<P> A key characteristic of an RTOS is the level of its consistency concerning the amount of time it takes to accept and complete an application 's task ; the variability is jitter . A hard real - time operating system has less jitter than a soft real - time operating system . The chief design goal is not high throughput , but rather a guarantee of a soft or hard performance category . An RTOS that can usually or generally meet a deadline is a soft real - time OS , but if it can meet a deadline deterministically it is a hard real - time OS . </P>
<P> A key characteristic of an RTOS is the level of its consistency concerning the amount of time it takes to accept and complete an application 's task ; the variability is jitter . A hard real - time operating system has less jitter than a soft real - time operating system . The chief design goal is not high throughput , but rather a guarantee of a soft or hard performance category . An RTOS that can usually or generally meet a deadline is a soft real - time OS , but if it can meet a deadline deterministically it is a hard real - time OS . </P>
a required characteristic of an online real-time system is
a required characteristic of an online real-time system is
the level of its consistency concerning the amount of time it takes to accept and complete an application 's task
the level of its consistency concerning the amount of time it takes to accept and complete an application 's task