On 6/14/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
I opened an incident with Velocity this morning and still haven't heard back from them.
Please look for those critters eating out of your inbasket... ;-) I know we responded to this a few hours after you opened the issue, asking you to upload the reports of a day (instead of asking you numbers one at a time). If it's high over shorter periods you might want to upload an hour of history data for us to look at.
Are there any ESAMON users out there who know which screen I can use?
This is probably less entertaining for those who don't have our products. My apologies. It is uncommon for CP to have a lot of overhead that is not charged to users, so there isn't an obvious place where we show that. But you could start at ESACPUA for example to verify that it is indeed CP doing things for users (user overhead) or doing things for itself (system overhead). Things "for itself" is for example scheduler, accounting, monitoring, etc. Some of that involves taking samples of all users and devices, and is sort of independent of the total usage (so it stands out on an idle system). I would not be alarmed if I saw 1-2% of a CPU used by system overhead. And because there is some "master only" work you might see the master CPU use a bit more. At some z/VM level I believe VSWITCH was also in this, but I am told it currently should be charged to the VSWITCH controller userid. There's lots of system metrics we would look at to understand what's making this higher than normal. Things "for users" is instruction simulation (diagnose, IUCV) and I/O for example. If that's high you normally spot one or two users with high numbers, and there's lot of per-user metrics that help understand why the user is causing that. It's not always enough to just look at T/V ratio, but you also want to relate that to total usage (for a user at 0.1% of a CPU, I am less upset about T/V ratio of 2 than when he runs at 100% of a CPU). Please send in some data so we can assist you in looking for the cause. Rob -- Rob van der Heij Velocity Software, Inc http://velocitysoftware.com/
