Thanks, I isolated the high CPU to a particular Linux guest. Unfortunately it must be looping pretty good because I cannot get a response from it to isolate the problem any further.
Peter Neale Ferguson <[EMAIL PROTECTED]> Sent by: Linux on 390 Port <LINUX-390@VM.MARIST.EDU> 08/16/2006 10:23 AM Please respond to Linux on 390 Port <LINUX-390@VM.MARIST.EDU> To LINUX-390@VM.MARIST.EDU cc Subject Re: Command to determine guest cpu usage Here's my 2 cents worth. I'm sure in the next hour or so there'll be a heap of other suggestions. Apart from the obvious philosophical lament: "you need a performance tool", there are a few thing you can look at. Most of these commands have some lag and some smoothing with what they are reporting but they're a start. What are you experiencing: a heap of users having their response times get longer and longer? It may not be a runaway user but something about your configuration. To start with: What is the system doing as a whole: #CP IND Are you seeing high page, migrate rates or is the Eligible list filling? If you have a lot of big guests you may have filled up the area under the 2GB bar so the system is doing a bucket load of thrashing to move pages around just to let you do I/O. #CP IND Q What users are appearing in there? If you are an MP configuration what users (other than the one issuing the IND Q) appears with R00 or R01 next to the name? Do you have a suspect? If so use IND USER <username> and have a look at the VTIME and TTIME entries. Do this a few times over the course of several seconds and see if that figure is increasing almost by as much as the interval between indicates. If so then this user may be the culprit. (But it may be a production server who's supposed to behave like this.) But better still: get a performance tool that will warn you when there are runaway users. It will also help you establish "what's normal" so you can really tell if there's something screwy going on. If you're loosing productive work by a rogue guest then you can justify the cost of these tools very easily. Neale -----Original Message----- My z/VM Version 5.1 LPAR cpu usage is unusually high. I suspect that one of my Linux guest is going nuts. Is there a z/VM command that will lead me into the right direction? Thanks. ---------------------------------------------------------------------- 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 This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Pepco Holdings, Inc. or its affiliates ("PHI"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. PHI policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. PHI will not accept any liability in respect of such communications. ---------------------------------------------------------------------- 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
