getting some work done today on a Raspberry Pi 3. CPU throughput seems decent but it's still way laggy, maybe FS on microsd card sucks?
AFAICT there's literally a scheduler round-trip for every 512-byte sector transfer, ...
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...even if a dma-capable spi master could queue 1000s of them in principle. Yields latency between every pair of sectors.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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