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Post subject: DMA
 Posted: Feb 24, 2008 - 07:22 AM
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Forum Moderator
Joined: Jan 25, 2008
Posts: 213
Location: UK
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Can you please tell me how-to check if DMA is Switched on in Parsix. If I use
root@desktop:/home/kelvin# sudo hdparm -X -d1 --verbose /dev/sda
/dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
setting xfermode to 0 (default PIO mode)
outgoing cdb: 85 06 20 00 03 00 00 00 00 00 00 00 00 40 ef 00
SG_IO: ATA_16 status=0x2, host_status=0x0, driver_status=0x8
SG_IO: bad/missing ATA_16 sense data:: 70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
HDIO_DRIVE_CMD(setxfermode) failed: Input/output error
root@desktop:/home/kelvin#
If I use this
root@desktop:/home/kelvin# sudo hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 994 MB in 2.00 seconds = 496.67 MB/sec
Timing buffered disk reads: 142 MB in 3.01 seconds = 47.17 MB/sec
root@desktop:/home/kelvin#
If I use this
root@desktop:/home/kelvin# sudo hdparm -i /dev/sda
/dev/sda:
Model=WDC WD1200JB-00DUA3 , FwRev=75.13B75, SerialNo=WD-WMACM1762675
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=74
BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=234441648
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: Unspecified: ATA/ATAPI-1,2,3,4,5,6
* signifies the current active mode
root@desktop:/home/kelvin#
Finally this
root@desktop:/home/kelvin# dmesg |grep ata
BIOS-e820: 000000007fff3000 - 0000000080000000 (ACPI data)
Memory: 2067772k/2097088k available (2247k kernel code, 28056k reserved, 798k data, 252k init, 1179584k highmem)
.data : 0xc0431e36 - 0xc04f96e4 ( 798 kB)
libata version 2.21 loaded.
pata_amd 0000:00:09.0: version 0.3.9
scsi0 : pata_amd
scsi1 : pata_amd
ata1: PATA max UDMA/133 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001f000 irq 14
ata2: PATA max UDMA/133 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001f008 irq 15
ata1.00: ATA-6: WDC WD1200JB-00DUA3, 75.13B75, max UDMA/100
ata1.00: 234441648 sectors, multi 16: LBA48
ata1.01: ATA-7: WDC WD2500JB-55REA0, 20.00K20, max UDMA/100
ata1.01: 488397168 sectors, multi 16: LBA48
ata1.00: configured for UDMA/100
ata1.01: configured for UDMA/100
ata2.00: ATAPI: DVDR PX-750A, 1.03, max UDMA/66
ata2.01: ATAPI: LITE-ON DVD SOHD-16P9SV, F$02, max UDMA/33
ata2.00: configured for UDMA/66
ata2.01: configured for UDMA/33
root@desktop:/home/kelvin#
I'm pretty sure it is but their must be a better way to check I use ata Not Sata hdrives I think this is where the confusion is Ubuntu lists the disks as /dev/hda parsix and most others /dev/sda. the first test in Ubuntu says DMA on the next 2 are similar, but will not perform dmesg |grep ata |
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