ftp# iozone -s16g -r1m -w -i 0 -i 1 -i 2 -t 1 -k64 -F da0s1
        Iozone: Performance Test of File I/O
                Version $Revision: 3.370 $
                Compiled for 64 bit mode.
                Build: freebsd

        Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
                     Al Slater, Scott Rhine, Mike Wisner, Ken Goss
                     Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
                     Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
                     Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,
                     Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,
                     Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer.

        Run began: Sun Jul 10 16:35:17 2011

        File size set to 16777216 KB
        Record Size 1024 KB
        Setting no_unlink
        POSIX Async I/O (no bcopy). Depth 64
        Command line used: iozone -s16g -r1m -w -i 0 -i 1 -i 2 -t 1 -k64 -F da0s1
        Output is in Kbytes/sec
        Time Resolution = 0.000001 seconds.
        Processor cache size set to 1024 Kbytes.
        Processor cache line size set to 32 bytes.
        File stride size set to 17 * record size.
        Throughput test with 1 process
        Each process writes a 16777216 Kbyte file in 1024 Kbyte records

        Children see throughput for  1 initial writers  =  254419.47 KB/sec
        Parent sees throughput for  1 initial writers   =  250392.74 KB/sec
        Min throughput per process                      =  254419.47 KB/sec
        Max throughput per process                      =  254419.47 KB/sec
        Avg throughput per process                      =  254419.47 KB/sec
        Min xfer                                        = 16777216.00 KB

        Children see throughput for  1 rewriters        =  283979.62 KB/sec
        Parent sees throughput for  1 rewriters         =  278866.00 KB/sec
        Min throughput per process                      =  283979.62 KB/sec
        Max throughput per process                      =  283979.62 KB/sec
        Avg throughput per process                      =  283979.62 KB/sec
        Min xfer                                        = 16777216.00 KB

        Children see throughput for  1 readers          =  184481.77 KB/sec
        Parent sees throughput for  1 readers           =  184477.21 KB/sec
        Min throughput per process                      =  184481.77 KB/sec
        Max throughput per process                      =  184481.77 KB/sec
        Avg throughput per process                      =  184481.77 KB/sec
        Min xfer                                        = 16777216.00 KB

        Children see throughput for 1 re-readers        =  219862.97 KB/sec
        Parent sees throughput for 1 re-readers         =  219854.84 KB/sec
        Min throughput per process                      =  219862.97 KB/sec
        Max throughput per process                      =  219862.97 KB/sec
        Avg throughput per process                      =  219862.97 KB/sec
        Min xfer                                        = 16777216.00 KB

        Children see throughput for 1 random readers    =   55092.36 KB/sec
        Parent sees throughput for 1 random readers     =   55091.93 KB/sec
        Min throughput per process                      =   55092.36 KB/sec
        Max throughput per process                      =   55092.36 KB/sec
        Avg throughput per process                      =   55092.36 KB/sec
        Min xfer                                        = 16777216.00 KB

        Children see throughput for 1 random writers    =  260702.53 KB/sec
        Parent sees throughput for 1 random writers     =  249329.23 KB/sec
        Min throughput per process                      =  260702.53 KB/sec
        Max throughput per process                      =  260702.53 KB/sec
        Avg throughput per process                      =  260702.53 KB/sec
        Min xfer                                        = 16777216.00 KB