Storage Device
|
Latency (sec/request)
|
Requests/sec
|
Bandwidth (bytes/sec)
|
Source
|
Floppy Drive
|
500ms
|
2
|
5KB/s - Horrible
|
Hazy memories
|
Modem
|
100ms (round trip)
|
10
|
5KB/s - Horrible |
"
|
DVD-ROM
|
150ms (seek time)
|
8
|
5MB/s - Sad
|
Experiment (in class)
|
Flash Drive
|
0.5ms
|
2000
|
13MB/s - Sad
|
Experiment (USB flashdrive)
|
Hard Disk
|
10ms
|
100
|
50MB/s - Decent
|
Experiment (laptop hard drive)
|
Gigabit Ethernet
|
100us
|
10,000
|
100MB/s - Decent
|
Experiment (powerwall)
|
RAM
|
50ns
|
20 million
|
2GB/s - Great |
Experiment (netrun Pentium 4)
|
Cache
|
1ns
|
1 billion
|
4GB/s - Great
|
Experiment (netrun Pentium 4)
|