Re: DMA aktivieren

[Frank Küster <frank@debian.org>]

Thomas Kosch <t.kosch@schuckeduster.org> wrote:

> Am 19.05.2006 um 22:41 schrieb Frank Küster:
>
>> Hm, meine Platte ist /dev/sda (SATA oder wie das heißt, ein neuer
>
> Das ist natürlich etwas ganz anderes.
>
>> Thinkpad).  In /proc/scsi kommt der String "dma" nicht vor.  Ist da
>> DMA
>> gar kein Thema mehr?
>
> Some flags, like "-d", are not supported by libata. Currently, ALL
> SATA hard drives use DMA, 

Das klingt doch gut.  Übrigens kann ich hdparm doch mehr Informationen
entlocken, nämlich mit -I.  Nicht dass ich viel damit anfangen könnte...

# hdparm -I /dev/sda

/dev/sda:

ATA device, with non-removable media
	Model Number:       TOSHIBA MK8032GAX                       
	Serial Number:      X5MI0746S
	Firmware Revision:  AB311E  
Standards:
	Supported: 6 5 4 3 
	Likely used: 6
Configuration:
	Logical		max	current
	cylinders	16383	16383
	heads		16	16
	sectors/track	63	63
	--
	CHS current addressable sectors:   16514064
	LBA    user addressable sectors:  156301488
	LBA48  user addressable sectors:  156301488
	device size with M = 1024*1024:       76319 MBytes
	device size with M = 1000*1000:       80026 MBytes (80 GB)
Capabilities:
	LBA, IORDY(can be disabled)
	bytes avail on r/w long: 68	Queue depth: 1
	Standby timer values: spec'd by Standard, no device specific minimum
	R/W multiple sector transfer: Max = 16	Current = 16
	Advanced power management level: unknown setting (0x0080)
	DMA: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 
	     Cycle time: min=120ns recommended=120ns
	PIO: pio0 pio1 pio2 pio3 pio4 
	     Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
	Enabled	Supported:
	   *	NOP cmd
	   *	READ BUFFER cmd
	   *	WRITE BUFFER cmd
	   *	Host Protected Area feature set
	   *	Look-ahead
	   *	Write cache
	   *	Power Management feature set
		Security Mode feature set
	   *	SMART feature set
	   *	FLUSH CACHE EXT command
	   *	Mandatory FLUSH CACHE command 
	   *	Device Configuration Overlay feature set 
	   *	48-bit Address feature set 
		SET MAX security extension
	   *	Advanced Power Management feature set
	   *	DOWNLOAD MICROCODE cmd
	   *	General Purpose Logging feature set
	   *	SMART self-test 
	   *	SMART error logging 
Security: 
	Master password revision code = 65534
		supported
	not	enabled
	not	locked
		frozen
	not	expired: security count
	not	supported: enhanced erase
	64min for SECURITY ERASE UNIT. 
HW reset results:
	CBLID- above Vih
	Device num = 0 determined by the jumper
Checksum: correct

Gruß, Frank

-- 
Frank Küster
Single Molecule Spectroscopy, Protein Folding @ Inst. f. Biochemie, Univ. Zürich
Debian Developer (teTeX)