From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Mathias_Bur=C3=A9n?= Subject: Re: Performance question, RAID5 Date: Sun, 30 Jan 2011 01:54:42 +0000 Message-ID: References: <20110130035352.1d72e8d1@natsu> <20110130015231.GA1435@www2.open-std.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20110130015231.GA1435@www2.open-std.org> Sender: linux-raid-owner@vger.kernel.org To: =?UTF-8?Q?Keld_J=C3=B8rn_Simonsen?= Cc: Linux-RAID List-Id: linux-raid.ids On 30 January 2011 01:52, Keld J=C3=B8rn Simonsen wro= te: > On Sat, Jan 29, 2011 at 11:44:01PM +0000, Mathias Bur=C3=A9n wrote: >> On 29 January 2011 22:53, Roman Mamedov wrote: >> > On Sat, 29 Jan 2011 22:48:06 +0000 >> > Mathias Bur=C3=A9n 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 bottleneck= s >> >> are. >> > >> > How are your disks plugged in? Which controller model(s), which bu= s. >> > 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] >> =C2=A0 SATA controller: nVidia Corporation MCP79 AHCI Controller (re= v b1) >> =C2=A0 =C2=A0 host0: /dev/sda ATA Corsair CSSD-F60 {SN: 103265055800= 09990027} >> =C2=A0 =C2=A0 host1: /dev/sdb ATA WDC WD20EARS-00M {SN: WD-WCAZA1022= 443} >> =C2=A0 =C2=A0 host2: /dev/sdc ATA WDC WD20EARS-00M {SN: WD-WMAZ20152= 590} >> =C2=A0 =C2=A0 host3: /dev/sdd ATA WDC WD20EARS-00M {SN: WD-WMAZ20188= 479} >> =C2=A0 =C2=A0 host4: [Empty] >> =C2=A0 =C2=A0 host5: [Empty] > > > Hmm, it seems like you have 2 empty slots on the on-board =C2=A0SATA > controller. Try to move 2 of the disks from the other controller to t= he > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html