TX53-8030 Memory Speed

[Sascha Hauer]

On Thu, Nov 15, 2012 at 07:59:22AM +0100, Günter Gebhardt wrote:
> Hello,
> 
> we integrated KARO TX53-8030 support into our barebox 2012.07.0 some month 
> ago.
> 
> We measured the performance of memcpy() and found that the throughput is only 
> 19MB/s. We expected it to be something like 10 times faster.
> 
> We saw that there is support for the TX-53 in general within the head of 
> barebox.
> 
> Within the file arch/arm/boards/karo-tx53/flash_header.c it 
> is stated that it only supports TX53 1011 (i.e. 1GB RAM).

Support for the TX53-8030 is currently in the -next branch, but
unfortunately it doesn't seem to work properly, see this thread:

http://lists.infradead.org/pipermail/barebox/2012-November/010983.html

> 
> Do You have settings applicable to our device? 
> 
> What throughput do You expect from this device? 

Just rechecked on my 1011 board (I can't find the 8030 board atm,
otherwise I would have fixed the support already), it's about
230MB/s using memcpy on the commandline. Probably you don't have
the MMU turned on which means you're running without data chaches.

Sascha

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