linux-kernel - Re: [PATCH] init: bzip2 or lzma -compressed kernels and initrds

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Message-ID: <c384c5ea0809261153t2c3a73c2sb46979962e8d1f8c@mail.gmail.com>
Date:	Fri, 26 Sep 2008 20:53:09 +0200
From:	"Leon Woestenberg" <leon.woestenberg@...il.com>
To:	"Steven Noonan" <steven@...inklabs.net>
Cc:	"Bill Davidsen" <davidsen@....com>,
	"Frans Meulenbroeks" <fransmeulenbroeks@...il.com>,
	"Rob Landley" <rob@...dley.net>, "Willy Tarreau" <w@....eu>,
	"Alain Knaff" <alain@...ff.lu>, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] init: bzip2 or lzma -compressed kernels and initrds

Hello all,

On Mon, Sep 15, 2008 at 7:28 PM, Steven Noonan <steven@...inklabs.net> wrote:
> On Mon, Sep 15, 2008 at 10:13 AM, Bill Davidsen <davidsen@....com> wrote:
>> Frans Meulenbroeks wrote:
>>>
>>> For kernel/ramfsimage etc the best choice is the one that has the
>>> fastest decompression (info on tukaani.org says gzip).
>>> Rationale: as it uncompresses faster the system will boot faster.
>>> ...
>
> It all really depends on what you're prioritizing.

Exactly.

Whenever LZMA comes up people start discussing the differences and
then discuss what is THE best.
So far, IMHO there is NONE. Selecting the best filesystem is about
making trade-offs depending on what you need.

For example, the systems I use squashfs for, are intended to be booted
only *once* (or incidently after a firmware upgrade). I do not care
about the memory it takes, or if takes twice as long. Also, I need the
rootfs to be read-only. Distributing over any media and uploading
Linux/FPGA firmware over very slow device backplanes is my main
concern.
Squashfs w/ LZMA works best for me, because smallest. Kudos.

Linux, THE best if you need choice.

Regards,
-- 
Leon
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