N
njal@99x.no
Guest
We are in the process of migrating from a power 7 LPAR, Aix 7.1 SP1, OpenEdge 11.3 SP2 - Power 8 LPAR, Aix 7.1 SP3, OpenEdge 11.3 SP3.. We are struggling very much with overall performance. We have a batch (night) job that is taking 4 hours on the old system that is somewhere between 12 and 16 hours on the new. The new system has a disk-layout optimized for concurrency and has done 100k IOPS with ndisk64 testing (multithreaded), blowing the old system out of the water. The main difference beeing multiLUN/Paths/Filesystems - the new having more of all. Single-treaded (single inflight IOs) ndisk64 testing has similar latency/IOPs counts between the platforms. The new system does not seem to be starving on CPU or memory. (It has more of both than the old) Is there any hidden OpenEdge best practices for AIX somewhere? Tips and tricks greatly appreciated!
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