Ian Romanick wrote:
Roland Scheidegger wrote:
Any ideas what's causing this? Maybe fglrx reconfigures the card's caches or something like that? It would be nice if we could get that additional 10-15% performance, especially if it is as simple as writing a single register...
My guess would be that the fglrx driver uploads some new microcode when it enters 3D mode.
That shouldn't matter afaik, it may be different but it will get completely replaced again when the radeon drm module is loaded again. Unless I misunderstood something...
Makes sense.
An interesting experiment then would be to disable the drm microcode upload and see if there are further gains to be had from a newer microcode.
Keith
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