You might try to get WLM/RMF reports on response times to get a base line Colin
On Thu, 14 Mar 2024 at 14:26, Jaime Fernandez < [email protected]> wrote: > Hi fellow listers, > > Newcomer here, so... I hope my question makes sense. > > We have some amount of business critical distributed online transactions, > running on enclaves into a Db2 zOS subsystem. Our current WLM configuration > assigns them a specific service class with importance 1 and a velocity > goal. > > We have been observing quite poor performance index for this service class > (and awful response times for those transactions) whenever the lpar shows > high cpu usage (on or around 100%) and specially when capping is on. > Performance index stays between 1 and 2 most of the time, with peaks over > 40. > > From what I have read so far, I understand velocity goals can be tricky > for short-term processes, and that gets worse with fewer logical > processors. Which happens to be our case, last year we brought in a z16 > with less capacity and processors than the previous machine. > > So, in your experience, could be a good idea switching to a response time > goal? > > Any insights would be most appreciated. > > Jaime > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
