11.2-STABLE kernel wired memory leak

Mike Tancsa mike at sentex.net
Tue Feb 12 19:41:16 UTC 2019

On 2/12/2019 2:38 PM, Eugene Grosbein wrote:
> mbuf* numbers represent memory being wasted IMHO.
> In contrast to ZFS memory that can contain useful cached data,
> contents of freed mbufs cannot be re-used, right?
> Some amount of "free" mbufs in the zone's just fine to serve bursts of traffic
> without need to grow the zone but your numbers are way too big IMHO.
> Do you have memory pressure here? Growth of swap usage?
I had to radically cut ARC down, otherwise the box would start swapping
all sorts of processes out

% sysctl -a vfs.zfs.arc_max
vfs.zfs.arc_max: 12307744768


Mike Tancsa, tel +1 519 651 3400 x203
Sentex Communications, mike at sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada   

More information about the freebsd-stable mailing list