How can it? Unless it's the highest priority. And, shades of Heisenberg, what about itself? - -teD
300,000 Kilometres per Second Not only is it a good idea! It's the LAW!!! -----Original Message----- From: Ed Gould <[email protected]> Sender: IBM Mainframe Discussion List <[email protected]> Date: Fri, 31 Jan 2014 23:28:08 To: <[email protected]> Reply-To: IBM Mainframe Discussion List <[email protected]> Subject: Re: CPU time Ted: At one time (MVS) there was a product called QCM. Which did measure precisely the amount of CPU time that was used by the task and by MVS. Alas it is (AFAIK) no longer marketed. Ed On Jan 31, 2014, at 11:12 PM, Ted MacNEIL wrote: >> vm370 did accurately track time used ... but mvs is quite a bit >> sloppier ... which gives rise to "capture ratio" ... ratio cpu >> accounted > for compared to total cpu busy. > > I've been doing capacity planning since 1981. > VM is better than MVS, but it's not 100% accurate. > > No software monitor can be. > - > -teD > > 300,000 Kilometres per Second > Not only is it a good idea! > It's the LAW!!! > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
