Hi Martin how is it ? We're in V7, I suppose you warned about 2 Gb limit. If the case, I can assure you we're quite far from 2GB limit...
Anyway you've said that there were highly variable results (in tests and in late 80s) which means that sometime things went better and sometimes things worsened (about cpu usage I presume). Is it correct ? Max Scarpa Martin Packer <[EMAIL PROTECTED]> Sent by: IBM Mainframe Discussion List <[email protected]> 07/11/2007 15.23 Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject Re: Real storage usage - a quick question Two things.... Caution about any case resting on saving CPU by eliminating I/O. Back in the late 1980s a series of IBM studies showed highly variable results in this area. Though the technology has (at least in part) rolled a number of times I'd still take home the same lesson. In z/OS R.8 the cost of memory management got improved because of the RSM rewrite. I'd hazard that any management cost scaled better with memory size... As that was the whole point of the rewrite. Oh, alright then, three things... :-) Caution should be applied on DB2 Virtual Storage when scaling the buffer pools up - if you're on DB2 Version 7. Martin Martin Packer Performance Consultant IBM United Kingdom Ltd +44-20-8832-5167 +44-7802-245-584 [EMAIL PROTECTED] Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
