Please check whether write cache is enabled in the drive also check whether NCQ is enabled or not.
About caches please note quote from my e-mail below. Changing NCQ enabled/disabled had no effect either.
6) It is not a caching issue (controller/disk caches were off during testing, but even putting them on had minor impact on the results)
-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
