On Fri, 7 Jul 2006, naveen kumar wrote:
> Hi all,
>
> I want to know the performance of host controller
> hardware.How can I calculate the performance(speed) of
> any embedded USB host controller which is running
> linux on it.
Do you realize that this question is meaningless?
> Is there anything to take into account ( like speed of
> transfers ) apart from the working of any embedded
> host controller while judging the quality of that
> embedded host controller.
There are _lots_ of things to take into account:
The speed of the host system;
The speed of the peripheral device;
The type of data being sent;
The rate at which the data is generated;
The behavior of the device driver that's generating the data.
Plus probably many others. None of these are directly related to the
quality of the host controller, yet they all affect the performance.
Alan Stern
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