On Tue, Nov 4, 2008 at 3:44 AM, Mike Hammock <[EMAIL PROTECTED]> wrote:
> Rob, it is certainly possible that they may have to end up adding more page > packs, but the STORBUFF setting has been effectively "hiding" that issue, > if indeed it is an issue. I've seen a couple of systems where they were > having this problem and had assumed that they had a paging problem. > Naturally, they added some page packs and, just as naturally, it did no > good. Once they fixed STORBUFF they already had plenty of page packs to > last quite a while. That would be the more pleasant order of events. Move your feet out of the way before you remove the safety pin. With a typical Linux workload, the default STORBUF makes CP hesitate long before you really page. So when you adjust STORBUF, you may still not page a lot and you think you can get away with not adding paging space. Until the point where you add more virtual machines and take a PGT004 abend. Because of both Linux and VM doing memory management, when you start to page you will end up paging a large part of your total virtual storage. Not just that last Linux server you added. I'm telling folks about the cup of coffee on the table. You can push it towards the edge for a long time without any damage. But once you cross the line, you spill all the coffee. Not just the portion that was sticking out over the edge of the table. Rob -- Rob van der Heij Velocity Software http://velocitysoftware.com/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
