From owner-freebsd-current@freebsd.org Sat Jan 2 16:12:04 2021 Return-Path: Delivered-To: freebsd-current@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 74A354D5817 for ; Sat, 2 Jan 2021 16:12:04 +0000 (UTC) (envelope-from guru@unixarea.de) Received: from ms-10.1blu.de (ms-10.1blu.de [178.254.4.101]) (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 4D7Rjc2swMz4ZZ7; Sat, 2 Jan 2021 16:12:04 +0000 (UTC) (envelope-from guru@unixarea.de) Received: from [188.174.60.30] (helo=c720-r368166.unixarea.de) by ms-10.1blu.de with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kvjVa-0004UJ-Uv; Sat, 02 Jan 2021 17:12:03 +0100 Received: from c720-r368166.fritz.box (localhost [127.0.0.1]) by c720-r368166.unixarea.de (8.16.1/8.14.9) with ESMTPS id 102GC2Dd045508 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 2 Jan 2021 17:12:02 +0100 (CET) (envelope-from guru@unixarea.de) Received: (from guru@localhost) by c720-r368166.fritz.box (8.16.1/8.14.9/Submit) id 102GC23L045507; Sat, 2 Jan 2021 17:12:02 +0100 (CET) (envelope-from guru@unixarea.de) X-Authentication-Warning: c720-r368166.fritz.box: guru set sender to guru@unixarea.de using -f Date: Sat, 2 Jan 2021 17:12:02 +0100 From: Matthias Apitz To: Alan Somers Cc: FreeBSD CURRENT Subject: Re: cp(1) of large files is causing 100% CPU utilization and poor transfer Message-ID: Reply-To: Matthias Apitz Mail-Followup-To: Alan Somers , FreeBSD CURRENT References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Operating-System: FreeBSD 13.0-CURRENT r368166 (amd64) X-message-flag: Mails containing HTML will not be read! Please send only plain text. X-Con-Id: 51246 X-Con-U: 0-guru X-Originating-IP: 188.174.60.30 X-Rspamd-Queue-Id: 4D7Rjc2swMz4ZZ7 X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Jan 2021 16:12:04 -0000 El día sábado, enero 02, 2021 a las 09:06:24a. m. -0700, Alan Somers escribió: > > As I said, it can be reproduced using only the local file system. This > > was setup recently on a SSD: > > > > # dmesg | grep ada0 > > ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 > > ada0: ACS-2 ATA SATA 3.x device > > ada0: Serial Number F995890846 > > ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 1024bytes) > > ada0: Command Queueing enabled > > ada0: 488386MB (1000215216 512 byte sectors) > > > > and by this procedure: > > > > # gpart create -s gpt ada0 > > # gpart add -t freebsd-boot -s 512k -a4k -l ssdboot ada0 > > # gpart bootcode -b /boot/pmbr -p /boot/gptboot -i1 ada0 > > # gpart add -t freebsd-ufs -l ssdrootfs -b 1m -s 2g ada0 > > # gpart add -t freebsd-ufs -l ssdvarfs -a 1m -s 2g ada0 > > # gpart add -t freebsd-ufs -l ssdusrfs -a 1m ada0 > > # newfs -U -t /dev/gpt/ssdrootfs > > # newfs -U -t /dev/gpt/ssdvarfs > > # newfs -U -t /dev/gpt/ssdusrfs > > > > # gpart show -l ada0 > > => 40 1000215136 ada0 GPT (477G) > > 40 1024 1 ssdboot (512K) > > 1064 984 - free - (492K) > > 2048 4194304 2 ssdrootfs (2.0G) > > 4196352 4194304 3 ssdvarfs (2.0G) > > 8390656 16777216 4 ssdswap (8.0G) > > 25167872 975046656 5 ssdusrfs (465G) > > 1000214528 648 - free - (324K) > > > > # mount -t ufs > > /dev/gpt/ssdrootfs on / (ufs, local, soft-updates) > > /dev/gpt/ssdvarfs on /var (ufs, local, soft-updates) > > /dev/gpt/ssdusrfs on /usr (ufs, local, soft-updates) > > > > When I run in the /usr fs the command > > > > # cp -p guru-20210102.tar.gz xxx > > > > it copies around 168M per minute. > > > Is that copying from /usr to /usr, or from /usr to /var or /? # cd /home/backups # cp -p guru-20210102.tar.gz xxx i.e. from /usr to /usr. matthias -- Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045 Public GnuPG key: http://www.unixarea.de/key.pub ¡Con Cuba no te metas! «» Don't mess with Cuba! «» Leg Dich nicht mit Kuba an! http://www.cubadebate.cu/noticias/2020/12/25/en-video-con-cuba-no-te-metas/