Memory leak in ZFS?

[Bartosz Stec]

W dniu 2011-02-08 13:36, Martin Matuska pisze:
> I am using ZFS and sendfile(2) with apache, lighttpd, nginx and on
> FreeBSD 8.2-RC (v15 or with ZFS v28 patch). The systems concerned are
> quite busy.
> E.g. lighttpd servers delivering 30-50 Megabytes per second (half a
> gigabit) or samba servers delivering to hundreds of users.
>
> Since FreeBSD 8.1, really a lot of bugfixes have been ported to ZFS
> including very important sendfile(2) fixes and I highly recommend
> upgrading to 8.2 or 8-STABLE.
> As of v28, I am using the patch for 8-STABLE on several production servers.
>
> When 8.2-RELEASE is out, I plan to put a v28 patch + v28 binary upgrade
> kit on my webpage.
>
> As of the memory usage shown by top(1), I have noticed that memory used
> by some programs using IPC shared memory (e.g. postgresql) do not show
> up in the counts.
> After stopping the program the count is "fixed" again.
>
This machine was rebuilded from fresh sources two days ago, so whatever 
this bug is, it must be quite new (probably appeared in january 2011).
By the way,  I wrote (very) simple script for myself, quite helpful with 
leakage monitoring. Maybe you'll find it useful too if you're 
experiencing same issue:
http://pastebin.com/sQUyQbmm

-- 
Bartosz Stec