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Old 13th November 2008
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Oliver_H Oliver_H is offline
Real Name: Oliver Herold
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Join Date: May 2008
Location: Germany
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ad0: 286167MB <Seagate ST3300622A 3.AAH> at ata0-master UDMA100

Code:
/dev/ad0
	512         	# sectorsize
	300067970560	# mediasize in bytes (279G)
	586070255   	# mediasize in sectors
	581418      	# Cylinders according to firmware.
	16          	# Heads according to firmware.
	63          	# Sectors according to firmware.
	ad:5NF2VE47 	# Disk ident.

I/O command overhead:
	time to read 10MB block      0.179757 sec	=    0.009 msec/sector
	time to read 20480 sectors   1.481450 sec	=    0.072 msec/sector
	calculated command overhead			=    0.064 msec/sector

Seek times:
	Full stroke:	  250 iter in   5.713823 sec =   22.855 msec
	Half stroke:	  250 iter in   4.523551 sec =   18.094 msec
	Quarter stroke:	  500 iter in   6.768790 sec =   13.538 msec
	Short forward:	  400 iter in   2.183977 sec =    5.460 msec
	Short backward:	  400 iter in   1.524321 sec =    3.811 msec
	Seq outer:	 2048 iter in   0.169669 sec =    0.083 msec
	Seq inner:	 2048 iter in   0.191090 sec =    0.093 msec
Transfer rates:
	outside:       102400 kbytes in   1.705157 sec =    60053 kbytes/sec
	middle:        102400 kbytes in   1.945732 sec =    52628 kbytes/sec
	inside:        102400 kbytes in   3.297897 sec =    31050 kbytes/sec
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