On Wed, 08 Jun 2011 21:48:52 +0900 (JST), Ryusuke Konishi wrote: > On Fri, 3 Jun 2011 19:42:28 +0200, dexen deVries wrote: > > By the way, it seems to me that the in-kernel GC does not attempt to > > de- fragment files. Is that the case? If so, would probably mean > > extents would not help very much for fragmented files. Also, on > > magnetic media, a lot of seeking happens in case of fragmented > > files. > > Yes, but extents will decrease the amount of metadata, and this has > potential for speed up. > > NILFS2 uses 32 bytes metadata per disk block at present. I guess you > know that the number of DAT blocks are actually indispensable through > analysis using the dumpseg tool. Oh, looks confusing. I meant the amount of DAT blocks is not negligible. Regards, Ryusuke Konishi -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
