Edited Unassigned: Performance Regression on DbSet.SaveChanges [1626]

After looking at the performance of a sample application that simply adds entities to an empty database and comparing performance using EF5 and EF6, it appears that DbSet.Add takes significantly longer

10000 entities:
1:00 on EF5
1:30 on EF6
100000 Entities:
8:51 on EF5
12:25 on EF6

for EF6 I have tested with a local release build from master (9/4), a signed nightly (8/28), and a build from the RTM branch (9/4)