From owner-freebsd-fs@freebsd.org Thu Sep 22 12:49:13 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 364ABBE5CC2 for ; Thu, 22 Sep 2016 12:49:13 +0000 (UTC) (envelope-from marck@rinet.ru) Received: from woozle.rinet.ru (woozle.rinet.ru [195.54.192.68]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 992B8395 for ; Thu, 22 Sep 2016 12:49:09 +0000 (UTC) (envelope-from marck@rinet.ru) Received: from localhost (localhost [127.0.0.1]) by woozle.rinet.ru (8.14.5/8.14.5) with ESMTP id u8MCfJVS073091 for ; Thu, 22 Sep 2016 15:41:20 +0300 (MSK) (envelope-from marck@rinet.ru) Date: Thu, 22 Sep 2016 15:41:19 +0300 (MSK) From: Dmitry Morozovsky To: freebsd-fs@FreeBSD.org Subject: ZFS: tuning for flash-only pool Message-ID: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) X-NCC-RegID: ru.rinet X-OpenPGP-Key-ID: 6B691B03 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (woozle.rinet.ru [0.0.0.0]); Thu, 22 Sep 2016 15:41:20 +0300 (MSK) X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Sep 2016 12:49:13 -0000 Dear colleagues, are there any special tunings that would be useful for pool of raidz2 of 6 SSDs? usage pattern is like rrd and/or database, so IOPS in mix read-write situation it the primary target (ashift is automatically set as 12). -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------