2014-08-15 7:04 GMT+09:00 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>: > On Tue, 5 Aug 2014 23:38:31 +0900 Akinobu Mita <akinobu.mita@xxxxxxxxx> wrote: > >> This patchset implements readpages() operation for block device by >> using mpage_readpages() which can create multipage BIOs instead of >> BIOs for each page and reduce system CPU time consumption. > > Patchset is simple and straightforward enough. But who the > heck cares about the performance of buffered reads from /dev/XXX? I tend to consider the block device as a baseline when I measure the performance of the storage device. So I was a bit surprised when I saw the performance of buffered reads from filesystem is better than the one from block device. That is the reason about this patch for me. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
