From: Oleg Drokin <green@namesys.com>
To: Hans Reiser <reiser@namesys.com>
Cc: Chris Dukes <pakrat@www.uk.linux.org>,
The Doctor What <docwhat@gerf.org>,
reiserfs-list@namesys.com
Subject: Re: Is it good for a PDA fs?
Date: Sun, 23 Jun 2002 11:45:36 +0400 [thread overview]
Message-ID: <20020623114536.A1003@namesys.com> (raw)
In-Reply-To: <3D15762A.3000507@namesys.com>
Hello!
On Sun, Jun 23, 2002 at 11:18:02AM +0400, Hans Reiser wrote:
> >>I think I probably care more about downloading and trying the latest
> >>kalendar than installing a new kernel on it.;-) It is nice to have ssh
> >Yes, exactly. I do not see how you (or any other user) would benefit from
> >using anything but vfat in CF, but disadvantages are pretty clear.
> Space would be saved if the journal was shrunk in size....
VFAT (fat32) addresses 512 byte blocks while reiserfs now addresses
4096 byte blocks. (not this can be theoretically decreased to 1024 byte blocks
with a patch, but in this case tree will grow very quickly and will reach
height of 5 way too soon). And while on reiserfs tails are not packed
for files over 16K (and not packed for smaller files in some cases to to avoid
"seeks"), it is impossible to spend more than 511 bytes of unused space
on vfat no matter what file size is. (vs max of 4095 bytes wasted on
reiserfs in unlucky case).
So right now I do not see noticeable space savings.
Of course I have not performed precise measurements so this is only
a theory.
Bye,
Oleg
next prev parent reply other threads:[~2002-06-23 7:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-22 16:52 Is it good for a PDA fs? The Doctor What
2002-06-22 16:57 ` Chris Dukes
2002-06-22 17:50 ` Hans Reiser
2002-06-22 19:07 ` Oleg Drokin
2002-06-22 20:56 ` Hans Reiser
2002-06-23 6:50 ` Oleg Drokin
2002-06-23 7:18 ` Hans Reiser
2002-06-23 7:45 ` Oleg Drokin [this message]
2002-06-23 8:17 ` Hans Reiser
2002-06-25 17:35 ` The Doctor What
2002-06-26 4:56 ` Oleg Drokin
2002-06-28 20:50 ` Olivier
2002-06-28 23:22 ` Jose Alberto Guzman
2002-06-28 23:35 ` Chris Dukes
2002-06-29 6:13 ` Oleg Drokin
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