Hi, On Thu, Sep 9, 2010 at 12:00 AM, Bond <jamesbond.2k.g@xxxxxxxxx> wrote: > > > On Thu, Sep 9, 2010 at 12:04 PM, Dave Hylands <dhylands@xxxxxxxxx> wrote: >> >> The kernel has the notion of "going idle". This happens whenever there >> is nothing to do. > > Hi Dave from your message I want to ask going idle suppose I am having a > Linux box on my system. > Then display manager,polling and other things are constantly happening which > are being handled by the CPU so when does > the kernel goes idle I am not able to understand how can kernel be idle. Well, check your CPU usage. It's probably less than 100%. Let's say it's at 46%. That means that the system is spending 54% of its time "doing nothing" or being idle. >From a macroscopic level, it looks like the CPU is busy. But from a microscopic level, the kernel is spending 540 millseconds out of every second waiting for something to happen. Those 540 milliseconds are when the kernel is idle. -- Dave Hylands Shuswap, BC, Canada http://www.DaveHylands.com/ -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
