cautious Congestion control yesterday at HotNets! Check it out!
The key idea is incredibly simple. Networks are underutilized, but TCP Slow Start only makes use of resources cautiously — sending out only 4-10 packets in the first RTT and ramping up from there. This leads to wasted capacity and flow completion times which are far below optimal. Our technique, RC3, allows senders to transmit at the full line rate from the first RTT, by sending traffic on top of what TCP normally sends with low priority of service. In our simulations of Wide Area networks, we found that this reduces flow completion times by 40-80%.
Traffic interception has certainly been a hot topic in 2013. The world has been focused on interception carried out the old fashioned way, by getting into the right buildings and listening to the right cables. But there’s actually been a significant uptick this year in a completely different kind of attack, one that can be [&]
Department servers and emails are down; here is the message:
> Dear EECS Community,
> As most of you know, UCB suffered a serious power outage this afternoon > which cascaded into a tunnel fire and explosion. We do not know when power > will be restored. Until it is, the buildings are locked and closed. It > would be best if people worked from home tomorrow, rather than coming in to > find the buildings locked. > > We will send notification as soon as we know if power is restored and the > buildings are going to open. > > Since the computing facilities in the building are down, none of the eecs > mailing lists are operational. Please forward this note to your students > and staff. > > You can find out more at www.berkeley.edu > > David E. Culler > Friesen Professor of Computer Science > Chair, Electrical Engineering and Computer Sciences > University of California, Berkeley >