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Old 13th November 2008
DrJ DrJ is offline
ISO Quartermaster
 
Join Date: Apr 2008
Location: Gold Country, CA
Posts: 507
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Maxtor 10K5 (SCSI) about three years old:

Code:
pinot# diskinfo -c -t /dev/da2
/dev/da2
	512         	# sectorsize
	73557090304 	# mediasize in bytes (69G)
	143666192   	# mediasize in sectors
	8942        	# Cylinders according to firmware.
	255         	# Heads according to firmware.
	63          	# Sectors according to firmware.

I/O command overhead:
	time to read 10MB block      0.126083 sec	=    0.006 msec/sector
	time to read 20480 sectors   3.888857 sec	=    0.190 msec/sector
	calculated command overhead			=    0.184 msec/sector

Seek times:
	Full stroke:	  250 iter in   2.713510 sec =   10.854 msec
	Half stroke:	  250 iter in   2.131789 sec =    8.527 msec
	Quarter stroke:	  500 iter in   3.611677 sec =    7.223 msec
	Short forward:	  400 iter in   1.719398 sec =    4.298 msec
	Short backward:	  400 iter in   1.151218 sec =    2.878 msec
	Seq outer:	 2048 iter in   0.601458 sec =    0.294 msec
	Seq inner:	 2048 iter in   3.763039 sec =    1.837 msec
Transfer rates:
	outside:       102400 kbytes in   1.217299 sec =    84121 kbytes/sec
	middle:        102400 kbytes in   1.422332 sec =    71994 kbytes/sec
	inside:        102400 kbytes in   2.195861 sec =    46633 kbytes/sec
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