[Open-graphics] HELP: Weird discrepancy between fbZPutImage and memcpy

[Stephen Warren]

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Timothy Normand Miller wrote:
> Note:  We looked at it with a PCI bus analyzer, and what we see is
> that the x.org code results in long bursts, while ours results in
> individual transactions, which would explain why we're so slow.  What
> could x.org code be doing that would result in bursts, while ours
> doesn't?

Probably, the dcache generates bursts during write-back/flush and CPU
generates single-beat accesses when writing to uncached areas (or
write-through cache?)
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