Good to have you among us Mousa. Thanks for the contribution; link & summary would have been sufficient (at least visually :P)
On Sun, Mar 9, 2008 at 11:48 PM, m3lyan <[EMAIL PROTECTED]> wrote: > > Summary ( important section) > ***** > A four- > processor machine can be visualized as a four-lane freeway. Each lane > provides the path on which instructions can execute. A vehicle can > represent those instructions. Additionally, there are vehicles on the > entrance lanes ready to travel down the freeway, and the four lanes > either are ready to accommodate that demand or they're not. If all > freeway lanes are jammed, the cars entering have to wait for an > opening. If we now apply the CPU percentage and CPU load-average > measurements to this situation, percentage examines the relative > amount of time each vehicle was found occupying a freeway lane, which > inherently ignores the pent-up demand for the freeway--that is, the > cars lined up on the entrances. So, for example, vehicle license XYZ > 123 was found on the freeway 30% of the sampling time. Vehicle license > ABC 987 was found on the freeway 14% of the time. That gives a picture > of how each vehicle is utilizing the freeway, but it does not indicate > demand for the freeway. > > Moreover, the percentage of time these vehicles are found on the > freeway tells us nothing about the overall traffic pattern except, > perhaps, that they are taking longer to get to their destination than > they would like. Thus, we probably would suspect some sort of a jam, > but the CPU percentage would not tell us for sure. The load averages, > on the other hand, would. > > This brings us to the point. It is the overall traffic pattern of the > freeway itself that gives us the best picture of the traffic > situation, not merely how often cars are found occupying lanes. The > load average gives us that view because it includes the cars that are > queuing up to get on the freeway. It could be the case that it is a > nonrush-hour time of day, and there is little demand for the freeway, > but there just happens to be a lot of cars on the road. The CPU > percentage shows us how much the cars are using the freeway, but the > load averages show us the whole picture, including pent-up demand. > Even more interesting, the more recent that pent-up demand is, the > more the load-average value reflects it. ***** > > > -- abulyomon www.KiLLTHeUPLiNK.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Jolug" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Jolug?hl=en-GB -~----------~----~----~----~------~----~------~--~---
