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CPU time (or process time) is the amount of time that a central processing unit (CPU) was used for processing instructions of a computer program or operating...

GNU time) or as a shell builtin in most cases (e.g. in sh, bash, tcsh or in zsh). The total CPU time is the combination of the amount of time the CPU or...

minimize wasting CPU time by avoiding unnecessary task switching. In typical designs, a task has three states: Running (executing on the CPU); Ready (ready...

certain amount of processing time on the CPU. If the CPU has completed all tasks it is idle. Modern processors use idle time to save power. Common methods...

A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from...

the time at which a task finishes and the time at which the task started. Wall time is thus different from CPU time, which measures only the time during...

processing unit (CPU). A scheduler may aim at one or more goals, for example: maximizing throughput (the total amount of work completed per time unit); minimizing...

applications, deciding when they will receive central processing unit (CPU) time or space in memory. On modern personal computers, users often want to...

a utility or shell script with a particular CPU priority, thus giving the process more or less CPU time than other processes. A niceness of -20 is the...

round-robin scheduler generally employs time-sharing, giving each job a time slot or quantum (its allowance of CPU time), and interrupting the job if it is...

that have no real-time execution constraints) and handled CPU resource allocation for executing processes, aiming to maximize overall CPU utilization while...

thread leaving its CPU, another thread can always be found to run on that CPU, even if it is only the CPU's idle thread. The CPU time attributed to the...

implementation of CPUs have changed over time, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic–logic...

central processing unit (CPU), and is an essential feature of a multiprogramming or multitasking operating system. In a traditional CPU, each process - a program...

CPU shielding is a practice where on a multiprocessor system or on a CPU with multiple cores, real-time tasks can run on one CPU or core while non-real-time...

queues. The shift is dependent upon the CPU bursts of prior time-slices. If a process uses too much CPU time, it will be moved to a lower-priority queue...

hours of connect time, a charge for seconds of CPU time, and a charge for kilobyte-months of disk storage. Common systems used for time-sharing included...

processes to share processors (CPUs) and other system resources. Each CPU (core) executes a single process at a time. However, multitasking allows each...

criteria, and updates it periodically. Default ordering is by CPU usage, and only the top CPU consumers are shown. top shows how much processing power and...

computer science, a task, job or process is said to be CPU-bound (or compute-bound) when the time it takes for it to complete is determined principally...