On Tue, 2002-03-26 at 10:15, Andrew Shewmaker wrote: > Jeff Layton wrote: > > >Joe Landman wrote: > > > >> > >>First off, spread the swap to as many spindles as you can. Under Linux, > >>you can "stripe" swap across multiple partitions. If you have 4 disks, > >>then look at the possibility of using 4 equisized partitions (one per > >>disk) for swap. This needs to be done at system build time. Never ever > >>put all your swap on a single partition. This is "A Bad Thing(TM)" and > >>leads to swap-death. > >> > > > >Can you put swap on RAID-0? I've never tried that before. Not generally recommended. The swap daemon handles that if you set all the swap entries in /etc/fstab to pri=0. [...] > Set multiple swap partitions to the same priority > > | > /dev/sda2 none swap sw,pri=3 0 0 > /dev/sdb2 none swap sw,pri=3 0 0 > /dev/sdc2 none swap sw,pri=3 0 0 > /dev/sdd2 none swap sw,pri=1 0 0 Almost... Set all the pri=0. Otherwise swap is not parallelized. If one partition is set to pri=1, and the rest set to pri=3, swap will fill the pri=1 up before attempting to use the pri=3 resources. -- Joseph Landman, Ph.D. Senior Scientist, MSC Software High Performance Computing email : joe.landman@mscsoftware.com messaging : page_joe@mschpc.dtw.macsch.com Main office : +1 248 208 3312 Cell phone : +1 734 612 4615 Fax : +1 714 784 3774