From mboxrd@z Thu Jan 1 00:00:00 1970 From: "kyle" Subject: Re: ahci performance problem? (much slower than sil24) Date: Wed, 23 Apr 2008 09:51:29 +0800 Message-ID: <006801c8a4e4$8ef99840$0a01a8c0@kylecea1512a3f> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="big5"; reply-type=original Content-Transfer-Encoding: 7bit Return-path: Received: from crux.i-cable.com ([203.83.115.104]:39178 "HELO crux.i-cable.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755727AbYDWBvr (ORCPT ); Tue, 22 Apr 2008 21:51:47 -0400 Received: from kylecea1512a3f (cm218-254-60-144.hkcable.com.hk [218.254.60.144]) by xenon.i-cable.com (8.13.5/8.13.5) with SMTP id m3N1pV1h028280 for ; Wed, 23 Apr 2008 09:51:35 +0800 (CST) Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Sorry again, please cc me if possible as I'm not subscribed. Thanks ----- Original Message ----- From: "kyle" To: Sent: Wednesday, April 23, 2008 9:37 AM Subject: ahci performance problem? (much slower than sil24) > Sorry ... pressed the wrong key and sent the unfinished email ... > > Hi, > I've built a new machine with Intel Desktop Board DQ35JO, Intel E2160 CPU, > and 8 x Seagate ST3500320AS 500MB SATA harddisks. 6 of the 8 harddisks are > connected to the motherboard's SATA ports, while the remaining 2 are > connected to a 2 ports PCI-E card with sil24. > > kernel is 2.6.24.5, have tried fedora kernel 2.6.23.1-42 and 2.6.24.4-64, > all give the same result. > > sda,b,c .... to sdf are running ahci driver, sdg and sdh are running sil24 > driver > > hdparm -t /dev/sd{a-f} give around 45-46MB/sec > [root@localhost log]# hdparm -t /dev/sda > /dev/sda: > Timing buffered disk reads: 140 MB in 3.02 seconds = 46.42 MB/sec > > hdparm -t /dev/sdg and sdh give over 105MB/sec > [root@localhost log]# hdparm -t /dev/sdg > /dev/sdg: > Timing buffered disk reads: 316 MB in 3.01 seconds = 105.13 MB/sec > > had updated to latest BIOS, no change in hdparm test b4/after update. > hdparm -i: > > [root@localhost boot]# hdparm -i /dev/sda > /dev/sda: > Model=ST3500320AS , FwRev=SD15 , SerialNo= > 9QM2Q7F4 > Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } > RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 > BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16? > CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 > IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} > PIO modes: pio0 pio1 pio2 pio3 pio4 > DMA modes: mdma0 mdma1 mdma2 > UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 > AdvancedPM=no WriteCache=enabled > Drive conforms to: unknown: ATA/ATAPI-4,5,6,7 > * signifies the current active mode > > [root@localhost boot]# hdparm -i /dev/sdb > > /dev/sdb: > > Model=ST3500320AS , FwRev=SD15 , SerialNo= > 9QM2H18H > Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } > RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 > BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16? > CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 > IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} > PIO modes: pio0 pio1 pio2 pio3 pio4 > DMA modes: mdma0 mdma1 mdma2 > UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 > AdvancedPM=no WriteCache=enabled > Drive conforms to: unknown: ATA/ATAPI-4,5,6,7 > > * signifies the current active mode > > ........................... > > [root@localhost boot]# hdparm -i /dev/sdg > > /dev/sdg: > > Model=ST3500320AS , FwRev=SD15 , SerialNo= > 9QM2LE0C > Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } > RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 > BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16? > CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 > IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} > PIO modes: pio0 pio1 pio2 pio3 pio4 > DMA modes: mdma0 mdma1 mdma2 > UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 > AdvancedPM=no WriteCache=enabled > Drive conforms to: unknown: ATA/ATAPI-4,5,6,7 > > * signifies the current active mode > > attached dmesg > > Please help, thank you very much > > Regards, > Kyle > > > >