From: "Keld Jørn Simonsen" <keld@keldix.com>
To: "Mathias Burén" <mathias.buren@gmail.com>
Cc: Roman Mamedov <rm@romanrm.ru>, Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: Performance question, RAID5
Date: Sun, 30 Jan 2011 02:52:31 +0100 [thread overview]
Message-ID: <20110130015231.GA1435@www2.open-std.org> (raw)
In-Reply-To: <AANLkTi=ii-iLybJBS8ncajwXWZnkwLY=u0AcQiBJKPUf@mail.gmail.com>
On Sat, Jan 29, 2011 at 11:44:01PM +0000, Mathias Burén wrote:
> On 29 January 2011 22:53, Roman Mamedov <rm@romanrm.ru> wrote:
> > On Sat, 29 Jan 2011 22:48:06 +0000
> > Mathias Burén <mathias.buren@gmail.com> wrote:
> >
> >> Hi,
> >>
> >> I'm wondering if the performance I'm getting is OK or if there's
> >> something I can do about it. Also, where the potential bottlenecks
> >> are.
> >
> > How are your disks plugged in? Which controller model(s), which bus.
> > But generally, on an Atom 1.6 Ghz those seem like good results.
> >
> > --
> > With respect,
> > Roman
> >
>
>
> Hi,
>
> Sorry, of course I should've included that. Here's the info:
>
> ~/bin $ sudo ./drivescan.sh
> Controller device @ pci0000:00/0000:00:0b.0 [ahci]
> SATA controller: nVidia Corporation MCP79 AHCI Controller (rev b1)
> host0: /dev/sda ATA Corsair CSSD-F60 {SN: 10326505580009990027}
> host1: /dev/sdb ATA WDC WD20EARS-00M {SN: WD-WCAZA1022443}
> host2: /dev/sdc ATA WDC WD20EARS-00M {SN: WD-WMAZ20152590}
> host3: /dev/sdd ATA WDC WD20EARS-00M {SN: WD-WMAZ20188479}
> host4: [Empty]
> host5: [Empty]
Hmm, it seems like you have 2 empty slots on the on-board SATA
controller. Try to move 2 of the disks from the other controller to the
on-board controller.
And I would also avoid LVM. I think LVM affects striping.
best regards
Keld
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next prev parent reply other threads:[~2011-01-30 1:52 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-29 22:48 Performance question, RAID5 Mathias Burén
2011-01-29 22:53 ` Roman Mamedov
2011-01-29 23:44 ` Mathias Burén
2011-01-29 23:57 ` Roman Mamedov
2011-01-30 0:15 ` Stan Hoeppner
2011-01-30 0:33 ` Mathias Burén
2011-01-30 0:27 ` Mathias Burén
2011-01-30 1:52 ` Keld Jørn Simonsen [this message]
2011-01-30 1:54 ` Mathias Burén
2011-01-30 5:56 ` Keld Jørn Simonsen
2011-01-30 12:12 ` Mathias Burén
2011-01-30 19:44 ` Stan Hoeppner
2011-01-30 19:46 ` Mathias Burén
2011-02-01 11:37 ` John Robinson
2011-02-01 13:53 ` Roberto Spadim
2011-02-01 14:02 ` Mathias Burén
2011-02-01 14:32 ` Roberto Spadim
2011-01-29 23:26 ` CoolCold
2011-01-30 0:18 ` Mathias Burén
2011-01-30 4:44 ` Roman Mamedov
2011-01-30 12:09 ` Mathias Burén
2011-01-30 12:15 ` Roman Mamedov
2011-01-30 19:41 ` Mathias Burén
2011-01-30 19:54 ` Roman Mamedov
2011-01-30 19:58 ` Mathias Burén
2011-01-30 20:03 ` Stan Hoeppner
2011-01-30 21:43 ` Mathias Burén
2011-01-31 3:39 ` Stan Hoeppner
2011-01-31 3:54 ` Roberto Spadim
2011-01-31 8:52 ` Keld Jørn Simonsen
2011-01-31 9:37 ` Mathias Burén
2011-01-31 13:11 ` Keld Jørn Simonsen
2011-01-31 14:43 ` Roberto Spadim
2011-01-31 18:44 ` Keld Jørn Simonsen
2011-01-31 20:42 ` NeilBrown
2011-01-31 21:41 ` Keld Jørn Simonsen
2011-01-31 21:43 ` Roberto Spadim
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