Re: NUMAIOVPS setting for KAIO

Fred Krefting wrote: > > David Samuels wrote: > > > > ==========Lin-Chuan Lee, 7/29/96========== > > What is recommended setting in general ( assume on platform > > with no KAIO) ?? A Performnace tuning guide I got in class > > states 1x number of disks but I also remeber the instructor > > saying that sometimes it's better to go with 2x. > > > I just returned from a performance tuning class, 7.x, and my instructor > said 1 per physical disk with raw chunks and 2 per disk with cooked > chunks. But in reality you can probably get by with less. Check the > onstat -g ioq or glo to see how busy the aio v-cpu's are. What if KAIO is available? Should NUMAIOVPS be 1 if KAIO is available regardless the number of disks? Chao