> I really don't think that's any part of the issue, the same memory and > bridge went 4-5x faster in other read cases. The truth is that the > raid-1 performance is really bad, and it's the code causing it AFAIK. If > you track the actual io it seems to read one drive at a time, in order, > without overlap. Make sure the readahead is set to be a fair bit over the stripe size if you are doing bulk data tests for a single file. (Or indeed in the real world for that specific case ;)) -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html