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Old 17th September 2010
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Carpetsmoker Carpetsmoker is offline
Real Name: Martin
Tcpdump Spy
 
Join Date: Apr 2008
Location: Netherlands
Posts: 2,243
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I'll try ahci and run the benchmark again, see if it matters.

I also got a SSD for my laptop, a OCZ Onyx II 32GB.
Actually the cheapest SSD, but it's fairly fast and 32GB should be enough.
IIRC I payed about 70 euro for it. So that's not bad.

Code:
[~]# dmesg | grep ^ada 
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <OCZ-ONYX 1.6> ATA-8 SATA 2.x device
ada0: 150.000MB/s transfers (SATA 1.x, UDMA6, PIO 512bytes)
ada0: Command Queueing enabled
ada0: 30533MB (62533296 512 byte sectors: 16H 63S/T 16383C)
Code:
[~]# diskinfo -c -t /dev/ada0s1f   
/dev/ada0s1f
        512             # sectorsize
        18058371584     # mediasize in bytes (17G)
        35270257        # mediasize in sectors
        0               # stripesize
        1073774080      # stripeoffset
        34990           # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        W21G9Y329504E1RF38XE    # Disk ident.

I/O command overhead:
        time to read 10MB block      0.101228 sec       =    0.005 msec/sector
        time to read 20480 sectors   2.086315 sec       =    0.102 msec/sector
        calculated command overhead                     =    0.097 msec/sector

Seek times:
        Full stroke:      250 iter in   0.037098 sec =    0.148 msec
        Half stroke:      250 iter in   0.036503 sec =    0.146 msec
        Quarter stroke:   500 iter in   0.073275 sec =    0.147 msec
        Short forward:    400 iter in   0.058375 sec =    0.146 msec
        Short backward:   400 iter in   0.058785 sec =    0.147 msec
        Seq outer:       2048 iter in   0.224201 sec =    0.109 msec
        Seq inner:       2048 iter in   0.223191 sec =    0.109 msec
Transfer rates:
        outside:       102400 kbytes in   0.969869 sec =   105581 kbytes/sec
        middle:        102400 kbytes in   1.012393 sec =   101146 kbytes/sec
        inside:        102400 kbytes in   0.963893 sec =   106236 kbytes/sec
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