On Sep 22, 2006, at 5:51 PM, hermann pitton wrote:
there was a report once caused by that on the disk dma was not
enabled.
Checked already if this could be the bottleneck with hdparm?
My drive is an SATA WD SE16 500G attached to the onboard SATA
controller. It's part of the Intel 965P southbridge IHC8 chip. With
kernel 2.6.18 I can use either AHCI or IDE mode for this controller
and have my SATA drive show up as ata1 at /dev/sda. hdparm doesn't
return info about DMA for SATA drives by testing performance looks
pretty good:
/dev/sda:
Timing cached reads: 12644 MB in 2.00 seconds = 6326.00 MB/sec
Timing buffered disk reads: 210 MB in 3.01 seconds = 69.79 MB/sec
Here is what the kernel says about it when the drivers load. All in
all, this looks pretty normal to me. Unless there's some bug in the
SATA code causing this problem? Anyone else using Fusion cards with
SATA drives?
I appreciate the fresh set of eyes looking it over.
libata version 2.00 loaded.
ata_piix 0000:00:1f.2: version 2.00
ata_piix 0000:00:1f.2: MAP [ P0 -- P1 -- ]
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 177
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ata1: SATA max UDMA/133 cmd 0xEC00 ctl 0xE882 bmdma 0xE400 irq 177
ata2: SATA max UDMA/133 cmd 0xE800 ctl 0xE482 bmdma 0xE408 irq 177
scsi0 : ata_piix
ata1.00: ATA-7, max UDMA/133, 976773168 sectors: LBA48 NCQ (depth 0/32)
ata1.00: ata1: dev 0 multi count 16
ata1.00: configured for UDMA/133
scsi1 : ata_piix
ata2.00: ATAPI, max UDMA/100
ata2.00: configured for UDMA/100
Vendor: ATA Model: WDC WD5000KS-00M Rev: 07.0
Type: Direct-Access ANSI SCSI revision: 05
Vendor: LITE-ON Model: COMBO SHC-52S7K Rev: VK02
Type: CD-ROM ANSI SCSI revision: 05
ata_piix 0000:00:1f.5: MAP [ P0 -- P1 -- ]
ACPI: PCI Interrupt 0000:00:1f.5[B] -> GSI 19 (level, low) -> IRQ 177
PCI: Setting latency timer of device 0000:00:1f.5 to 64
ata3: SATA max UDMA/133 cmd 0xD400 ctl 0xD082 bmdma 0xC880 irq 177
ata4: SATA max UDMA/133 cmd 0xD000 ctl 0xCC02 bmdma 0xC888 irq 177
scsi2 : ata_piix
ATA: abnormal status 0x7F on port 0xD407
scsi3 : ata_piix
ATA: abnormal status 0x7F on port 0xD007
SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
sda: sda1 sda2 sda3 sda4 < sda5 >
sd 0:0:0:0: Attached scsi disk sda
sr0: scsi3-mmc drive: 47x/62x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 1:0:0:0: Attached scsi CD-ROM sr0
--
Scott
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