8 transactions (4 requested), each up to 1024 blocks
average: 
  0ms waiting for transaction
  0ms request delay
  3037ms running transaction
  1ms transaction was being locked
  0ms flushing data (in ordered mode)
  2ms logging transaction
  2940us average transaction commit time
  2067 handles per transaction
  6 blocks per transaction
  9 logged blocks per transaction
