Date: Thu, 21 Jan 2016 19:12:02 -0500 From: Mason Loring Bliss <mason@blisses.org> To: Jov <zhao6014@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: ZFS performance help sought Message-ID: <20160122001202.GM4538@blisses.org> In-Reply-To: <CADyrUxNEYh8bUSvQHKp%2B95yfh8NU2UWRYVU0xzdqWJyxV_vbNw@mail.gmail.com> References: <20160121205139.GG4538@blisses.org> <ea3f05f9a8c20bd62a1c391b432dafe2@dweimer.net> <20160121232810.GJ4538@blisses.org> <20160121235545.GK4538@blisses.org> <CADyrUxNEYh8bUSvQHKp%2B95yfh8NU2UWRYVU0xzdqWJyxV_vbNw@mail.gmail.com>
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On Fri, Jan 22, 2016 at 08:06:57AM +0800, Jov wrote:
> sys% 62.6 is wired，what ie your disk type？please post the output of iostat
> -x 1
This is with the current test transfer going, with the settings noted
previously:
extended device statistics
device r/s w/s kr/s kw/s qlen svc_t %b
ada0 182.6 0.0 23369.6 0.0 1 3.2 30
ada1 212.5 0.0 27200.6 0.0 0 3.1 33
ada2 0.0 486.9 0.0 61652.4 0 4.5 64
ada3 0.0 798.1 0.0 101236.2 1 4.7 75
ada4 0.0 0.0 0.0 0.0 0 0.0 0
da0 0.0 0.0 0.0 0.0 0 0.0 0
cd0 0.0 0.0 0.0 0.0 0 0.0 0
the sending pool is a mirror on ada0,1, and the receiving pool in this case
is a mirror on ada2,3.
The disks in question:
ada0: <ST500DM002-1BD142 KC43> ATA8-ACS SATA 3.x device
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: <WDC WD5000AAKX-22ERMA0 17.01H17> ATA8-ACS SATA 3.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada2: <Hitachi HDS721010KLA330 GKAOA9DA> ATA-7 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada3: <WDC WD10EZEX-00BN5A0 01.01A01> ACS-2 ATA SATA 3.x device
ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
--
Mason Loring Bliss (( "In the drowsy dark cave of the mind dreams
mason@blisses.org )) build their nest with fragments dropped
http://blisses.org/ (( from day's caravan." - Rabindranath Tagore
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