Că tot veni vorba despre hard-disc-uri, am zis să testez performanțele a două modele de disc-uri pe care le am instalate.
1. Hard disc Western Digital Caviar SE16 WDC WD2500KS-00MJB0, capacitate 250GB, interfață SATA 2, 16MB cache, 7200 rot/min:
/dev/ad6
512 # sectorsize
250059350016 # mediasize in bytes (233G)
488397168 # mediasize in sectors
0 # stripesize
0 # stripeoffset
484521 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
WD-WCANKM102446 # Disk ident.
Seek times:
Full stroke: 250 iter in 5.490501 sec = 21.962 msec
Half stroke: 250 iter in 3.848383 sec = 15.394 msec
Quarter stroke: 500 iter in 6.176014 sec = 12.352 msec
Short forward: 400 iter in 3.174012 sec = 7.935 msec
Short backward: 400 iter in 2.689331 sec = 6.723 msec
Seq outer: 2048 iter in 0.281978 sec = 0.138 msec
Seq inner: 2048 iter in 0.323706 sec = 0.158 msec
Transfer rates:
outside: 102400 kbytes in 1.638855 sec = 62483 kbytes/sec
middle: 102400 kbytes in 1.779411 sec = 57547 kbytes/sec
inside: 102400 kbytes in 5.445201 sec = 18806 kbytes/sec
2. Hard disc Samsung Spinpoint F3 HD103SJ, capacitate 1TB, interfață SATA 2, 32 MB cache, 7200 rot/min:
/dev/ad8
512 # sectorsize
1000204886016 # mediasize in bytes (932G)
1953525168 # mediasize in sectors
0 # stripesize
0 # stripeoffset
1938021 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
S246J9FZA11635 # Disk ident.
Seek times:
Full stroke: 250 iter in 5.312748 sec = 21.251 msec
Half stroke: 250 iter in 3.956796 sec = 15.827 msec
Quarter stroke: 500 iter in 6.356040 sec = 12.712 msec
Short forward: 400 iter in 1.277600 sec = 3.194 msec
Short backward: 400 iter in 3.274887 sec = 8.187 msec
Seq outer: 2048 iter in 0.126205 sec = 0.062 msec
Seq inner: 2048 iter in 0.127727 sec = 0.062 msec
Transfer rates:
outside: 102400 kbytes in 0.756000 sec = 135450 kbytes/sec
middle: 102400 kbytes in 0.843101 sec = 121456 kbytes/sec
inside: 102400 kbytes in 1.298209 sec = 78878 kbytes/sec
Se observă ușor diferențele de viteze între cele două modele. Câștigător iese Samsung Spinpoint.
Testele au fost făcute pe o mașina care rulează FreeBSD 8.1-STABLE amd64 pe hardware-ul placa de baza MSI 880GM-E41,
socket AM3, Procesor AMD Athlon II X4 640 Quad Core, 3000MHz, socket AM3, 8GB RAM (4 x 2048 MB), DDR3, 1333MHz, ValueRam).
S-a folosit comanda: diskinfo.
Eu zic sa te gandesti si la Seagate, eu asta as alege, parerea mea.