Re: onconfig recommendations

mosserp@wellsfargo.com wrote: >>> RESIDENT 0 # Forced residency flag>>> >> (Yes = 1, No = >> >>> >>> >> Don't know HP model numbers, but it this is a PA-RISC machine, you >> almost have to set RESIDENT to -1 to prevent poor performance >> due to the >> architectures restrictions of only four active shared memory segments >> per process. On HP PA-RISC platforms, besides marking all >> shared memory >> lockable, it combines the 'resident' segment with the initial >> 'virtual' >> segment to reduce the count. VERY important on PA-RISC if >> you are using >> shared memory connections. On Itanium machines, no problem, >> though I'd >> still recommend using RESIDENT 1 or -1 to prevent the shared segments >> from swapping. >> >> >>> 0) >>> NETTYPE soctcp,4,150,NET>>> >>> >> The above line is no-op with no TCP connection names in >> DBSERVERNAME or>> DBSERVERALIASES. >> >> >>> NETTYPE ipcshm,1,25,NET>>> >>> >> It's very bad for performance and responsiveness to have >> shared memory >> poll threads in NET VPs. It wastes CPU cycles for no reason. >> Configure >> this in CPU VPs and as many as there are NUMCPUVPs (see below >> on that). >> > > For HPUX, I'll have to disagree with you on this one, Art. When you > configure multiple shared memory poll threads on HPUX, you will get that > many separate Message-type memory segments, very quickly eating into / > exceeding that optimal maximum of 4 segments. I do wholeheartedly agree > on assigning ipcshm connections to CPU, though. > Hey Paul, You're the platform expert! Though I had thought that the message segments were less of a problem than the virtual segments since each listener only attaches to one of those segments. Good to know. Art S. Kagel Oninit > HTH, > Paul M. > =========================================================================================== Please access the attached hyperlink for an important electronic communications disclaimer: http://www.oninit.com/home/disclaimer.php ===========================================================================================