Тестване на ефективността на диска под FreeBSD
В конзола с root права напишете следната команда :
/dev/ad8s1d e диска 
при което трябва да получите подобен резултат:
512 # sectorsize
157283771904 # mediasize in bytes (146G)
307194867 # mediasize in sectors
304756 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:GEAR34RF1SGM2As0s3 # Disk ident.
I/O command overhead:
time to read 10MB block 0.126886 sec = 0.006 msec/sector
time to read 20480 sectors 4.476846 sec = 0.219 msec/sector
calculated command overhead = 0.212 msec/sector
а сега напишете същата команда но с опция "-t"
При което трябва да получите подобно на това :
512 # sectorsize
157283771904 # mediasize in bytes (146G)
307194867 # mediasize in sectors
304756 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:GEAR34RF1SGM2As0s3 # Disk ident.
Seek times:
Full stroke: 250 iter in 5.249738 sec = 20.999 msec
Half stroke: 250 iter in 4.262492 sec = 17.050 msec
Quarter stroke: 500 iter in 6.906500 sec = 13.813 msec
Short forward: 400 iter in 2.970964 sec = 7.427 msec
Short backward: 400 iter in 1.979958 sec = 4.950 msec
Seq outer: 2048 iter in 0.274630 sec = 0.134 msec
Seq inner: 2048 iter in 0.476706 sec = 0.233 msec
Transfer rates:
outside: 102400 kbytes in 1.308142 sec = 78279 kbytes/sec
middle: 102400 kbytes in 1.258525 sec = 81365 kbytes/sec
inside: 102400 kbytes in 1.368053 sec = 74851 kbytes/sec
Все още няма връзки за обратно следене.