Hi,
It used to be calculated like (Total - Free - Inactive - Cached)/Total, but
changed somewhere in 7.x.
>From the book: "Dirty pages need to be paged out, but flushing a page is
extremely expensive compared to freeing a clean page. Thus, dirty pages are
given extra time on the inactive queue by
Hi,
according to "The Design and Implementation of the FreeBSD Operating
System"(https://books.google.ee/books?id=KfCuBAAAQBAJ&pg=PA290&lpg=PA290)
kernel divides used memory into five lists: Active, Inactive, Wired,
Cache and Free. In addition, some memory is used for disk caching.
Utilization of
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