From owner-freebsd-stable@FreeBSD.ORG Wed Aug 4 14:14:38 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3F9D61065670 for ; Wed, 4 Aug 2010 14:14:38 +0000 (UTC) (envelope-from alexvpetrov@gmail.com) Received: from mail-ey0-f182.google.com (mail-ey0-f182.google.com [209.85.215.182]) by mx1.freebsd.org (Postfix) with ESMTP id BF1308FC1E for ; Wed, 4 Aug 2010 14:14:37 +0000 (UTC) Received: by eyh6 with SMTP id 6so2279188eyh.13 for ; Wed, 04 Aug 2010 07:14:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:subject:date :user-agent:references:in-reply-to:mime-version:message-id:cc :content-type:content-transfer-encoding; bh=seK1noGjr14ygmFiAcLBxf7MlDbgZOwpTl8JPf94E9g=; b=VvwtofVFdHQVUdHoaMU0DsjV8LdgVtQkrFf5eD9BCoXh51oefDP8R4shygzuxKfSRu efTQS1g8Se7xvJMG2TiVXV1ukB86o7T9FY/hpXKEnzY51ZcGIetAeEJ4Ox3Z8jU65qRo u5JtUHCKmeMYMQ6kHJTeYVi3jbhBH/nv+5E5M= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:references:in-reply-to:mime-version :message-id:cc:content-type:content-transfer-encoding; b=VZRBpzK4xho63pLDWvMOXbGyc3BDLm867KeJWfeay+HOc1TIfR+v9Aodewm04jEUUF H9oU/3rRzJTjmtY+fxM+k7CFZSIHpYwmIR7A406zk272HQCjhpzpMGzDe0VtW5JCADCe 39oeamhYw6M6KkKQTBYC2RsluPJwqA1TJq5iQ= Received: by 10.213.77.75 with SMTP id f11mr2085154ebk.15.1280931276412; Wed, 04 Aug 2010 07:14:36 -0700 (PDT) Received: from alex.super ([91.195.101.86]) by mx.google.com with ESMTPS id u9sm6872155eeh.11.2010.08.04.07.14.29 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 04 Aug 2010 07:14:35 -0700 (PDT) From: "Alex V. Petrov" To: "Stefan Huerter" Date: Wed, 4 Aug 2010 22:14:24 +0800 User-Agent: KMail/1.13.5 (FreeBSD/8.1-STABLE; KDE/4.4.5; amd64; ; ) References: <201008042008.25679.alexvpetrov@gmail.com> <3511.195.185.213.162.1280927363.squirrel@artif-webmail.de> In-Reply-To: <3511.195.185.213.162.1280927363.squirrel@artif-webmail.de> MIME-Version: 1.0 Message-Id: <201008042214.25335.alexvpetrov@gmail.com> Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Cc: freebsd-stable@freebsd.org Subject: Re: zpool - low speed write X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Aug 2010 14:14:38 -0000 =D0=92 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D0=BE=D1=82 = 4 =D0=B0=D0=B2=D0=B3=D1=83=D1=81=D1=82=D0=B0 2010 21:09:23 =D0=B2=D1=8B =D0= =BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB=D0=B8: > Guckux Alex >=20 > The first output of zpool iostat shows you only a statistical output for a > specific time (unknown to me now). > Have you tried s.th. like: > zpool iostat -v 10 10 > shows you the first statistic summary, followed 9 output with 10sec delay > and a statistic average to the last output. >=20 Result for 1 proces copying (Krusader) single HDD to pool zpool iostat -v 10 10 capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,91T 826G 98 5 12,0M 206K ada4 599G 332G 30 1 3,69M 74,4K ada2 634G 294G 31 1 3,90M 72,5K ada3 728G 200G 36 1 4,44M 59,6K =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,91T 826G 0 172 0 7,96M ada4 599G 332G 0 58 0 2,88M ada2 634G 294G 0 58 0 2,70M ada3 728G 200G 0 55 0 2,38M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,91T 826G 0 166 0 8,06M ada4 599G 332G 0 56 0 2,99M ada2 634G 294G 0 56 0 2,81M ada3 728G 200G 0 53 0 