[ltp] Slightly OT: Filesystem performance on SSD vs HDD: test data request

[Theodore Tso]

On Tue, Aug 18, 2009 at 07:23:08PM +0200, Volker Krueger wrote:
> 
> hdparm -t gives me on my X25 SSD, 128Gig a rate of  219.30 MB/sec.
> I did not do any tuning of the SSD.
> I am surprised that your value is so much lower.

Well, here's the vital stats:

[    2.516819] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    2.517772] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
[    2.517783] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
[    2.517792] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[    2.518143] ata1.00: ATA-7: INTEL SSDSA2MH080G1GC, 045C8820, max UDMA/133
[    2.518152] ata1.00: 156301488 sectors, multi 16: LBA48 NCQ (depth 31)
[    2.519172] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
[    2.519182] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
[    2.519192] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[    2.519591] ata1.00: configured for UDMA/133
[    2.531043] ata1.00: configured for UDMA/133
[    2.531054] ata1: EH complete

/dev/sda:
 Timing cached reads:   3816 MB in  2.00 seconds = 1911.36 MB/sec
 Timing buffered disk reads:  454 MB in  3.01 seconds = 150.79 MB/sec


/dev/sda:

 Model=INTEL SSDSA2MH080G1GC                   , FwRev=045C8820, SerialNo=CVEM847000DG080DGN  
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1:  ATA/ATAPI-2,3,4,5,6,7

 * signifies the current active mode


/dev/sda:

ATA device, with non-removable media
	Model Number:       INTEL SSDSA2MH080G1GC                   
	Firmware Revision:  045C8820
	Transport:          Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5
Standards:
	Used: ATA/ATAPI-7 T13 1532D revision 1 
	Supported: 7 6 5 4 
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)
	Queue depth: 31
	Standby timer values: spec'd by Standard, no device specific minimum
	R/W multiple sector transfer: Max = 16	Current = 16
	DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
	     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
	    	Security Mode feature set
	   *	Power Management feature set
	   *	Write cache
	   *	Look-ahead
	   *	Host Protected Area feature set
	   *	WRITE_BUFFER command
	   *	READ_BUFFER command
	   *	NOP cmd
	   *	DOWNLOAD_MICROCODE
	   *	48-bit Address feature set
	   *	Device Configuration Overlay feature set
	   *	Mandatory FLUSH_CACHE
	   *	FLUSH_CACHE_EXT
	   *	SMART error logging
	   *	SMART self-test
	   *	General Purpose Logging feature set
	   *	64-bit World wide name
	   *	IDLE_IMMEDIATE with UNLOAD
	   *	WRITE_UNCORRECTABLE_EXT command
	   *	{READ,WRITE}_DMA_EXT_GPL commands
	   *	Segmented DOWNLOAD_MICROCODE
	   *	SATA-I signaling speed (1.5Gb/s)
	   *	SATA-II signaling speed (3.0Gb/s)
	   *	Native Command Queueing (NCQ)
	   *	Device-initiated interface power management
	   *	Software settings preservation
Security: 
	Master password revision code = 65534
		supported
	not	enabled
	not	locked
		frozen
	not	expired: security count
		supported: enhanced erase
	2min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
	NAA		: 5
	IEEE OUI	: 1517
Checksum: correct