> 1. Check all things TCP for where they run. > There is also a subsystem type TCP, do you have this defined? Or is there > anything in service class SYSOTHER?
All TCP related STCs are running with SYSSTC, no address spaces in SYSOTHER. I don't have any subsystem type TCP defined in WLM, do I really need that? > 2. For us, on the systems with very few MSUs, it is virtually > pointless to define > different exvels with the same importance level. Hence I have > restricted us to > use exactly 5 service classes with exvel goals. That's similar to our policy, one exvel within one importance. > 3. How big is your discretionary pool? Are you using this > 'guaranteed cpu' (this > is the wrong name) feature that will give even discretionary > workload a chance to run? Only batch workload is DISCRETIONARY. During the day the online workloads (IMS and TSO) have priority, and in the night we have enough resources so DISCRETIONARY doesn't hurt. Do you mean the "CPU critical" flag for guaranteed cpu? > And to add even more unclear definitions, I remember a rule that > says 'don't define an exvel goal of less than 30% - bad things will > happen'. 30% of what? What is 100%? > 4. Do you use the SPM rules? Not yet. Do you see any advantage defining them? > 5. How do you issue your ping command? TSO? As an OMVS user? Batch? I > may have overlooked that, but why do you think it is *TCPIP* that is slow > instead of however the command gets to TCPIP (and the result back)? We did pings and tracerte from our PC to the mainframe (including a WAN of 1000km) and found out that only the segment from Mainframe to the first router has bad response times. Additionally we saw those dramatic increases of resp time always when capping was turned on. And RMF3 shows delays up to 70% for TCPIP for processor even under SYSSTC. Thanks, Werner Kuehnel ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
