From owner-freebsd-questions@freebsd.org Mon Feb 5 18:53:15 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1776FEE68F5 for ; Mon, 5 Feb 2018 18:53:15 +0000 (UTC) (envelope-from roberthuff@rcn.com) Received: from smtp.rcn.com (smtp.rcn.com [69.168.97.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id B4C63836BC for ; Mon, 5 Feb 2018 18:53:14 +0000 (UTC) (envelope-from roberthuff@rcn.com) X_CMAE_Category: , , X-CNFS-Analysis: v=2.2 cv=YuZNfMQX c=1 sm=1 tr=0 a=9TgA2UwI6Wy+6BV4wQM/cQ==:117 a=9TgA2UwI6Wy+6BV4wQM/cQ==:17 a=KGjhK52YXX0A:10 a=kj9zAlcOel0A:10 a=XRQyMpdBKAEA:10 a=Op4juWPpsa0A:10 a=48faUk6PgeAA:10 a=ti1vpir2ktW9QkatfwQA:9 a=CjuIK1q_8ugA:10 X-CM-Score: 0 X-Scanned-by: Cloudmark Authority Engine X-Authed-Username: cm9iZXJ0aHVmZkByY24uY29t Authentication-Results: smtp03.rcn.cmh.synacor.com header.from=roberthuff@rcn.com; sender-id=softfail Authentication-Results: smtp03.rcn.cmh.synacor.com smtp.mail=roberthuff@rcn.com; spf=softfail; sender-id=softfail Authentication-Results: smtp03.rcn.cmh.synacor.com smtp.user=roberthuff; auth=pass (PLAIN) Received-SPF: softfail (smtp03.rcn.cmh.synacor.com: transitional domain rcn.com does not designate 209.6.230.48 as permitted sender) Received: from [209.6.230.48] ([209.6.230.48:16259] helo=jerusalem.litteratus.org.litteratus.org) by smtp.rcn.com (envelope-from ) (ecelerity 3.6.25.56547 r(Core:3.6.25.0)) with ESMTPSA (cipher=AES256-GCM-SHA384) id A5/68-00908-418A87A5; Mon, 05 Feb 2018 13:53:08 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <23160.43027.295357.808217@jerusalem.litteratus.org> Date: Mon, 5 Feb 2018 13:53:07 -0500 From: Robert Huff To: Frank Leonhardt Cc: freebsd-questions@freebsd.org Subject: Re: Swap on SSD In-Reply-To: References: <26877DEB-034F-422B-918F-2A0D1C381537@kreme.com> X-Mailer: VM 8.2.0b under 25.3.1 (amd64-portbld-freebsd12.0) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Feb 2018 18:53:15 -0000 Frank Leonhardt writes: > FreeBSD doesn't actually swap these days; uses demand paging. Possible evidence to the contrary: On a system running: FreeBSD 12.0-CURRENT #0 r326723: Sat Dec 9 12:30:04 EST 2017 amd64 top shows: last pid: 57956; load averages: 2.02, 2.01, 1.95 up 57+19:09:04 13:49:29 132 processes: 3 running, 129 sleeping CPU: 38.7% user, 0.4% nice, 7.9% system, 0.0% interrupt, 53.0% idle Mem: 2264M Active, 2303M Inact, 1478M Laundry, 1525M Wired, 761M Buf, 115M Free Swap: 17G Total, 996M Used, 16G Free, 5% Inuse So ... is "Swap" an incorrect label, or is actual swapping going on? (And is there a utility which will list the swap area by owning process?) Respectfully, Robert Huff