dd

Disk - dd

Library : subprocess

dd : convert and copy a file

man : http://man7.org/linux/man-pages/man1/dd.1.html Options

• bs=BYTES read and write up to BYTES bytes at a time (default: 512); overrides ibs and obs
• if=FILE read from FILE instead of stdin
• of=FILE write to FILE instead of stdout
• count=N copy only N input blocks

Lambda payload(test-event) example:

{
    "bs": [BYTES],
    "count": [COUNTS]
}

Lambda payload : latency, block bandwidth(mb/s)