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Date: Wed, 03 Mar 2010 08:29:14 -0800
From: Tim Kientzle <kientzle@freebsd.org>
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To: Adrian Chadd <adrian@freebsd.org>
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Cc: freebsd-hackers@freebsd.org, Alex RAY <ray@ddteam.net>,
	Ivan Voras <ivoras@freebsd.org>
Subject: Re: GEOM_ULZMA
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Adrian Chadd wrote:
> On 21 February 2010 02:20, Adrian Chadd <adrian@freebsd.org> wrote:
>> Oh I know that! I'm just saying that I may try lzma'ing the kernel and
>> rootfs's to see what kind of savings I get over gzip. :)
> 
> The answer is "whoa". 24 megabyte compressed kernel + MDROOT drops to
> 6.5 megabytes with gzip -9 and a few bytes shy of 5 megabytes with a
> default lzma compress.

Interesting question:  What is the impact on boot speed?
It could be a lot faster to load 5MB from disk and
decompress to a 24MB image than to wait for 24MB from
disk.

> This is +1 for GEOM_ULZMA too if it's as effective for the mfs itself.
> I'll toy with that later.

Let us know what you find.

Tim