On 03/14/2010 07:26 PM, Denys Vlasenko wrote: >> >> Yes, but it does squat for a flash disk that wants, say, 256K alignment. > > 4K makes sense. 256K not so much. > > 256K alignment is hard to swallow for a lot of reasons anyway. > Unless the filesystem packs small files into blocks a-la reiserfs, > 256K block filesystems will be very inefficient for a typical > storage scenarios. > Noone has talked about using 256K filesystem blocks. The fact of the matter, though, is that both flash and RAID have much larger alignment requirements than a mere 4K for optimal performance. You might not like it, but that's the way it is. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
