From owner-freebsd-fs@freebsd.org Sat May 23 19:44:17 2020 Return-Path: Delivered-To: freebsd-fs@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 15B302DC40C for ; Sat, 23 May 2020 19:44:17 +0000 (UTC) (envelope-from SRS0=4R+8=7F=quip.cz=000.fbsd@elsa.codelab.cz) Received: from elsa.codelab.cz (elsa.codelab.cz [94.124.105.4]) (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 49Tv1q3xzhz4Y5d for ; Sat, 23 May 2020 19:44:15 +0000 (UTC) (envelope-from SRS0=4R+8=7F=quip.cz=000.fbsd@elsa.codelab.cz) Received: from elsa.codelab.cz (localhost [127.0.0.1]) by elsa.codelab.cz (Postfix) with ESMTP id EADC62842E for ; Sat, 23 May 2020 21:44:06 +0200 (CEST) Received: from illbsd.quip.test (ip-62-24-92-232.net.upcbroadband.cz [62.24.92.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by elsa.codelab.cz (Postfix) with ESMTPSA id 8751128428 for ; Sat, 23 May 2020 21:44:05 +0200 (CEST) To: "freebsd-fs@freebsd.org" From: Miroslav Lachman <000.fbsd@quip.cz> Subject: ZFS on FreeBSD 11.3 slower than 10.4 Message-ID: <1ff455a5-d111-86fa-ceb1-1021b6d9a5b6@quip.cz> Date: Sat, 23 May 2020 21:44:03 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 49Tv1q3xzhz4Y5d X-Spamd-Bar: ++ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of SRS0=4R@elsa.codelab.cz has no SPF policy when checking 94.124.105.4) smtp.mailfrom=SRS0=4R@elsa.codelab.cz X-Spamd-Result: default: False [2.48 / 15.00]; RCVD_TLS_LAST(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.11)[0.106]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; ARC_NA(0.00)[]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; RCVD_COUNT_THREE(0.00)[3]; DMARC_NA(0.00)[quip.cz]; NEURAL_SPAM_MEDIUM(0.29)[0.294]; NEURAL_SPAM_LONG(0.88)[0.876]; TO_DN_EQ_ADDR_ALL(0.00)[]; R_SPF_NA(0.00)[no SPF record]; FORGED_SENDER(0.30)[000.fbsd@quip.cz,SRS0=4R@elsa.codelab.cz]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:42000, ipnet:94.124.104.0/21, country:CZ]; TAGGED_FROM(0.00)[8=7F=quip.cz=000.fbsd]; FROM_NEQ_ENVFROM(0.00)[000.fbsd@quip.cz,SRS0=4R@elsa.codelab.cz] X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 May 2020 19:44:17 -0000 I upgraded my old desktop computer few month ago from old 10.4 based PC-BSD to stock FreeBSD 11.3. It uses single 2TB HDD 7200rpm. My problem is that upgraded version is really slow and some desktop applications are very lagging (playing multimedia is interrupted for a fraction of seconds) when there is heavy filesystem activity. I am using zfsnap2 for taking snapshots periodically and when there is enough snapshots zfs destroy is called. In this time the user experience is terrible. Starting new application like browser or even something much smaller takes minutes. The old version based on FreeBSD 10.4 behaves much better. I used the old version for years and never have problems with interrupted multimedia playback. Are there some sysctls to tune to get better desktop interactivity in heavy filesystem operations like zfs destroy, pkg check or other "find" periodic scripts? Kind regards Miroslav Lachman