11.2-STABLE kernel wired memory leak

Eugene Grosbein eugen at grosbein.net
Tue Feb 12 16:49:19 UTC 2019

12.02.2019 23:34, Mark Johnston wrote:

> I suspect that the "leaked" memory is simply being used to cache UMA
> items.  Note that the values in the FREE column of vmstat -z output are
> quite large.  The cached items are reclaimed only when the page daemon
> wakes up to reclaim memory; if there are no memory shortages, large
> amounts of memory may accumulate in UMA caches.  In this case, the sum
> of the product of columns 2 and 5 gives a total of roughly 4GB cached.

Forgot to note, that before I got system to single user mode, there was heavy swap usage (over 3.5GB)
and heavy page-in/page-out, 10-20 megabytes per second and system was crawling slow due to pageing.

More information about the freebsd-stable mailing list