operating time; run time
Technical term in computing for the duration a device, program, or process is active or takes to complete an operation.
The operating time of this program is about 3 seconds.
I changed the settings to extend the battery's operating time.
稼働時間 is more general for machinery or equipment uptime, while 動作時間 is often used in computing for software or electronic device operation duration.
dead time
Compound of 動作 (operation, movement) and 時間 (time). A straightforward technical term formed from Sino-Japanese elements.