On Fri, 2 May 2008 10:53:02 -0500, Kelman, Tom <[EMAIL PROTECTED]> wrote:
>We run Connect:Direct (used to be called NDM) from Sterling Commerce. >Yesterday afternoon the started task, CDNDM, took from 50-60% of an >engine on our z9BC for almost 2 hours while it transferred a large file. >This caused us to hit our softcap and affected other tasks in the >system. We have the CDNDM task running in our STCLO service class which >is set for Vel=50 and an importance level of 4. It was still running at >a high DP and grabbed the CPU. I can't understand why a task that is >basically transmitting a file over the network should need this much >CPU. My only explanation might be that it is compressing the data >before putting it on the network and the compression algorithm isn't the >most efficient in the world. > > Hello... VOL=50 basically means half an engine! (I have no idea how many engines you have). Of course this assumes other more important work is getting done. But my point is VEL=50 is very high for an IMP=4 workload (IMO). Are you sure other higher important work wasn't meeting goals (what do RMF reports or RMF III tell you). If they weren't then you probably shouldn't have seen NDM's DP higher than the work that was missing goals. I say "probably"... not definitely because WLM won't make the DP higher if it doesn't think it will help (other factors causing delay). > >Has anyone else had this kind of a problem running Connect:Direct? >What, if anything, did you do to control it? > There are lots of things you can do / try. Lower the velocity, Imp=5, discretionary, resource group with a MAX. Maybe the work that had problems is also not classified correctly (as opposed to this work). Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[EMAIL PROTECTED] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- 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
