Description

 rl repeatedly reads a single sector of a device and outputs the duration of the operation.

Installation

wget https://depot.gukinet.com/projects/rl/src/rl-1.0.tar.gz

tar -xzf rl-1.0.tar.gz 

cd rl-1.0

make

Usage

# ./rl /dev/sda
1458022392.529738 0.003467
1458022393.531320 0.004112
1458022394.533296 0.003195
1458022395.535681 0.003567
1458022396.537279 0.003293