Serverlogs of Tiles beeing served for P2P-Simulation

i am currently writing on my diploma thesis, which is loadbalancing in Peer to Peer Networks. The practical implementation part will be a P2P-Network of Tile-Servers with a full renderstack (PostGis->Mapnik->Tirex->Mod_tile) on each peer. I will use this Network to evaluate different load measure methods. The Simulation will run on Servers of my university. To make these tests more realistic i am looking for real server logs describing which tile (x,y,z) at what time was served. Is there anybody who could give me a hint where i can find something like this?

The theme seems also to be interisting for the OSM -Projekt:

Thank you for your help.
Best Regards Stefan