From mboxrd@z Thu Jan 1 00:00:00 1970 From: michael chang Subject: Re: journal size reiserfs vs reiser4 Date: Fri, 2 Sep 2005 12:02:54 -0400 Message-ID: References: <20050901134604.31ddd297@SiRiUS.home> <4316F9CC.2090904@namesys.com> <20050901150507.3d6f53c7@SiRiUS.home> <4316FD28.5020304@redhat.com> <43171D57.3030007@namesys.com> <431726F2.1090508@redhat.com> <4317F28F.80704@namesys.com> <4317FD1B.504@namesys.com> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: Content-Disposition: inline List-Id: Content-Type: text/plain; charset="us-ascii" To: PFC Cc: reiserfs-list@namesys.com On 9/2/05, PFC wrote: >=20 > > It could probably be a lot less than 5%, 2% is more than enough I would > > guess, but we also need to reserve space to get good performance. Maybe 2% would be necessary for the delete operations -- the rest is to prevent fragmentation (like I said) and various other tidbits.=20 Simply, if df reports more than 85% full, generally people believe that performance will go down (that space is unused, regardless).=20 It'd be interesting for an optimized read-write fileystem with repacker (not necessarily online) that still has excellent performance even at 95-97% full. > I'm more than happy to lose 3 GB on my 60 gb / 5400 rpm crap lap= top > drive and have reiser4 transform it into something that feels more like a > big f*king raptor. Everytime I boot into Windows I feel the burning pain > of this crap drive combined with the cancer of NTFS. Uh-oh this file take= s Try emptying your prefetch, and see if that helps... defragmentation won't work unless you have enough contiguous space for all of your fragmented files. Totally unlikely. And Windows takes *forever* to repack free space, and even then it doesn't do so solidly (if you have barely enough space to defragment e.g. one file). > long to load OH CRAP it's fragmented in 20000 bits (my personal record !)= . > Gee. Gotta. Defrag. Again. I've defragmented for 24-48 hours straight (repetated cycles) in proprietary and built-in defragmenters -- and still it wouldn't defragment even one or two of my largest, and most fragmented files (I believe it's about 275 MB video file in 30000-40000 pieces). Still'd love to boot Windows off a Reiser4 partition... > Note that on your average Linux system with a zillion of small fi= les the > efficient reiser4 packing will save a lot of space. Yes. > Un-tar the freedb database on a NTFS (or EXT3) partition and witn= ess how > your machine dies, then stop complaining about reiser4 eating 5% of your > space dammit. As soon as I can install root reiser4 and get repacker/resizer -- I'm patient though. ^^ --=20 ~Mike - Just my two cents - No man is an island, and no man is unable.