Skip to content
/ cheatsheets Public

  • Sponsor ruanbekker/cheatsheets

    External links
    ko_fi
    ko-fi.com/ruanbekker

    Learn more about funding links in repositories.

    Report abuse

  • Notifications You must be signed in to change notification settings
  • Fork 148
  • Star 518

Files

Latest commit

ruanbekkerruanbekker
Add write and read tests with dd
Aug 10, 2023
798a9c6 · Aug 10, 2023

History

History

dd

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
README.md
README.md
Aug 10, 2023

README.md

dd cheatshet

Create Files

To create a 1GB file:

$ dd if=/dev/zero of=1g.bin bs=1G count=1

Benchmarking

Server Throughput (Streaming I/O):

$ dd if=/dev/zero of=/root/testfile bs=1G count=1 oflag=dsync

Server Latency:

$ dd if=/dev/zero of=/root/testfile bs=512 count=1000 oflag=dsync

Testing Write Speed:

# Set the block size to 1MB and copy 1000 blocks
dd if=/dev/urandom of=testfile bs=1M count=1000

Testing Read Speed:

dd if=testfile of=/dev/null bs=1M