dtop is a tool designed to measure system utilization of applications and system performance. It calculates system load by a subtractive method. A background soaking task is executed on all system CPUs. If some new applications take up a certain amount of the system computing power, the background program will lose those computing power accordingly. So the system utilization by the new applications can be evaluated from the lost.

Build

cargo build --release

Usage

Calibrate the system

dtop -c		// Calibrate the system with interval 1s.
dtop -c -i 5	// Calibrate the system with interval 5s.

Measure system utilization of an application every 1s

dtop -c		// Calibrate the system.
dtop		// Check the system utilization every 1s.
	... 	// Run an application on the system.

Measure system utilization of an application every 5s

dtop -c		// Calibrate the system.
dtop -i 5	// Check the system utilization every 5s.
	... 	// Run an application on the system.

Measure system utilization of an application with step mode

dtop -c		// Calibrate the system.
	... 	// Run an application on the system.
dtop -s		// Check the system utilization caused by the application.

Measure a system performance

dtop -m 1	// Check the measuring system perforance.

The score represents the residual system performance. It represents the whole system performance if there is no workloads running on the sytem. Performance scores of different systems can be compared with each other. A higher score means a better performance.