[U-Boot] am335x: cpsw: optimize cpsw_recv to increase network performance

[Tom Rini]

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On 12/12/2013 08:24 AM, Stefan Roese wrote:
> On 12.12.2013 14:20, Vladimir Koutny wrote:
>> 
>> On 12/12/13 13:37, Tom Rini wrote:
>>> On 12/12/2013 03:34 AM, Stefan Roese wrote:
>>>> I just tested on dxr2 (AM3352 based board) with latest
>>>> mainline U-Boot. And the network performance is a bit better.
>>>> But not as good as yours. Here my numbers:
>>> 
>>>> Without this patch:	~400 KiB/s With this patch:	~570 KiB/s
>>> 
>>>> Any ideas what might be missing on my platform? Why the speed
>>>> is not as good?
>>> 
>>> I only got a small increase as well until I also grabbed the
>>> dcache enable patch.  I need to find some time today to clean
>>> out the TI queue again.
>>> 
>> 
>> Good point - indeed I had I/D caches enabled for other reasons
>> already (md5/sha1 caclulations, ..)
> 
> Hmmm. I expected that caches are enabled already. Since I didn't
> see any "D-Cache disabled message" in the startup log.
> 
> If this is not that case, then such cache support would be greatly 
> appreciated. :)

Check your logs?  Unless you've also got a patched tree you should see
"WARNING: Caches disabled" or so, because, yeah, oops, am335x got in
with caches disabled, and then I forgot about it.

- -- 
Tom
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