From: Sascha Hauer <s.hauer@pengutronix.de>
To: "Günter Gebhardt" <guenter.gebhardt@freenet.de>
Cc: barebox@lists.infradead.org
Subject: Re: TX53-8030 Memory Speed
Date: Thu, 15 Nov 2012 08:46:50 +0100 [thread overview]
Message-ID: <20121115074650.GT10369@pengutronix.de> (raw)
In-Reply-To: <4801591.VRVUpK1jDH@linux-xmcx>
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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prev parent reply other threads:[~2012-11-15 7:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-15 6:59 TX53-8030 Memory Speed Günter Gebhardt
2012-11-15 7:46 ` Sascha Hauer [this message]
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