2,26M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,91T 826G 0 162 0 7,61M ada4 599G 332G 0 54 0 2,64M ada2 634G 294G 0 56 0 2,80M ada3 728G 200G 0 52 0 2,18M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,91T 826G 0 145 0 6,27M ada4 599G 332G 0 47 0 2,14M ada2 634G 294G 0 51 0 2,29M ada3 728G 200G 0 46 0 1,84M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,91T 826G 0 130 0 6,37M ada4 599G 332G 0 45 0 2,52M ada2 634G 294G 0 44 0 2,09M ada3 728G 200G 0 40 0 1,77M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 826G 0 143 0 6,68M ada4 599G 332G 0 48 0 2,43M ada2 634G 294G 0 49 0 2,39M ada3 728G 200G 0 45 0 1,86M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 826G 0 147 0 7,03M ada4 599G 332G 0 49 0 2,63M ada2 634G 294G 0 49 0 2,39M ada3 728G 200G 0 48 0 2,02M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 826G 0 176 0 7,61M ada4 599G 332G 0 58 0 2,89M ada2 634G 294G 0 60 0 2,61M ada3 728G 200G 0 56 0 2,10M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 826G 0 142 0 7,27M ada4 599G 332G 0 47 0 2,54M ada2 634G 294G 0 50 0 2,67M ada3 728G 200G 0 45 0 2,06M =2D--------- ----- ----- ----- ----- ----- ----- In time=20 dd if=3D/dev/zero of=3D/tank/test.zero bs=3D3M count=3D1000 1000+0 records in 1000+0 records out 3145728000 bytes transferred in 91.863862 secs (34243368 bytes/sec) zpool iostat -v 10 10 capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 824G 98 5 12,0M 239K ada4 599G 332G 30 1 3,68M 86,4K ada2 635G 293G 31 1 3,89M 84,0K ada3 729G 199G 36 1 4,43M 69,0K =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 825G 4 220 320K 15,5M ada4 599G 332G 1 76 128K 5,56M ada2 635G 293G 1 74 115K 5,45M ada3 728G 200G 1 69 76,7K 4,44M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 824G 0 511 6,39K 34,0M ada4 599G 332G 0 173 6,39K 12,1M ada2 635G 293G 0 175 0 12,0M ada3 728G 200G 0 162 0 9,95M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 824G 0 491 0 30,1M ada4 599G 332G 0 169 0 11,1M ada2 635G 293G 0 165 0 10,2M ada3 728G 200G 0 156 0 8,67M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 824G 0 578 19,2K 38,6M ada4 600G 331G 0 194 0 13,5M ada2 635G 293G 0 200 6,39K 14,0M ada3 729G 199G 0 183 12,8K 11,1M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 823G 0 647 6,39K 42,6M ada4 600G 331G 0 223 0 15,6M ada2 635G 293G 0 219 6,39K 14,8M ada3 729G 199G 0 204 0 12,2M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 823G 0 513 6,39K 29,0M ada4 600G 331G 0 176 0 10,6M ada2 635G 293G 0 176 6,39K 10,4M ada3 729G 199G 0 161 0 8,02M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 823G 0 693 12,8K 38,7M ada4 600G 331G 0 239 6,39K 14,1M ada2 636G 292G 0 232 6,39K 13,7M ada3 729G 199G 0 221 0 11,0M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 822G 0 534 0 30,4M ada4 600G 331G 0 179 0 10,7M ada2 636G 292G 0 183 0 11,0M ada3 729G 199G 0 171 0 8,73M =2D--------- ----- ----- ----- ----- ----- ----- capacity operations bandwidth pool used avail read write read write =2D--------- ----- ----- ----- ----- ----- ----- tank 1,92T 822G 0 465 0 23,8M ada4 600G 331G 0 157 0 8,66M ada2 636G 292G 0 156 0 8,22M ada3 729G 199G 0 150 0 6,92M =2D--------- ----- ----- ----- ----- ----- ----- =2D---- Alex V. Petrov