fsfs7/unpacked     fsfs6/unpacked      fsfs7/packed     fsfs6/packed
svnadmin dump          525.967          456.090             934.995         563.308
svn log http://          7.915            9.461              11.941          13.952
svn log file://          2.823            2.783               6.742           8.004
svn export http://       8.302            7.623              24.894           8.357
svn export file://       6.774            4.272              22.385           4.711

Environment:                
Windows Server 2012 R2 (x64)                
2 GB RAM, with 2 virtual processors hosted on Macbook with SSD disk
Subversion 1.9.0-dev from trunk@r1605444
Test data: Ruby project repository (46054 revisions, 400mb-500mb size on disk)

All tests are performed using default options.
Every test was run 3 times and only two latest used
Tests performed:
1. svnadmin dump >nul
2. svn log http://localhost/svn/repo >nul
3. svn log file:///D:/Repositories/repo >nul
4. svn export -q http://localhost/svn/repo/trunk wc
5. svn export -q file:///D:/Repositories/repo/trunk wc