I have read that page-out will also display disk I/O that has nothing to do with paging and swapping. This becuase the kernel disk buffer is tied into the paging buffer within the kernel. That is why Sun released priority paging in 2.6 or 2.7, to increase disk I/O performance and reduce its affect on paging. In Solaris 8 you do not see disk I/O in vmstat, becuase of the new memory management. This is based on what I have been told and read.

Here is a link a friend gave me:
http://sgi-sw.rz.ruhr-uni-bochum.de/...iles/c0104.htm

[Edited by Zaggy on 07-25-2001 at 03:34 PM]