We have had ongoing intermittent performance issues with InfoLease for many months now. Recently the problems have become worse, especially at monthend. Users and customers are complaining and we're out of ideas. I'm hoping someone can point us in a direction that will get us to the root cause. I won't go into all the details, but here is some information on what we're seeing and what we've done.
Application: InfoLease O/S: AIX 5.2.0.0 DB version: UniData 6.0.8 Disk: EMC HW: IBM P670 with two LPARs. One for production, the second cloned nightly for reporting. * Both online and batch processing/reporting have taken a dive at various times. Isssues used to be primarily a day or two before and after monthend, but we're creeping farther into the month as time goes on. * Slowness only affects InfoLease activity. Shell activity seems unaffected. * EMC (disk) tells us we are nowhere near taxing their system and read/write response times are in the 5-8 ms range * At the same time EMC says we're fine, AIX (filemon) indicate significant read/write waits * Nmon regularly indicates a high number of CPU waits, but I've never been able to map that back to user experience * When we experience slowdowns we may/may not be able to pinpoint a process or group of processes causing the problem. * Resizing seems to have pretty much resolved our batch processing but hasn't helped online activity. Udtmon still shows a surprising amount over Overflow 2 activity. We're investigating, so maybe we have more work to do there. Does anyone know what a system in overflow 2 looks like to the O/S? Maybe a higher number of reads? It seems as if there is a bottleneck that noone can identify. Aside from periodic AIX read/write waits nothing shows any problems. TIA Brad Schrag InfoLease Development ------------------------------------------------------------------------------ Electronic Privacy Notice. This e-mail, and any attachments, contains information that is, or may be, covered by electronic communications privacy laws, and is also confidential and proprietary in nature. If you are not the intended recipient, please be advised that you are legally prohibited from retaining, using, copying, distributing, or otherwise disclosing this information in any manner. Instead, please reply to the sender that you have received this communication in error, and then immediately delete it. Thank you in advance for your cooperation. ============================================================================== ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/
