Re: MULTIPROCESSOR OPTION 7.13

Just my 2 cents worth: I have a HP T500, T520, and 2 K200's which all have two processors. I found that running with the MULTIPROCESSOR set to two was the way to go. My performance while running config'd as one cpu was good, but sometimes I'd see the one cpu at 100% while the other one was almost idle. During this time, no other processes could connect to the database. When I changed to config'd as two cpu's, this problem went away and I didn't notice any difference in performance. Good Luck, Tracy > > The Informix DSA Administrators Guide, version 7.1, page 10-18 says > > "On some two-processor computers, you should only run one CPU virtual > processor because the overhead of synchronizing the two virtual > processors offsets the benefit of distributing the processing" > > Of course, using one CPU virtual processor means that the > MULTIPROCESSOR option should be set to zero, which means that > I am telling Informix that I don't have more than one processor > and am basically crippling my server software for parallelism/PDQ. > > So far, my tests have been fairly close either way. Can anyone provide > any further insight into this? > > I am using an HP J200 with 2 100 MHZ PA-RISC processors and > Informix DSA 7.13.UC1 > > Any assistance appreciated > > Allen Jantzen > allenj@ndr.com > -- ========================================================================= = Tracy W. Nedd = = Banctec Inc. - DBA = = Silver Spring, Md = = tracyn@banctec.clark.net or tracyn@asd.banctec.com = ========================================================================= = ALL RIGHTS RESERVED. = = This posting is copyright and may be used only for the purposes = = of professional study, or the professional exchange of information. = = Use of this posting by any commercial organization for the purposes = = of vilifying another is explicitly prohibited. = =========================================================================