Date: Tue, 1 Jun 1999 07:12:43 +0200 From: Eivind Eklund <eivind@FreeBSD.ORG> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: Satoshi - Ports Wraith - Asami <asami@FreeBSD.ORG>, mladavac@metropolitan.at, freebsd-ports@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: a two-level port system? (fwd) Message-ID: <19990601071242.A58405@bitbox.follo.net> In-Reply-To: <199905311206.OAA19033@labinfo.iet.unipi.it>; from Luigi Rizzo on Mon, May 31, 1999 at 02:06:22PM %2B0200 References: <199905311410.HAA51369@silvia.hip.berkeley.edu> <199905311206.OAA19033@labinfo.iet.unipi.it>
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On Mon, May 31, 1999 at 02:06:22PM +0200, Luigi Rizzo wrote:
> > Now, the problems are:
> >
> > @ It takes a long time to...what? cvsup the tree? That's already
>
> to install the port distribution. it's the slowest part of the install
> process. developers may not experience that, but all other
> users (who buy the cd) do.
This is due to FS bogons. There are two bogons in action:
(1) 'async' isn't really fully async. Directory creation is still
done synchronously.
(2) The directory inode layout algorithm is not really efficient for
things like the ports collection.
There are a number of solutions available:
(1) Change 'make release' to scan the ports collection and create an
mtree file beforehand; apply the mtree file before extracting the
collection. This will make the inode layout more efficient.
(2) Change the directory inode layout policy in the kernel to a more
efficient scheme
(3) Hit jkh with a baseball bat until he stops refusing to use soft
updates on the boot floppy during install (due to "making a point")
(4) Fix the async code so it actually is fully async
1 and 2 are alternate solutions to the same part of the problem; 3 and
4 are alternate solutions to another part of the problem. Solving any
of these would be useful, but solving one problem from each group
would give most benefit.
Eivind.
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