Where could I find the presentation you are talking about? Thanks..
Paul -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of David Boyes Sent: Monday, November 19, 2007 9:20 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: VMRM? > How many out there have implemented the VM Resource Manager? Here's one. > Happy with > it? Any tips or gotchas? It works as specified, adjusting both up and down. It's just a little limited. IMHO, VMRM seems half-finished -- it's not z/OS WLM by any stretch, and it's missing some pieces. The CPU goal processing works, but it's fairly inflexible, and it's not very clear how you could dynamically adjust target workload groups w/o a restart of VMRM (which resets the goal targets). The I/O goal processing seems fairly ineffectual, but maybe I just don't have the right workloads for it to be effective. If you're going to enable VMRM, be sure to get a copy of Chris Casey's presentation on the topic. The algorithm used to adjust priorities is really, REALLY non-intuitive -- Chris's presentation explains it much better than the docs do. Steve Wilkins has given it the last few times I'm aware of an opportunity. I think Chris may have retired recently. If so, I'm not sure who has taken VMRM up as maintainer. It's also not really clear what role it plays in the bigger IBM Director plan -- it has some role in that, but I don't understand what it is.
