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Date: Thu, 21 Dec 2017 05:55:02 +1100
From: Peter Jeremy <peter@rulingia.com>
To: Andriy Gapon <avg@FreeBSD.org>
Cc: Baptiste Daroussin <bapt@freebsd.org>, src-committers@freebsd.org,
 svn-src-all@freebsd.org, svn-src-stable@freebsd.org,
 svn-src-stable-11@freebsd.org
Subject: Re: svn commit: r326619 -
 stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
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On 2017-Dec-19 14:50:57 +0200, Andriy Gapon <avg@FreeBSD.org> wrote:
>On 13/12/2017 20:52, Peter Jeremy wrote:
>> This change appears to break the backpressure mechanism that forces
>> ARC to release wired memory.  Running FreeBSD/amd64 r326743, I found
=2E..
>could you please try to monitor 'arc-needfree' DTrace probe during periods=
 when
>you are trying to put a pressure on the memory?
>The probe's argument (signed) tells the ARC's idea of the memory availabil=
ity /
>shortage.

I will see if I can reproduce the issue in a VBox to remove the need to
revert my reversion.  Give me a couple of days.

--=20
Peter Jeremy

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