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Ecco le prestazioni di alcune CF su Alix.

– smi model no brand (blue)
root@nethsecurity:~ # cat /proc/ide/hda/model
SMI MODEL
root@nethsecurity:~ # hdparm -tT /dev/hda

/dev/hda:
Timing cached reads:   956 MB in  2.00 seconds = 478.00 MB/sec
Timing buffered disk reads:   66 MB in  3.04 seconds =  21.71 MB/sec

root@nethsecurity:~ # dd if=/dev/zero of=/var/log/test bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 145.565 seconds, 7.4 MB/s

– transcend 300x
root@nethsecurity:~ # cat /proc/ide/hda/model
TRANSCEND
root@nethsecurity:~ # hdparm -tT /dev/hda

/dev/hda:
Timing cached reads:   920 MB in  2.00 seconds = 460.00 MB/sec
Timing buffered disk reads:   82 MB in  3.05 seconds =  26.89 MB/sec

root@nethsecurity:~ # dd if=/dev/zero of=/var/log/test bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 58.7455 seconds, 18.3 MB/s

– transcend 266x
# cat /proc/ide/hda/model
TRANSCEND
root@nethsecurity:~ # hdparm -tT /dev/hda

/dev/hda:
Timing cached reads:   920 MB in  2.00 seconds = 460.00 MB/sec
Timing buffered disk reads:   78 MB in  3.07 seconds =  25.41 MB/sec

root@nethsecurity:~ # dd if=/dev/zero of=/var/log/test bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 58.1331 seconds, 18.5 MB/s

– transcend 133x
# cat /proc/ide/hda/model
TRANSCEND
root@nethsecurity:~ # hdparm -tT /dev/hda

/dev/hda:
Timing cached reads:   916 MB in  2.00 seconds = 458.00 MB/sec
Timing buffered disk reads:   72 MB in  3.05 seconds =  23.61 MB/sec
root@nethsecurity:~ # dd if=/dev/zero of=/var/log/test bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 105.822 seconds, 10.1 MB/s

La transcend 300x esegue il factory default in 2 minuti
La transcend 133x esegue il factory default in 3:45
La SMI in 3:45 circa

 

Filippo Carletti - CTO Nethesis

Da programmatore di videogiochi a sistemista Linux: maniaco dell’ottimizzazione, sempre a basso livello. Ogni problema è una nuova sfida.

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