From owner-freebsd-arch@freebsd.org  Wed Mar  8 15:57:48 2017
Return-Path: <owner-freebsd-arch@freebsd.org>
Delivered-To: freebsd-arch@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 19BD8D03BB3
 for <freebsd-arch@mailman.ysv.freebsd.org>;
 Wed,  8 Mar 2017 15:57:48 +0000 (UTC) (envelope-from avg@FreeBSD.org)
Received: from citapm.icyb.net.ua (citapm.icyb.net.ua [212.40.38.140])
 by mx1.freebsd.org (Postfix) with ESMTP id 22C7E32E;
 Wed,  8 Mar 2017 15:57:43 +0000 (UTC) (envelope-from avg@FreeBSD.org)
Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua
 [212.40.38.100])
 by citapm.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id RAA13997;
 Wed, 08 Mar 2017 17:57:41 +0200 (EET) (envelope-from avg@FreeBSD.org)
Received: from localhost ([127.0.0.1])
 by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD))
 id 1cldy9-000H4G-Jj; Wed, 08 Mar 2017 17:57:41 +0200
From: Andriy Gapon <avg@FreeBSD.org>
Subject: UMA_ZONE_CACHESPREAD and uma_zsecond_add
To: freebsd-arch@FreeBSD.org, Jeff Roberson <jroberson@jroberson.net>
Message-ID: <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org>
Date: Wed, 8 Mar 2017 17:56:44 +0200
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101
 Thunderbird/45.7.1
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-arch>,
 <mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch/>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
 <mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 08 Mar 2017 15:57:48 -0000


First, the history of UMA_ZONE_CACHESPREAD and uma_zsecond_add():
https://lists.freebsd.org/pipermail/freebsd-arch/2008-December/008800.html

Now, more than 8 years after those features were introduced, we still don't have
a single in-tree consumer for them.
Does anyone use those features out of tree?
Does anyone still have plans to make use of them?
Will anyone get sad if those features get garbage collected?

Thank you.

-- 
Andriy Gapon