Paul, No, which is why products such as ESALPS can work. VM has the only accurate viewpoint of what resources each guest is consuming, so any measurements need to start there. The whole goal of VM is to provide each guest with the illusion that it's got an entire machine all to itself. A necessary result of that is that no guest can possibly tell what real resources it is using, unless it asks VM for the information.
Mark Post -----Original Message----- From: Paul Kaufman [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 23, 2002 8:26 AM To: [EMAIL PROTECTED] Subject: Linux S/390 Monitor Are the measurements that z/VM provides on guest machine (Linux server) resource usage also incorrect? On Monday 22 July 2002 14:59:48 PDT, Barton Robinson wrote: > There are some issues with monitoring linux under VM - the > numbers are not quite right, well, they can be absolutely > wrong. > > Linux does accounting and CPU measurements for processes, etc as > if Linux owns 100% of the processor resource. Thus all of your > Linux CPU numbers will be inflated. My example that I've > presented at SHARE, IBM Tech conferences and assorted other > meetings, shows Linux off by 1 order of magnitude. (This > includes TOP, other agents, any way you like to measure Linux > CPU) If you would like valid linux performance numbers when > running on VM, the only solution on the market (i'm pretty darn > sure) is ESALPS, from Velocity Software (long time vendor of VM > performance products....), and for the last 14 years, Velocity > has ALWAYS supported new releases of VM. <snip>
