Memory Usage of DV vs Classic OBIEE Report - OAS 5.5

KN

Can someone help me understand this in more clear?

On OAS 5.5 memory and process usage when compared to DV and Classic report, I have few questions.

1. Does canvas on DV of OAS 5.5 use extra memory than a report on OBIEE classic home page.
2. Logs of the DV would be the same. if there are 4 reports on 1 canvas, so log will be there per report?
3. I believe there is something called XSA Cache, is this something DV leverages on?

Many thanks in advance

Regards,

KN