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How to calculate bandwidth of harddisk with dd command

Publication Date:  2012-12-25 Views:  483 Downloads:  0

Issue Description

To test the bandwidth of a storage system, third-party is usually introduced, iometer, etc
this case is intended to introduce dd, which is build-in command in Linux, and easy to use

Alarm Information

N/A

Handling Process

1.read bandwidth test command:
dd if=/volume/file1 of=/dev/null bs=<block size> count=<number>

2.write bandwidth test command:
dd if=/dev/zero of=/volume/file1 bs=<block size> count=<number>

3.read and write bandwidth test command:
dd if=/volume/file1 of=/volume/file2

Root Cause

N/A

Suggestions

if you do not have any performance tools on hand, dd is an alternative

END