2023 One of these things is not like the other Real refers to actual elapsed time User | Assignment Collections
Computer Science 2023 Python And C
2023 One of these things is not like the other Real refers to actual elapsed time User | Assignment Collections
One of these things is not like the other. Real refers to actual elapsed time; User and Sys refer to CPU time used only by the process. • Real is wall clock time – time from start to finish of the call. This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if it is waiting for I/O to complete). • User is the amount of CPU time spent in user-mode code (outside the kernel) within the process. This is only actual CPU time used in executing the process. Other processes and time the process spends blocked do not count towards this figure. • Sys is the amount of CPU time spent in the kernel within the process. This means executing CPU time spent in system calls within the kernel, as opposed to library code, which is still running in user-space. Like ‘user’, this is only CPU time used by the process. See below for a brief description of kernel mode (also known as ‘supervisor’ mode) and the system call mechanism. User+Sys will tell you how much actual CPU time your process used. Note that this is across all CPUs, so if the process has multiple threads it could potentially exceed the wall clock time reported by Real. Note that in the output these figures include the User and Sys time of all child processes (and their descendants) as well when they could have been collected, e.g. by wait(2) or waitpid(2), although the underly
We give our students 100% satisfaction with their assignments, which is one of the most important reasons students prefer us to other helpers. Our professional group and planners have more than ten years of rich experience. The only reason is that we have successfully helped more than 100000 students with their assignments on our inception days. Our expert group has more than 2200 professionals in different topics, and that is not all; we get more than 300 jobs every day more than 90% of the assignment get the conversion for payment.