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>
