[Benchmark] Linux Software ATA RAID-1

Mother Board: PC-Chips M810LR
CPU: Duron 600MHz
RAM: 128MB SDRAM
Onboard ATA Controller
Kernel: 2.6.x

Activate the hidden port in the kernel:
some benchmarks

$ hdparm -tT /dev/hd{a,c,a,c,a,c}

/dev/hda:
 Timing cached reads:   572 MB in  2.00 seconds = 285.98 MB/sec
 Timing buffered disk reads:  152 MB in  3.00 seconds =  50.60 MB/sec

/dev/hdc:
 Timing cached reads:   572 MB in  2.01 seconds = 284.84 MB/sec
 Timing buffered disk reads:  142 MB in  3.03 seconds =  46.89 MB/sec

/dev/hda:
 Timing cached reads:   580 MB in  2.00 seconds = 289.98 MB/sec
 Timing buffered disk reads:  160 MB in  3.01 seconds =  53.19 MB/sec

/dev/hdc:
 Timing cached reads:   556 MB in  2.00 seconds = 277.98 MB/sec
 Timing buffered disk reads:  148 MB in  3.03 seconds =  48.81 MB/sec

/dev/hda:
 Timing cached reads:   580 MB in  2.01 seconds = 288.83 MB/sec
 Timing buffered disk reads:  152 MB in  3.00 seconds =  50.60 MB/sec

/dev/hdc:
 Timing cached reads:   568 MB in  2.00 seconds = 283.42 MB/sec
 Timing buffered disk reads:  142 MB in  3.02 seconds =  47.02 MB/sec

$ time hdparm -tT /dev/md{0,0,1,1,0,1}

/dev/md0:
 Timing cached reads:   564 MB in  2.00 seconds = 281.98 MB/sec
 Timing buffered disk reads:  162 MB in  3.01 seconds =  53.85 MB/sec

/dev/md0:
 Timing cached reads:   572 MB in  2.01 seconds = 284.28 MB/sec
 Timing buffered disk reads:  168 MB in  3.00 seconds =  56.00 MB/sec

/dev/md1:
 Timing cached reads:   572 MB in  2.01 seconds = 284.28 MB/sec
 Timing buffered disk reads:  156 MB in  3.00 seconds =  52.00 MB/sec

/dev/md1:
 Timing cached reads:   576 MB in  2.00 seconds = 287.98 MB/sec
 Timing buffered disk reads:  150 MB in  3.00 seconds =  49.93 MB/sec

/dev/md0:
 Timing cached reads:   584 MB in  2.00 seconds = 291.98 MB/sec
 Timing buffered disk reads:  168 MB in  3.00 seconds =  55.92 MB/sec

/dev/md1:
 Timing cached reads:   572 MB in  2.01 seconds = 284.84 MB/sec
 Timing buffered disk reads:  156 MB in  3.00 seconds =  51.93 MB/sec

real    1m19.831s
user    0m1.096s
sys     0m19.953s