On Fri 3/12/2004 3:35 PM, Rob van der Heij wrote: > With Linux, idle is not really idle. But you should be able to get a > bottom line measurement (e.g. 0.01% of a CPU). When you have plenty of > CPU on VM and the guest does not run the CPU flat out 100%, it must be > waiting for something (probably I/O, or maybe page faults on z/VM). > When you start enough guests on VM to create contention it will cause > the CPU to be taken away in the middle of the work, so the percentage of > wall clock time where you have work that wants to run will increase.
So as more guests use more CPU, you'd expect that wall-clock time for a guest's work to go up, but the number of ticks overall to pretty much stay the same, and same for the ratios between that guest's user/nice/sys/idle ticks? So "less work" gets done in a tick? Or perhaps the number of ticks to go down, but the ratios between user/nice/sys/idle won't vary much. So there are fewer ticks to get work done, but all buckets (user/nice/sys/idle) are hit equally? This, compared with what you would not expect to happen: user/nice/sys staying pretty much the same, but idle going down? ~ Daniel ----------------------------------------------------------------------- This message is the property of Time Inc. or its affiliates. It may be legally privileged and/or confidential and is intended only for the use of the addressee(s). No addressee should forward, print, copy, or otherwise reproduce this message in any manner that would allow it to be viewed by any individual not originally listed as a recipient. If the reader of this message is not the intended recipient, you are hereby notified that any unauthorized disclosure, dissemination, distribution, copying or the taking of any action in reliance on the information herein is strictly prohibited. If you have received this communication in error, please immediately notify the sender and delete this message. Thank you. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
