SUMMARY: priority_paging=1

A: thank you for your answer.

With Solaris[tm] 8, priorty_paging has given way to
Virtual Memory Cyclic Caching. The principle is the
same as with priority_paging. However, now instead of
the previous single free list, there are now two
lists: a free list for pages with no identity; the
cache list for unmapped non-dirty pages. This means
that the seg_map can now page against itself. Pages
are released by the seg_map and are now unmapped.
These unmapped pages are placed into the cache list.
When needed, pages are then placed onto the free list
which makes it available for the kernel to use.
Theoretically, the kernel should now be able to
maintain free pages much more efficiently. 

Solaris 8 has also updated vmstat to show executable,
anonymous, and file system page usage so that users
can more accurately track page usage. This also means
that scripts based on the column format of previous
Solaris vmstat output will need to be modified to
reflect the new columns. 



--- pelicancomputers <rfransix@yahoo.com> wrote:
> should priority_paging=1 set in /etc/system cause
> the
> iowait in top to sit at 50%?
> 
> should i even be using priority_paging=1 on
> solaris8?
> 
> comments!
> 
> thank you.
> 
> rf
> 
> 
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