Re: [Qemu-devel] [PATCH V4 10/12] SD card users: optimize access to SDClass methods

[Igor Mitsyanko]

On 07/31/2012 10:15 PM, Anthony Liguori wrote:
> How many loop iterations that?  300us is a huge amount of time, unless
> you were looping on every byte, I have a hard time understanding that
> delta.

I'm not sure I understand what you mean, I did loop on every byte, 
that's how our SD model works. So, for 4K bytes qemu have to call 
SD_GET_CLASS >4K times.
Or you're asking about write sequence length? It was 10 writes of 4096 
bytes (not statistically reliable, I have to agree).