ODS 7.23UC5 and HP-UX 10.10

Hi all, I'm in the process of bringing up an Informix engine (7.23UC5) on an HP9000 K420 (HP-UX 10.10, 2 processors, 1 gb RAM, Model 20 RAID ARRAY). Aside from an shmat error (which I may have solved with Informix Tech Support, increase SHMMAX), this has been going rather well. I've gotten the distinct impression from lurking here that there are some definite performance problems with HP-UX 10.10. Can someone please expand on this, and is it a good idea to upgrade to 10.20? I've got the media, but have not installed it yet. A quick tuning question as well: assuming 2 processors, MULTIPROCESSOR 1 # 0 for single-processor, 1 formulti-processor NUMCPUVPS 1 # Number of user (cpu) vps SINGLE_CPU_VP 1 # If non-zero, limit number of cpu vpsto one NUMAIOVPS 2 # Number of IO vps I'm using these for testing purposes, and will be using KAIO in production. I'd assume that the only change I should make from these would be to set SINGLE_CPU_VP to 0. TIA for all assistance. Jeff Kalchik ---------------------------------------- Views expressed are my own, not necessarily 3COM's.