I'm asking the collective wisdom of the list the following because we're seeing absolutely CRAP response time running WebSphere under Linux under our recovered z/VM under the Recovery facility z/VM system.
The recovery vendor is running z/VM in Basic mode on a z/900 with all processors enabled and a boatload of memory. Resources do not appear to be a problem. 3 processors are defined to our z/OS guest. 2 Processors are DEDICATED to the guest we use to recover our z/VM environment. It is given the same amount of memory that we have on our z/VM LPAR usually has. I would like to know if people recover their VM under a recovery Vendor's VM, or the recover it running in an LPAR by itself, and the LPAR/IOCDS addressing differences are taken care of on that LPAR's VM image prior to recovering any Linux guests. When we start the initial WebSphere process at our DR vendor, what should take 10 minutes (Deployment manager startup) takes more than an hour. When we eventually got WebSphere all the way up, applications initialized, etc it all worked but exceptionally slowly. For example, an application that takes 1.5 seconds to display it's log-on screen took 3-5 minutes to show it. We took Java core dumps per IBM but ran out of time at the DR test to get everything they wanted, so I'm curious what people think about the results, and how much of it is VM under VM running Linux and then running Java. Theoretically under Basic mode, 2nd level of VM should NOT be encountering software SIE instruction execution. Currently I cannot convince our head systems programmer that it is valid to pursue our current configuration that is exhibiting the undesired behavior and trouble shoot it, as well as to create a Linux guest on the vendors base z/VM that runs at the same 'level' as our z/VM image executes. I personally believe the results will be enlightening regardless of what behaviour we see. If it vastly improves, it points at certain things in the z/VM under z/VM configuration, if it does NOT improve, it indicates a problem higher than the first level z/VM. Thanks for any insight into this. -J ---------------------------------------------------------------------- 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
