Date: Thu, 18 Jun 2009 01:51:14 +0200 From: "Ronald Klop" <ronald-freebsd8@klop.yi.org> To: "Dan Naumov" <dan.naumov@gmail.com>, freebsd-fs@freebsd.org, "FreeBSD-STABLE Mailing List" <freebsd-stable@freebsd.org> Subject: Re: ZFS performance on 7.2-release/amd64 low compared to UFS2 + SoftUpdates Message-ID: <op.uvo0joki8527sy@82-170-177-25.ip.telfort.nl> In-Reply-To: <cf9b1ee00906170034q1cee4581hb518f53e9f368368@mail.gmail.com> References: <cf9b1ee00906170034q1cee4581hb518f53e9f368368@mail.gmail.com>
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On Wed, 17 Jun 2009 09:34:02 +0200, Dan Naumov <dan.naumov@gmail.com> wrote: > I am wondering if the numbers I am seeing is something expected or is > something broken somewhere. Output of bonnie -s 1024: > > on UFS2 + SoftUpdates: > > -------Sequential Output-------- ---Sequential Input-- > --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- > --Seeks--- > Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU > /sec %CPU > 1024 56431 94.5 88407 38.9 77357 53.3 64042 98.6 644511 98.6 > 23603.8 243.3 > > on ZFS: > > -------Sequential Output-------- ---Sequential Input-- > --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- > --Seeks--- > Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU > /sec %CPU > 1024 22591 53.7 45602 35.1 14770 13.2 45007 83.8 94595 28.0 > 102.2 1.2 > > > atom# cat /boot/loader.conf > vm.kmem_size="1024M" > vm.kmem_size_max="1024M" > vfs.zfs.arc_max="96M" Isn't 96M for ARC really small? Mine is 860M. vfs.zfs.arc_max: 860072960 kstat.zfs.misc.arcstats.size: 657383376 I think the UFS2 cache is much bigger which makes a difference in your test. Ronald.
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