Re: NUMAIOVPS setting

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. > > Experts ??? > > Thanks, > -Lin > ------------------ > Hi Lin, > > The setting that I heard was 1 per disks that have database tables. Hope that > helps. > > Dave > > ==========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. > > Experts ??? > > Thanks, > -Lin 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.