> We have a WLC licence for our z890 machine. It's becoming very frequent > that this machine is capped, even for many hours due to 4-hour rolling > average exceeding the capping limit. According to someone all is ok, > according my humble opinion this is not true, WLM should be changed to > accomodate our workload, but unlukily I'm not a z/OS sysprog, I'm only the > shop boy. > This is a classic situation since back in the 1960's. WLM and those tuning parameters before it do what the installation wants. I understand the cap being placed to control costs and one solution is for your SYSPROGs and also your DB2 folks to tune. The less the operating system software and DB2 overhead system tasks takes, the more is available for the users. I have contended since the 1970s that the SYSPROGs are the last to tune a system (not a bad thing). I could hide capacity and when management needed extra time to plot the upgrade, tuning got us through the crunch time. Running out of gas with no options was not an option when US Government procurements could take many months to a year or more. Besides that little bit of pain suffered by the users, was a signal to management, that things were starting to get constrained; users also saw the signs. Of course, the systems guru made it better for a while until the pain returned. Then more work was needed to further tune while greater pain was being felt. The cycle continued until it was "just out of gas".
So if you are tuned the the nth degree and still WLM is causing performance problems, then change WLM to "not do something" and see what happens. Maybe a bit more money to raise the WLC cap will come along. If not, then they will suffer. Jim ---------------------------------------------------------------------- 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
