USB does use DMA. Check the kernel source doco Documentation/usb/dma.txt
On Mon, Oct 24 2011, Michael Mol wrote:
> On Oct 24, 2011 7:21 PM, "walt" wrote:
>>
>> Now, lack of DMA is another story for hard disks, certainly. Here's
>> where my ignorance of hardware limits my thinking:
>>
>> AFAIK the device driver *always* sits between the disk drive and the
>> DMA hardw
On Oct 24, 2011 7:21 PM, "walt" wrote:
>
> On 10/24/2011 10:28 AM, walt wrote:
> > ...
> > Over at least six trials on each docking station I consistently
> > get 105 seconds for USB and 84 seconds for e-sata, a 5:4 ratio
> > in favor of e-sata/sata over USB3/sata...
>
> Wow, lots of great answers
On Mon, Oct 24, 2011 at 4:31 PM, Grant Edwards
wrote:
> On 2011-10-24, Florian Philipp wrote:
>> Am 24.10.2011 22:02, schrieb Grant Edwards:
>>> On 2011-10-24, walt wrote:
>>>
I just bought an add-on USB3 adapter and outboard USB3/sata docking
station, and I've been comparing the perfo
Am 24.10.2011 22:02, schrieb Grant Edwards:
> On 2011-10-24, walt wrote:
>
>> I just bought an add-on USB3 adapter and outboard USB3/sata docking
>> station, and I've been comparing the performance with my old e-sata
>> outboard docking station. Not so good :(
>>
>> After getting some unreliable
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