User time is the amount of time the CPU was busy executing code in user space.
A software application executed on a hexa-core processor creates three Unix processes for sun herald casino news the user requirement. With Linux starting from kernel 2. When attempting to book an appointment, if the requestor knows ahead of time which schedulable resources are required, then identifying individual slots from the resources' schedules prior to creating the appointment is appropriate.
Total CPU time[ edit ] On multi-processor machines, a computer program can use two or more CPUs for processing using parallel processing scheduling. The slots in a schedule do not need to be the same size, and can be different for different days of the week.
Moreover, depending on what exactly the CPU was doing, the reported values can be subdivided in: If the process is multithreaded, the CPU time is the sum for all threads. This resource is referenced by appointment Slot instances do not have any recurrence information included.
A slot can be marked as over-booked indicating that there are too many appointments allocated to it.
Subdivision[ edit ] CPU time or CPU usage can be reported either for each threadfor each process or for the entire system. If this value is reported for a thread or process, then it represents the amount of time the kernel was doing work on behalf of the executing contextfor example, after a thread issued a system call. In some situations a service may have a specific set of slots reserved for specific uses, such as "walk-ins" or a specific organization has a "standing booking" for Thursday mornings.
Elapsed real time was 1. These should be represented using the appointmentType field with a specified and agreed value.
They do not provide any information about appointments that are available, just the time, and optionally what the time can be used for. CPU time and elapsed real time for parallel processing technology[ edit ] If a program uses club regent casino phone number processingtotal CPU time for that program would be more than its elapsed real time.
Computation is distributed evenly on the 6 independent threads. Security Permissions or specific business rules on the system could enforce that only eligible appointments are allocated to them.
System time is the amount of time the CPU was busy executing code in kernel space. An example of this type of usage could be where the slot is being used for a group service that permits 5 participants at the same time. The following is the source code of the application nextPrimeNumber which was used in the above example.
Not linked to any defined compartments A slot of time on a schedule that may be available for booking appointments.
Idle time for the whole system only is the amount of time the CPU was not busy, or, otherwise, the amount of time it executed the System Idle process. A slot can have more than one appointment allocated time slot usage it.
Slots can also be marked as busy without having appointments associated. A scheduling system may permit multiple allocations up to a specific number of places.
Note that booking an appointment does not necessarily time slot usage that slot resources casino sbm identified. Steal time for the whole system onlyon virtualized hardware, is the amount of time the operating system wanted to execute, but was not allowed to by the hypervisor.
If recurring information is desired, this will be managed outside these resources, or included as extensions.
As appointments fill up the schedule, these slots would individually be marked as busy as the appointments are filled into the slots.