From owner-freebsd-fs@FreeBSD.ORG  Sat Aug 23 14:16:39 2014
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id BD9BECA8
 for <freebsd-fs@FreeBSD.org>; Sat, 23 Aug 2014 14:16:39 +0000 (UTC)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
 [IPv6:2001:1900:2254:206a::16:76])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id A54683845
 for <freebsd-fs@FreeBSD.org>; Sat, 23 Aug 2014 14:16:39 +0000 (UTC)
Received: from bugs.freebsd.org ([127.0.1.118])
 by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id s7NEGdxW049292
 for <freebsd-fs@FreeBSD.org>; Sat, 23 Aug 2014 14:16:39 GMT
 (envelope-from bugzilla-noreply@freebsd.org)
From: bugzilla-noreply@freebsd.org
To: freebsd-fs@FreeBSD.org
Subject: [Bug 187594] [zfs] [patch] ZFS ARC behavior problem and fix
Date: Sat, 23 Aug 2014 14:16:38 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.0-STABLE
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: smh@FreeBSD.org
X-Bugzilla-Status: In Discussion
X-Bugzilla-Priority: Normal
X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cc
Message-ID: <bug-187594-3630-qQnjRUpfsK@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-187594-3630@https.bugs.freebsd.org/bugzilla/>
References: <bug-187594-3630@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs/>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 23 Aug 2014 14:16:39 -0000

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187594

Steven Hartland <smh@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |smh@FreeBSD.org

--- Comment #26 from Steven Hartland <smh@FreeBSD.org> ---
I've actually been looking at this patch today in relation to my investigation
of:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191510

I would appreciate it if people could test the attached patch, which was
created against stable/10

It should achieve the same as Karl's patch as well as:
* More closely matching original Solaris logic
* Provide better control of the reclaim trigger (absolute not percentage based,
which becomes a problem in larger memory machines)
* Uses direct kernel values instead of interfacing via sysctl's.
* Should fix the issue identified in #191510 as well.

Basic design is it will trigger ARC reclaim when free pages drops below
vfs.zfs.arc_free_target, which by default is 3 x that of the VM's target free
pages as exposed by vm.v_free_target (matching Solaris).

-- 
You are receiving this mail because:
You are the assignee for the bug.