From owner-freebsd-performance@freebsd.org Mon Feb 8 10:21:51 2021 Return-Path: Delivered-To: freebsd-performance@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 6166C52CAEF for ; Mon, 8 Feb 2021 10:21:51 +0000 (UTC) (envelope-from vladilen.kozin@gmail.com) Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DZ2BQ31Dkz3FyW for ; Mon, 8 Feb 2021 10:21:50 +0000 (UTC) (envelope-from vladilen.kozin@gmail.com) Received: by mail-io1-xd29.google.com with SMTP id n14so14400486iog.3 for ; Mon, 08 Feb 2021 02:21:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=a8Y2w0e0BcoYkmUY7dQhA+NpN8gI86NBBIrJ0mX9Phc=; b=LD22ZO1XhRpy65JHevx68izhdO6g1pm2eBZWDPArn96GJ7OfegA7xfMOKCt4sB0ywP tY856NbXcq8PnWchv/HKs2sABX0AofyUlW/BL7BUnOSR9S92oerKC+XB5MRWXIXTPYLd qaM7NOBbSex3JWhUwDPbuc7Ki9v8afMIWBvXZRtHta48Z4ToPLbX6PKEKrMVl7NFyH3a B9rxRLP/fbdm+l3tcHnApVXUcG7wpUCM/5/xOjvQW60Nr4hvFmAOgLU3NyvUi9md4QcY DfzCEQAXM9fuDuXNNbMmCZQkllZIuc7qQur3zLz9KzQoRSoL70ZD30x6Vctq7nyBrmot raFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=a8Y2w0e0BcoYkmUY7dQhA+NpN8gI86NBBIrJ0mX9Phc=; b=VIRjFI2b+EA+nyHjQfkBx19dJaDrSCJBMGV4N2s5zs6Tm3dEZKE6BzlJFu/eeGehEa oe890ZMvb7BGf+YWWweILpMvXqdg2IGxnA4kMrqZeEuf+MSV6ClZ3UxVgDIL0ZvcNFw2 CtXN/WMjQcMJ4yBWLp2aecgXZxpTvSojXgM49GpU1+IOJaiRwmKAlkc1M9c5yklCRkeo 4MIoAip3yJv6VeZFRZpkDS2qb9z3EDZnoWRGMtolyJk4RY8Lfk48MO9QXPRMzg6pZ7IZ A4PtIyNSGvMHEXS6ghQMxABnVaCiaWTIsCQTkDj0DTJhMKyVRIO9XyzjpQwMh/Yf2ccv KwLw== X-Gm-Message-State: AOAM533ZgXqsQe5CCK0SvkzXMcCaPgl6YlMtdRyAcg/oGWT0qfsaM7IJ j8ndIgOgUelfvVjotR6TB+FPZ6VeQ1iYL5giD70= X-Google-Smtp-Source: ABdhPJwWlr1Ie8BbFJdpN7rDO89roXrK1Z9tma2Iad+aOg4peRDMQm2nZObU/7hn9OFA2dPX4dJR7Wy2yyOIQRdtj7g= X-Received: by 2002:a02:856d:: with SMTP id g100mr17080535jai.10.1612779709515; Mon, 08 Feb 2021 02:21:49 -0800 (PST) MIME-Version: 1.0 References: <2002412.uJW0cDvVUg@t450s.local.lan> In-Reply-To: <2002412.uJW0cDvVUg@t450s.local.lan> From: Vladilen Kozin Date: Mon, 8 Feb 2021 10:21:38 +0000 Message-ID: Subject: Re: Tuning and monitoring write intensive server To: Walter von Entferndt Cc: freebsd-performance@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4DZ2BQ31Dkz3FyW X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=LD22ZO1X; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of vladilenkozin@gmail.com designates 2607:f8b0:4864:20::d29 as permitted sender) smtp.mailfrom=vladilenkozin@gmail.com X-Spamd-Result: default: False [-3.98 / 15.00]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-0.98)[-0.979]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RBL_DBL_DONT_QUERY_IPS(0.00)[2607:f8b0:4864:20::d29:from]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-performance@freebsd.org]; SPAMHAUS_ZRD(0.00)[2607:f8b0:4864:20::d29:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::d29:from]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-performance] X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Feb 2021 10:21:51 -0000 These are excellent pointers and get me on my way! Thank you very much Walter. Invaluable. On Sun, 7 Feb 2021 at 15:55, Walter von Entferndt wrote: > > At Sonntag, 7. Februar 2021, 13:00:04 CET Vladilen Kozin > wrote: > > [1 dedicated disk/ufs per thread, no redundency,...] > > RTFM tuning(7), zpool(8), zfs(8), gjournal(8), gstripe(8), gsched(8). > > - Obviously striping the disks will be beneficial, but it seems you > don't want that (not enough disks?) & know what you're doing. I suppose > your special task can tolerate data loss intentionally (no redundency). > > - Having the intent log on a dedicated, fast medium (SSD or NVD) would > gain performance. Either ZFS can do that, or you can use gjournal(8). > > - Inserting an I/O scheduler might improve performance, too (gsched(8)). > Yes, UFS is likely faster than ZFS on such a setup, but ZFS offers many > advantages in terms of administration, fault tolerance & reliability. > > You can fetch my scripts to insert the scheduler (rc(8) script) & > fs_summarize.awk to estimate the parameters for newfs(8) from the forums > in the thread "Useful scripts". I.e. run the AWK script on some samples > of your working data, then adjust the appropiate knobs to newfs(8). > Note that ZFS automagically adjusts to the I/O chunk size. > > To monitor the I/O, use systat(1). Additionally, you can find a > plethora of ports(7) for this, use psearch(1) or portfind(1) (install > 1st). > -- > =|o) "Stell' Dir vor es geht und keiner kriegt's hin." (Wolfgang Neuss) > > -- Best regards Vlad Kozin