*ix systems in general, spend a higher proportion of time in "supervisor state" than z/OS. This is not a bad thing. The beans are merely counted differently. Much of what z/OS and is predecessors manage to charge back to a specific user is not done in *ix. CMG probably has some good reference materiel in the archives. Cheryl Watson would also have some good info.
ISTR some old numbers (without attribution) of +/- 50% supervisor state for *ix systems and +/- 10% for z/OS and predecessors.** **These numbers are about 10 years old may no longer be accurate. <snip> >On 5/14/2014 7:23 AM, Klein, Kenneth E wrote: >> What is the general opinion out there on what portion of CPU cycles should >> be spent in supervisor state? >> Is more than 50% a "bad thing"? > >I can't imagine >50% is either good or bad. It is what it is; entirely >dependent on the nature of the programs you are running at any given time. > It may also depend on the OS. I suspect Linux spends a smaller portion in supervisor state than z/OS. </snip> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
