Re: Linux 2.6.29

[Jeff Garzik]

Mark Lord wrote:
> Jeff Garzik wrote:
> > I've attached 'hdparm -I' in case anyone is curious.  It's from 
> > newegg.com, so nothing NDA'd or sekrit.
> >
> > ATA device, with non-removable media
> >     Model Number:       G.SKILL 128GB SSD                       
> >     Serial Number:      MK0108480A545003B       Firmware Revision:  
> > 02.10104
> > Standards:
> >     Used: ATA/ATAPI-7 T13 1532D revision 4a     Supported: 8 7 6 5 & 
> > some of 8
> > Configuration:
> >     Logical        max    current
> >     cylinders    16383    16383
> >     heads        16    16
> >     sectors/track    63    63
> >     --
> >     CHS current addressable sectors:   16514064
> >     LBA    user addressable sectors:  250445824
> >     device size with M = 1024*1024:      122288 MBytes
> >     device size with M = 1000*1000:      128228 MBytes (128 GB)
> ..
>
> That's odd.  I kind of expected to see the sector size,
> cache size, and perhaps media rotation rate reported there..
> Can you update your hdparm (sourceforge) and repost?
>
> There might be other useful features of that drive,
> which some of us are quite curious to know about!  :)

Here's output of hdparm 9.12, from Fedora rawhide.

I was unaware that both read-ahead and writeback caching were disabling 
on this drive, until that was pointed out to me in email.  huh.

I'll have to redo my tests...

	Jeff




/dev/sdb:

ATA device, with non-removable media
	Model Number:       G.SKILL 128GB SSD                       
	Serial Number:      MK0108480A545003B   
	Firmware Revision:  02.10104
Standards:
	Used: ATA/ATAPI-7 T13 1532D revision 4a 
	Supported: 8 7 6 5 & some of 8
Configuration:
	Logical		max	current
	cylinders	16383	16383
	heads		16	16
	sectors/track	63	63
	--
	CHS current addressable sectors:   16514064
	LBA    user addressable sectors:  250445824
	Logical/Physical Sector size:           512 bytes
	device size with M = 1024*1024:      122288 MBytes
	device size with M = 1000*1000:      128228 MBytes (128 GB)
	cache/buffer size  = unknown
Capabilities:
	LBA, IORDY(can be disabled)
	Standby timer values: spec'd by Standard, no device specific minimum
	R/W multiple sector transfer: Max = 1	Current = ?
	Recommended acoustic management value: 128, current value: 254
	DMA: 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:
	   *	SMART feature set
	   *	Power Management feature set
	   *	Write cache
	    	Look-ahead
	   *	Mandatory FLUSH_CACHE
	   *	Gen1 signaling speed (1.5Gb/s)
	   *	Gen2 signaling speed (3.0Gb/s)
	   *	Host-initiated interface power management
	   *	Phy event counters
Checksum: correct