From: "Øyvind Harboe" <oyvind.harboe@zylin.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: Prune obsolete raw_node_ref's from RAM
Date: Wed, 14 Jul 2004 08:51:09 +0200 [thread overview]
Message-ID: <1089787869.7607.9.camel@famine> (raw)
In-Reply-To: <1089787265.8822.31.camel@imladris.demon.co.uk>
On Wed, 2004-07-14 at 08:41, David Woodhouse wrote:
> On Wed, 2004-07-14 at 08:26 +0200, Øyvind Harboe wrote:
> > Would all the performance problems go away if the lists were doubly
> > linked?
>
> Well yes, but since the object of the exercise was to save memory,
> doubling the size of the objects in question doesn't really strike me as
> being the right way to approach the problem :)
The memory problem I ran into wasn't the size of the un-obsolete nodes,
but that they grew with the number of obsolete nodes.
I hate #if's in code as much as the next guy, but JFFS2 spans deeply
embedded systems to full-fledged PCs and it is only to be expected that
the different profiles have different needs.
--
Øyvind Harboe
http://www.zylin.com
next prev parent reply other threads:[~2004-07-14 6:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-13 14:18 Prune obsolete raw_node_ref's from RAM Øyvind Harboe
2004-07-13 23:14 ` David Woodhouse
2004-07-14 6:26 ` Øyvind Harboe
2004-07-14 6:41 ` David Woodhouse
2004-07-14 6:51 ` Øyvind Harboe [this message]
2004-07-14 7:08 ` David Woodhouse
2004-07-14 7:27 ` Øyvind Harboe
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