Date: Mon, 6 Mar 1995 14:53:14 +0800 (CST) From: Brian Tao <taob@gate.sinica.edu.tw> To: "Jordan K. Hubbard" <jkh@FreeBSD.org> Cc: current@freefall.cdrom.com Subject: Re: "Sparse" files? Message-ID: <Pine.3.87.9503061414.A9809-0100000@gate> In-Reply-To: <199503060557.VAA00476@time.cdrom.com>
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On Sun, 5 Mar 1995, Jordan K. Hubbard wrote:
>
> Do we have any support for the likes of Linux's sparse files? Patrick
> here says it saves around 25% for executables alone when run-length
> compression is done for zero'd blocks.
I thought ffs could already compress sparse files? Apple II ProDOS
does this, but it isn't strictly "compression". I think it simply
doesn't bother to allocate disk blocks for any that are completed filled
with null bytes. There's no performance hit, and this is on floppy-bound
1-MHz //e's and //c's... :)
--
Brian ("Though this be madness, yet there is method in't") Tao
taob@gate.sinica.edu.tw <-- work ........ play --> taob@io.org
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