What are Kernel Times?


by Crumbles
Tags: kernel, times
Crumbles
Crumbles is offline
#1
May23-05, 03:59 AM
Crumbles's Avatar
P: 135
I've recently noticed that there is a 'Show Kernel Times' option in Windows XP's Task Manager under the 'Performance' tab. This shows up as a red meter over the green 'CPU Usage' meter.

I gathered that the Kernel is a piece of software that allows the operating system to multi-task but what exactly is the 'Kernel Times'?
Phys.Org News Partner Science news on Phys.org
SensaBubble: It's a bubble, but not as we know it (w/ video)
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Microbes provide insights into evolution of human language
so-crates
so-crates is offline
#2
May23-05, 04:15 AM
P: 309
I'd imagine its the percentage of resources (CPU/Memory) spent on the kernel and not user level processes.

The kernel is the coure part of the operating system that handles process/thread scheduling, memory management, and device I/O, among other (not as critical) tasks.
Crumbles
Crumbles is offline
#3
May23-05, 04:44 AM
Crumbles's Avatar
P: 135
Thanks for the reply so-crates, I suppose that would indeed make sense: the portion of the processor used by the kernel. It doesn't seem like the kernel shows up as a process under the 'Processes' tab though, unless it's under some odd name.

ramollari
ramollari is offline
#4
May24-05, 02:51 AM
P: 453

What are Kernel Times?


It is the percentage of processor time taken as system calls to the Operating System.
so-crates
so-crates is offline
#5
May25-05, 03:54 AM
P: 309
I don't think it would just be user-level calls to the OS (things like file access) Remember that in a modern preempted multitasking OS, the kernel process (or processes, in some cases) interrupts (i.e., "preempts") other processes in the middle of what there were doing so it can do thread scheduling among other things.


Register to reply

Related Discussions
Kernel of the Transpose Linear & Abstract Algebra 3
Basis of the kernel... Linear & Abstract Algebra 3
Proof of Exponential Interarrival times times Set Theory, Logic, Probability, Statistics 2
The Kernel of Z (mod 24) X Z (mod 81) Calculus & Beyond Homework 16
kernel basis Linear & Abstract Algebra 6