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i.MX6 SATA support on Nitrogen6X

Question asked by Giuseppe Pagano on Aug 26, 2012
Latest reply on Nov 1, 2012 by grantw

Hi,

does any one already tryed SATA kernel support on MX6 board with Linux O.S. ?

I'm using a Nitrogen6X, and also a custom sabre-lite with different kernel options.With both cards I have sata disk recognized and working, but after 2 minutes performance degrades rapidly.

I'm quite sure it is not a standby, or low power related problem (I've disabled it).

 

At start up performance are good:

root@linaro-ubuntu-desktop:~# hdparm -t /dev/sda

    Timing buffered disk reads: 188 MB in  3.01 seconds =  62.51 MB/sec
root@linaro-ubuntu-desktop:~# uptime
    ..... up 1 min,  ....

 

But after a while became worst:

root@linaro-ubuntu-desktop:~# hdparm -t /dev/sda
 Timing buffered disk reads:  88 MB in  3.03 seconds =  29.00 MB/sec
root@linaro-ubuntu-desktop:~# uptime
    ..... up 3 min,  ....

 

Can some one else repeat the same test ? It is not destructive.

 

Thanks in advance

Giuseppe.

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