Sorry again, please cc me if possible as I'm not subscribed. Thanks
----- Original Message -----
From: "kyle" <kylewong@xxxxxxxxxx>
To: <linux-ide@xxxxxxxxxxxxxxx>
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
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