04/02/04 22:37 zThKFNHH
計ってみた。
HDD:
# hdparm -t /dev/hda
/dev/hda: Timing buffered disk reads: 32MB in 2.96 secs = 10.81 MB/sec
USB Flash:
# hdparm -t /dev/sda
/dev/sda: TIming buffered disk reads: 32MB in 34.22 secs = 0.94 MB/sec
RAM:
# time dd if=/dev/zero of=/dev/shm/test bs=1k count=32768 ＃RAM
32768+0 records in
32768+0 records out
real 0m0.495s
# echo -e "scale=2 \n 32/0.495" | bc
64.64
CF
# hdparm -t /dev/hde
/dev/hde: Timing buffered disk reads: 32MB in 27.43 secs = 1.17MB/sec