bonnie++ -d <partition> -s <(RAM in MB) * 3>

Sequential Output Sequential Input Random
Seeks
Sequential Create Random Create
Machine Name Chunk Size Per Char Block Rewrite Per Char Block Files Create Read Delete Create Read Delete
MegaBytes K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU / sec %CPU /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
dropbox-new RAID-1024,00056310922050005110061715647789725271415579.7116++++++++++++++++++++++++++++++++++++++++++++++++
dropbox-new RAID-024,00049415831060302650293762826961166787317.2016++++++++++++++++++++++++++++++++++++++++++++++++
dropbox-new simul124,000322536239925181745741451521453773126.3016++++++++++++++++2251860++++++++++++++++++++++++
dropbox-new simul424,000322616239889181770641422022447033171.6016++++++++++++++++2815167++++++++++++++++++++++++
dropbox-new simul424,000326846240278181781641428621436452156.9016++++++++++++++++++++++++++++++++++++++++3181172
dropbox-new simul424,000322976239328181730641464522440612173.2016++++++++++++++++2364963++++++++++++++++++++++++
dropbox-new stagger124,000596439819852350742211220994327420859.3016++++++++++++++++++++++++++++++++++++++++++++++++
dropbox-new stagger224,000495118415256841444319194803057699412.6016++++++++++++++++++++++++++++++++++++++++++++++++
dropbox-new stagger324,0001993435134379382998962424136105498644.4016++++++++++++++++++++++++++++++++++++++++++++++++
dropbox-new stagger424,00021615384726913540359309384719733013309.8016++++++++++++++++++++++++++++++++++++++++++++++++