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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 15K2 (SCSI), also about three years old.

Code:
diskinfo -c -t /dev/da0
/dev/da0
	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      0.115576 sec	=    0.006 msec/sector
	time to read 20480 sectors   2.665809 sec	=    0.130 msec/sector
	calculated command overhead			=    0.125 msec/sector

Seek times:
	Full stroke:	  250 iter in   1.931961 sec =    7.728 msec
	Half stroke:	  250 iter in   1.526477 sec =    6.106 msec
	Quarter stroke:	  500 iter in   2.579356 sec =    5.159 msec
	Short forward:	  400 iter in   1.369708 sec =    3.424 msec
	Short backward:	  400 iter in   1.230223 sec =    3.076 msec
	Seq outer:	 2048 iter in   0.219476 sec =    0.107 msec
	Seq inner:	 2048 iter in   2.323221 sec =    1.134 msec
Transfer rates:
	outside:       102400 kbytes in   1.088818 sec =    94047 kbytes/sec
	middle:        102400 kbytes in   1.177631 sec =    86954 kbytes/sec
	inside:        102400 kbytes in   1.517659 sec =    67472 kbytes/sec
And yes, all my BSD boxes use SCSI drives.

Last edited by DrJ; 13th November 2008 at 02:03 AM.
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