> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of John Eells > Sent: Tuesday, July 11, 2017 4:29 AM > To: [email protected] > Subject: Re: EAV volumes and SYSRES > > Gibney, Dave wrote: > > z/OSMF assumes access to zIIP. Otherwise, the Java CPU load on general > CP's impacts the SCRT reports, or runs up on the cap. > <snip> > > There is negligible idle load imposed by the z/OSMF server; it uses > significant > CPU only when you do something with it. I just checked again using RMF > Monitor III (RMFWDM) on our current level of z/OS V2.3 code. As I started to > compose this note, I looked at its CPU usage, and I did so again after several > minutes had elapsed. It hadn't budged. > > I believe this has been the case since we switched to WebSphere with the > Liberty profile some time ago. Another interesting datum is that has used > about 20% more zIIP time than CP time since the last server start. > > But, just to make sure it was actually working (hey, it's a system in z/OS > System Test, after all!), I logged into z/OSMF. That was not enough to make > the numbers move, either. > > So, I defined a new (fairly small, about 150 data seats) software instance to > drive discovery by a pattern, which does a bunch of Catalog and > CVAF/DADSM operations to locate data sets by high-level qualifier, and went > back to check again. It had ticked up by a bit less than two tenths of a CPU > second total, the sum of zIIP time and CP time. I'll grant that this is on a > top > end processor, but this is still not moving the needle by much; you can barely > see it twitch. > > The heavy lifting (data movement) for Software Management is currently > done in batch. I have not run a side-by-side comparison of CPU consumption > for ServerPac and z/OSMF Software Management deployment operations, > and I don't plan to, but the former is certainly nonzero, and the latter does > not involve a huge amount of frequent activity. > Also, Software Management should use less resource when you model after > previous deployments (as many likely do in ServerPac, too, by "merging > with" a saved configuration).
Thank you for this information. It could make this barely palatable. Still, I've not even installed z/OSMF or Liberty. Running z/OS 2.1 now. Doubt my installation will even exist by the time someone needs to that it beyond 2.3 > > -- > John Eells > IBM Poughkeepsie > [email protected] > > ---------------------------------------------------------------------- > 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
