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Subject: [Bug 200628] Wired memory not released after deletion from ZFS,
 kernel kills processes
Date: Sat, 29 Aug 2015 10:39:42 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200628

Vladimir Laskov <samflanker@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |samflanker@gmail.com

--- Comment #1 from Vladimir Laskov <samflanker@gmail.com> ---
my test case on 10.2-RELEASE amd64

1. create 1G file 
# dd if=/dev/urandom bs=1024 count=1024 of=blockout.bin
2. while : ; do cat blockout.bin ; done | pv -brt | dd bs=1024k count=16000
of=blockout2.bin
3. see Wired and ARC counts on 'top' output
4. remove blockout2.bin
5. see Wired and ARC counts on 'top' output


my solution: disable UMA for ZFS
vfs.zfs.zio.use_uma="0"
vfs.zfs.arc_max="16G"

try it

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