Another week in Delft... Next week will be the last one! Upon realizing this, on how fast time has passed, I had an urge to finish everything I have started working on and focus on some issues I can complete before leaving. This is not easy as it seems, since --as I have explained before--, there are a lot of interesting things to do. First, I finished some work I had started with Dr. Iosup analyzing traces of a well known Web-based game. This is one of the areas this lab is specially strong in, and I didn't want to miss the opportunity to work on that.
The work is really interesting, and it involves analyzing a pcap file (Packet capture, usually collected with a program like wireshark) containing thousands of ethernet frames, and trying to reconstruct what was really going on: when are resources sent and received, which sizes and frequencies they have, etc. For me, the most interesting side of it is the opportunity to go the the lowest possible level of network communication and understand how things work there. It turned out to be more complex that I expected: ethernet frames encapsulate IP packets, which encapsulate TCP packets, which encapsulate HTTP data. We are interested in the HTTP part, and this can be split between different TCP packets, for example... in the end, this is like a giant puzzle that needs to be solved (which was a lot of fun!!).
I have also worked on other areas, considering different job allocation and VM provisioning policies, and I think we have a solid idea that we can try to publish in the future. Next week I'll focus on that, and try to define our future collaboration for the next months.