Mark wrote in reply to Skip: > >IBM pointed us to OA12185, which recommends this value for available frame > >queue: MCCAFCTH=(4000,4500) . What's startling about this recommendation is > >that it's ten times (!) the default value of MCCAFCTH=(400,600) . We're > >concerned that such a high value will increase paging rates considerably. > >Maybe it's overkill. > > > >Any thoughts? > > > > How much real storage do you have on the LPAR in question? It's probably > a nit for large LPARs (like the ones you most likley care about). > If you followed some of the recommendations for RSM problems when > 64-bit came along, you set it back then also. I think we talked about > this one at SHARE in Boston in the EWCP free for all. > > BTW, ours is set at 5000,6000 in one of our large sysplexes. The > bigger LPARs in that sysplex have 20G-25G of real.
As a side contribution, we were one of the customers that got bit by this originally. Even on small systems (4Gig and 6Gig) we were unable to discern any adverse impact of these higher settings. If you need these settings, just do it - I can't imagine you'll even know about it. Shane ... ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
