On 04/22/2012 11:10 AM, Wolfgang Grandegger wrote:
> But all this does not explain a factor of 3 with your driver. I doubt
> that it's due to a move from 2.6.29 -> 2.6.32. Try using ftrace to find
> out what's going on (if it's already available).
Threaded interrupts were introduced around this time. And threaded
interrupts DO have a significant impact on latencies.
--
Gilles.
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