[Soekris] net5501 - Enabling udma/66+ and reliability

[Rune Petersen]

Patrick Lamaizière wrote:
> Le Mon, 19 Jan 2009 23:38:01 +0100,
> Rune Petersen <rune at megahurts.dk> a écrit :
> 
>> 2) Is the 80-wire simply broken on the net5501 or isn't udma/66+
>> speeds supported? 3) since it doesn't work "out of the box"; I have
>> to ask if it is considered safe to run a SATA disk at udma/100.
> 
> I use udma/100 for 8 months and it works fine here. No problem.

Great!
> 
> The gain is quite limited:
> With dd I've got around 26 MB/s in UDMA33, and 33 MB/s in
> UDMA66/UDMA100 (on FreeBSD).

Increasing bs to 1k or 2k will make the performance gain more noticeable.
And since I'll be using the setup for recording and streaming content, I would 
expect larger block sizes to be used.


Rune Petersen