From nobody Wed Apr 06 20:18:49 2022 X-Original-To: freebsd-fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 756761A8C823; Wed, 6 Apr 2022 20:19:04 +0000 (UTC) (envelope-from bfriesen@simple.dallas.tx.us) Received: from smtp.simplesystems.org (smtp.simplesystems.org [65.66.246.90]) (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 4KYbSh1LCwz4YgS; Wed, 6 Apr 2022 20:18:56 +0000 (UTC) (envelope-from bfriesen@simple.dallas.tx.us) Received: from scrappy.simplesystems.org (scrappy.simplesystems.org [65.66.246.73]) by smtp.simplesystems.org (8.14.4+Sun/8.14.4) with ESMTP id 236KIn7c011211; Wed, 6 Apr 2022 15:18:50 -0500 (CDT) Date: Wed, 6 Apr 2022 15:18:49 -0500 (CDT) From: Bob Friesenhahn X-X-Sender: bfriesen@scrappy.simplesystems.org To: egoitz@ramattack.net cc: freebsd-fs@FreeBSD.org, freebsd-hackers@FreeBSD.org, Freebsd performance Subject: Re: {* 05.00 *}Re: Desperate with 870 QVO and ZFS In-Reply-To: <7aa95cb4bf1fd38b3fce93bc26826042@ramattack.net> Message-ID: References: <4e98275152e23141eae40dbe7ba5571f@ramattack.net> <665236B1-8F61-4B0E-BD9B-7B501B8BD617@ultra-secure.de> <0ef282aee34b441f1991334e2edbcaec@ramattack.net> <28e11d7ec0ac5dbea45f9f271fc28f06@ramattack.net> <7aa95cb4bf1fd38b3fce93bc26826042@ramattack.net> User-Agent: Alpine 2.20 (GSO 67 2015-01-07) List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (smtp.simplesystems.org [65.66.246.90]); Wed, 06 Apr 2022 15:18:50 -0500 (CDT) X-Rspamd-Queue-Id: 4KYbSh1LCwz4YgS X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of bfriesen@simple.dallas.tx.us designates 65.66.246.90 as permitted sender) smtp.mailfrom=bfriesen@simple.dallas.tx.us X-Spamd-Result: default: False [-3.22 / 15.00]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.978]; RCPT_COUNT_THREE(0.00)[4]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; FROM_HAS_DN(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[dallas.tx.us]; NEURAL_HAM_LONG(-1.00)[-1.000]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.94)[-0.941]; MLMMJ_DEST(0.00)[freebsd-performance,freebsd-hackers,freebsd-fs]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:7018, ipnet:65.64.0.0/13, country:US]; RCVD_COUNT_TWO(0.00)[2] X-ThisMailContainsUnwantedMimeParts: N On Wed, 6 Apr 2022, egoitz@ramattack.net wrote: >> >> WE DON'T USE COMPRESSION AS IT'S NOT SET BY DEFAULT. SOME PEOPLE SAY YOU SHOULD HAVE IT ENABLED.... BUT.... JUST FOR AVOID HAVING SOME DATA COMPRESSED SOME OTHER NOT (IN CASE YOU ENABLE AND LATER DISABLE) AND FINALLY FOR AVOID ACCESSING TO INFORMATION WITH DIFFERENT CPU COSTS OF HANDLING... WE HAVE NOT TOUCHED COMPRESSION.... There seems to be a problem with your caps-lock key. Since it seems that you said that you are using maildir for your mail server, it is likely very useful if you do enable even rather mild compression (e.g. lz4) since this will reduce the write work-load and even short files will be stored more efficiently. Bob -- Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt