linux-kernel - Re: [RFC PATCH v2 0/4] Add support for LZ4-compressed kernel

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Message-id: <alpine.LFD.2.03.1302271246440.1254@syhkavp.arg>
Date:	Wed, 27 Feb 2013 12:52:19 -0500 (EST)
From:	Nicolas Pitre <nico@...xnic.net>
To:	Joe Perches <joe@...ches.com>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Peter Korsgaard <jacmet@...site.dk>,
	"Markus F.X.J. Oberhumer" <markus@...rhumer.com>,
	Kyungsik Lee <kyungsik.lee@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Michal Marek <mmarek@...e.cz>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-kbuild@...r.kernel.org, x86@...nel.org,
	celinux-dev@...ts.celinuxforum.org,
	Nitin Gupta <nitingupta910@...il.com>,
	Richard Purdie <rpurdie@...nedhand.com>,
	Josh Triplett <josh@...htriplett.org>,
	Joe Millenbach <jmillenbach@...il.com>,
	David Sterba <dsterba@...e.cz>,
	Richard Cochran <richardcochran@...il.com>,
	Albin Tonnerre <albin.tonnerre@...e-electrons.com>,
	Egon Alter <egon.alter@....net>, hyojun.im@....com,
	chan.jeong@....com, raphael.andy.lee@...il.com
Subject: Re: [RFC PATCH v2 0/4] Add support for LZ4-compressed kernel

On Wed, 27 Feb 2013, Joe Perches wrote:

> On Wed, 2013-02-27 at 12:16 -0500, Nicolas Pitre wrote:
> > RMK says that "66% increase in decompression speed over LZO" is 
> > significant.  You apparently disagree with that.
> 
> Yeah, I can see how that can be interpreted.
> I'm referring only to the new LZO.
> 
> I guess Russell has not reviewed the new LZO.
> 
> There is apparently no speed increase for LZ4 over
> the new LZO.
> 
> I believe Markus has shown comparison testing in
> this very thread.
> 
> https://patchwork.kernel.org/patch/2187441/

Right.

Can the new LZO code be merged by Linus now?  It has been sitting in 
linux-next for quite some time.  Afterwards we could revisit lz4 
worthiness without all the present confusion.

BTW, I still wonder what that patch requiring ARM people approval is.


Nicolas
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