From owner-freebsd-questions@freebsd.org Mon Feb 5 11:49:02 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 9303CEE914E for ; Mon, 5 Feb 2018 11:49:02 +0000 (UTC) (envelope-from 4250.10.freebsd-questions=freebsd.org@email-od.com) Received: from bca5.email-od.com (bca5.email-od.com [207.246.239.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2280B6F9B2 for ; Mon, 5 Feb 2018 11:49:01 +0000 (UTC) (envelope-from 4250.10.freebsd-questions=freebsd.org@email-od.com) DKIM-Signature: v=1; a=rsa-sha256; d=email-od.com;i=@email-od.com;s=dkim; c=relaxed/relaxed; q=dns/txt; t=1517831347; x=1520423347; h=content-transfer-encoding:content-type:mime-version:references:in-reply-to:message-id:subject:to:from:date:x-thread-info; bh=+rxOlBtQwqnZfxZ2KX2vpZiRzpqjQZEkE75b6H/MK9U=; b=t/Z3ZVoFPRl4ODQTMbKncu7W0P6inudipXwZL/7wfnI17VXolSWTM7IIezscB9Q+9hAbQHHEc6IIos+L9rB1c6ovvl8iHq6v0mhKZUiiDv6R7vNN1vJqw5i9+k6qWxE13o43QPtuFrN3D3muSx8C66Fw8SUhQr5wWRG0tMEgoUY= X-Thread-Info: NDI1MC4xMi44YzAwMDAwMDIwMzFkNS5mcmVlYnNkLXF1ZXN0aW9ucz1mcmVlYnNkLm9yZw== Received: from r1.us-west-2a.aws.in.socketlabs.com (EMTPY [54.186.235.111]) by bca2.email-od.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Mon, 5 Feb 2018 05:48:56 -0500 Received: from smtp.lan.sohara.org (EMTPY [89.127.62.20]) by r1.us-west-2a.aws.in.socketlabs.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Mon, 5 Feb 2018 05:48:46 -0500 Received: from [192.168.63.1] (helo=steve.lan.sohara.org) by smtp.lan.sohara.org with smtp (Exim 4.90 (FreeBSD)) (envelope-from ) id 1eieKJ-000II5-70 for freebsd-questions@freebsd.org; Mon, 05 Feb 2018 10:48:43 +0000 Date: Mon, 5 Feb 2018 10:48:43 +0000 From: Steve O'Hara-Smith To: freebsd-questions@freebsd.org Subject: Re: Swap on SSD Message-Id: <20180205104843.0868711878b3ca277d9dce5f@sohara.org> In-Reply-To: <26877DEB-034F-422B-918F-2A0D1C381537@kreme.com> References: <26877DEB-034F-422B-918F-2A0D1C381537@kreme.com> X-Mailer: Sylpheed 3.6.0 (GTK+ 2.24.31; amd64-portbld-freebsd11.0) X-Clacks-Overhead: "GNU Terry Pratchett" Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 11:49:02 -0000 On Sun, 4 Feb 2018 04:19:25 -0700 "@lbutlr" wrote: > I have a machine that has dual SSDs in it and no spinning disks. FreeBSD > has a 4GB (or so) swap partition that it created on the installation of > FreeBSD 11.1. > > Isn't this going to cause problems for the SSD to have swap constantly > working the drive? If swap activity is constantly working the drive then you have a problem (add RAM or reduce workload) anyway. With an SSD the performance problem will be less painful than with a hard disc so for a system that is well sized to its load an SSD is a great solution for swap, rarely used but fast when needed. -- Steve O'Hara-Smith