> I ask it as we have PI > 1 for critical STCs,batch and all the rest (and > in many cases by far > 1). When cpu is capped, all things goes very slow > (for instance deadlocks in DB2 increases, batch run forever, CICS tx > increase elapsed time and so on) and I think it's not they want. We > haven't > a SLA (at least until now) as regard response time, we have a SLA only for > being up and running. We aren't running always at 4-hour cap, we exceeeds > it for many hours. The only think having PI < 1 is TSO of system > programmers. ALL wlm classification is 'upwards' and this is not a good > thing according most of experts. > And other thins. > > And FYI I guess their job as they do for mine. I give them precise answer, > I'm still waiting theirs. I worked hard with WLM and system tuning in the > past for this reason I wonder if the system is OK. Anyway I asked for > papers, not your opinion if they're doing a good job. > > Max Scarpa >
I'm a capacity planner and performance analyst. IMHO if your PIs are consistently >1 then someone should be reviewing the WLM and considering the possibility of raising the cap. If you have some important workloads with PIs >1 and less important workloads with PIs <1 then an adjustment in the WLM goals would be in order. However, there are a couple of caveats with this. First, it would be management's decision as to whether the increase you'd pay in software costs for improving the performance is worth it. Secondly, you say you have no SLAs. Without any SLAs or at least some stated response time/batch turnaround goals, you have nothing to shoot for or measure against. At least some internally agreed upon goals should be put in place. Tom Kelman ***************************************************************************** If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. ***************************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
