But at the same time, understanding what the monitor is telling me is absolutely complex. It's a lot of data to make sense of, especially how it coorelates together. I can get a sense of it, but I'm not sure that if something was really wrong I would be able to pinpoint the issue.
-----Original Message----- From: Post, Mark K [mailto:[EMAIL PROTECTED] Sent: Thursday, December 02, 2004 7:53 PM To: [EMAIL PROTECTED] Subject: Re: Linux Slowdown Barton, You're absolutely right. Without data, all anyone can do is guess. I suspect the problem a lot of people are facing is that they don't (yet) have any sort of budget for a lot of the things they're trying out. I agree that anyone that has enough money to bring z/VM in house, but doesn't get a performance monitor to go along with it is just asking for trouble. But, some people don't yet have enough backing from management to do that. Too many people keep hearing that Linux is free (instead of Free), and they don't understand why it gets so expensive. Of course, doing things the right way has never been cheap, so I always wonder why they're surprised. But, Dilbert explains a lot of that, too. Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of Barton Robinson Sent: Thursday, December 02, 2004 4:27 PM To: [EMAIL PROTECTED] Subject: Re: Linux Slowdown I really DO hate to bring this up, but.... It really does solve a lot of mysteries to have a performance monitor that collects your linux and VM data. Right now, i'm looking at some SAP data, Linux on z/VM, a big linux server logs off and the master processor utilization sky rockets, then the i/o from all of the other servers stops for a minute. now i know why service was degraded, and have enough information to understand the problem. Without data, how could i have a clue of which one of 100 common problems caused my problem this time? ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
