From owner-freebsd-questions@freebsd.org Tue Feb 11 15:50:41 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id BE86E2399A1 for ; Tue, 11 Feb 2020 15:50:41 +0000 (UTC) (envelope-from tech-lists@zyxst.net) Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) (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 48H6gN2BH6z4BQd for ; Tue, 11 Feb 2020 15:50:40 +0000 (UTC) (envelope-from tech-lists@zyxst.net) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 490EE21F32 for ; Tue, 11 Feb 2020 10:50:39 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Tue, 11 Feb 2020 10:50:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zyxst.net; h= date:from:to:subject:message-id:mime-version:content-type; s= fm1; bh=MtNsI1D1/L1UEH1EaMnZl+jD8+J9H9WuqPuofH/tufg=; b=QggS5pR1 Jd/e+46EpEuZn4jeeSitZyVrwpbcBDIUVaPGXmMh4DwdlCoz9sXEc4rP5cPnf3p0 Ze9/TKmPLEQclq3Tcq8WQN196YfDlXivMm6mZkOovFZVzKz+dtfcuUp7SAoyVrkV 1EZIa3WN5o/jnCEnxEQeLBTcs9pM8b1IJTdx6h9U+7yBKj02e9MGK8e1JFS/8FyF ByKD1AivC46hlIDSr+7G4hYOmHGblhHG4E9u4T/TsC9yFU915fnNfi4vyzXF02VV jFdiBMR8e8noz3A2S+5IOvDCwcIe9d9DObT+ZRqEZeRgCOI4w3bE0HH4c3qjt+wb uKRWrQGbLpurtA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:message-id :mime-version:subject:to:x-me-proxy:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm2; bh=MtNsI1D1/L1UEH1EaMnZl+jD8+J9H 9WuqPuofH/tufg=; b=ZPnfbZU3DNs7qB3xQpLXtlx4IvJl2F+mrJ6vBZSHSBRCw /asZC4mWVTYukddH7EI5uk46uMd2Ftet2UNi6bYhtLVjz02AAwUG9y7bYE1IaRZ1 EoOKQtDz35xQKOhE1MJ9iHZVGqA3kjMwvz9tA3+0DKF15H13yhV90ux6LpQQiQHX mSBYKBswZFAk9RiAzdqRiL9Oy2OrFXxYj2krCkLC9UAiyca/ozWG22kRKsD2rcdV 6968xWA60ivFdlrv2FjXbfp1ovu/fEAJ38leyBr84JXcvWHWAt8NkVR6xSwocdhC lHDgwUoHzv5+OoX4QyWCWlpGRsyBU1mr59kfgBnxg== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedugedrieefgdejkecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepfffhvffukfggtggusehgtderredttd dvnecuhfhrohhmpehtvggthhdqlhhishhtshcuoehtvggthhdqlhhishhtshesiiihgihs thdrnhgvtheqnecukfhppeekvddrjedtrdeluddrleelnecuvehluhhsthgvrhfuihiivg eptdenucfrrghrrghmpehmrghilhhfrhhomhepthgvtghhqdhlihhsthhsseiihiigshht rdhnvght X-ME-Proxy: Received: from bastion.zyxst.net (bastion.zyxst.net [82.70.91.99]) by mail.messagingengine.com (Postfix) with ESMTPA id AA3303060B21 for ; Tue, 11 Feb 2020 10:50:38 -0500 (EST) Date: Tue, 11 Feb 2020 15:50:09 +0000 From: tech-lists To: freebsd-questions@freebsd.org Subject: questions about swap (partition and file) Message-ID: <20200211155009.GA9715@bastion.zyxst.net> Mail-Followup-To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="YiEDa0DAkWCtVeE4" Content-Disposition: inline X-Rspamd-Queue-Id: 48H6gN2BH6z4BQd X-Spamd-Bar: -------- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=zyxst.net header.s=fm1 header.b=QggS5pR1; dkim=pass header.d=messagingengine.com header.s=fm2 header.b=ZPnfbZU3; dmarc=none; spf=pass (mx1.freebsd.org: domain of tech-lists@zyxst.net designates 66.111.4.25 as permitted sender) smtp.mailfrom=tech-lists@zyxst.net X-Spamd-Result: default: False [-8.19 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[zyxst.net:s=fm1,messagingengine.com:s=fm2]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; RWL_MAILSPIKE_GOOD(0.00)[25.4.111.66.rep.mailspike.net : 127.0.0.18]; R_SPF_ALLOW(-0.20)[+ip4:66.111.4.25]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; RCVD_COUNT_THREE(0.00)[4]; DMARC_NA(0.00)[zyxst.net]; DKIM_TRACE(0.00)[zyxst.net:+,messagingengine.com:+]; SIGNED_PGP(-2.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[25.4.111.66.list.dnswl.org : 127.0.5.1]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; ASN(0.00)[asn:11403, ipnet:66.111.4.0/24, country:US]; RCVD_TLS_LAST(0.00)[]; IP_SCORE(-3.49)[ip: (-9.81), ipnet: 66.111.4.0/24(-4.89), asn: 11403(-2.68), country: US(-0.05)] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Feb 2020 15:50:41 -0000 --YiEDa0DAkWCtVeE4 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Which is it better to have - swapfile partition or swapfile? I have both, on a SSD. Thing is, I can write 10x faster to the file than I = can to the partition. With a 512b block size, it can write at 17MB/s to the partition, and about 120-130MB/s to the swapfile, as reported by dd. Historically, ISTR that it was recommended to have several swap partitions = on the fastest disks available, and that swapfile was slower than a partition because of something like fat translation. Is this still the case nowadays? Is there a better way of measuring swap speed than dd? thanks, --=20 J. --YiEDa0DAkWCtVeE4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE8n3tWhxW11Ccvv9/s8o7QhFzNAUFAl5CzUAACgkQs8o7QhFz NAXMJQ//d6+Q/NvgIBv8auQXNGMO0z3RP7eJAY3uLCPFKA7uU+NYM3bT3JgxEt/j MnDCpgK60zRG/BIqsyEVwmJUkfDK+wPmlT/rVfsteuP3cydl65re+nioL/QRAxtB rhIY560j3oRoczJH6y4+skcMkUImcJPvfBfCalhUscqZS3xAnNfL6q4E06Gox0It 4mF0EI9R2MT8E1nCtoHVLvC0OVc2KjJqOygqHSpuiU1skHXf0P4veQZKfbHoNbJC iALk/8f45VDZEhYNYWdutbdAi+dKq8JQ3lDvV2tNAQHRkEk9ariHqM3uiJ46qph7 xjgCoetVQvvGN/qi2Upx0qnB1QUASwNc1IP5SYSlj1Kq3y+BHU0myvdxn0LBD509 ECx7siSTmsvC6QuK3Hv+mLlDhf5YfFuMwapCi3jW/sBm+DWAWZeUxFxG+0MPitqA a7yCmcF7ub98Gl+DXfd68QnwsHeBui8pUZUA8IxfgBfBF4JeNUMQOQIWoyvHZQOR 2kHNkdFE0Xt0MWcLrbq2QZMuxpLca26SiJbP0LSav/4JINKM2kPFqHv+HYFw+TUg L/OAIZ2TpXsUoOaxRyDZT7dry1Ep22cUfDrehTFXv0h211KmHZ0om9vLIVRX1SeJ W/v92LOEP1qgMKzI0ShvtRGwYJik2IZrL6tBRe5VBH/mvuIEYTQ= =wv6n -----END PGP SIGNATURE----- --YiEDa0DAkWCtVeE4--