On Sun, Jul 08, 2007 at 12:58:43AM +0100, ext Neil MacLeod wrote: > Can anyone from explain why the performance of SDHC cards is reduced when > compared with the performance of the patches made available for the > 3.2007.10-7 firmware? The new firmware achieves only 50% of the read > performance possible with the old patched kernel (5.6MB/s when 11.99Mb/s is > possible). > > I opened bug 1426[1] as an RFE for SDHC support and posted this question > there as a comment (with timings before/after) but as this bug is now > officially "resolved" I'm not sure anyone will read it, hence my reason for > posting here. I'd be grateful if someone can comment against the bug with > details explaining the need for the reduced performance.
Hi, Depends which sort of card you're using. IIRC, some cards had problems running at a higher frequency, so they have to fall back to lower speeds. Cheers, Daniel
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