Re: Performance question, RAID5

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On 30 January 2011 01:52, Keld JÃrn Simonsen <keld@xxxxxxxxxx> wrote:
> On Sat, Jan 29, 2011 at 11:44:01PM +0000, Mathias BurÃn wrote:
>> On 29 January 2011 22:53, Roman Mamedov <rm@xxxxxxxxxx> wrote:
>> > On Sat, 29 Jan 2011 22:48:06 +0000
>> > Mathias BurÃn <mathias.buren@xxxxxxxxx> 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]
>> Â SATA controller: nVidia Corporation MCP79 AHCI Controller (rev b1)
>> Â Â host0: /dev/sda ATA Corsair CSSD-F60 {SN: 10326505580009990027}
>> Â Â host1: /dev/sdb ATA WDC WD20EARS-00M {SN: WD-WCAZA1022443}
>> Â Â host2: /dev/sdc ATA WDC WD20EARS-00M {SN: WD-WMAZ20152590}
>> Â Â host3: /dev/sdd ATA WDC WD20EARS-00M {SN: WD-WMAZ20188479}
>> Â Â host4: [Empty]
>> Â Â host5: [Empty]
>
>
> Hmm, it seems like you have 2 empty slots on the on-board ÂSATA
> 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
>

Sadly the 2 empty slots are not to be found on the motherboard, I
guess they're in the chipset only.

// Mathias
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