Mike Pumford <mpumf...@mudcovered.org.uk> writes: > On 24/11/2023 16:28, Patrick Welche wrote: >> I notice that my artifacts (8th gen) disappear really quickly / >> hardly exist if the system is under load. Otherwise, they also self >> clear after about a second. Someone (tnn? rvp?) mentioned the >> possibility of cache lines not being flushed in this context. >> > That matches my experience exactly. They completely disappear if the > system is under any sort of load. I'd always assumed it was a cache > thing and got exactly the same behaviour on 9-STABLE as well.
Do we think that the GPU reads from RAM separately from the CPU cache, so that bits written to a write-back cache are not in memory and thus not rendered correctly? Is there some way to flush that cache after writing, or to set that region to write-through, or ?
