linux-kernel - Re: [kernel.org users] XZ Migration discussion

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Date:	Sun, 14 Feb 2010 19:39:52 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Pavel Machek <pavel@....cz>
CC:	Jean Delvare <khali@...ux-fr.org>, Willy Tarreau <w@....eu>,
	mirrors@...nel.org, lasse.collin@...aani.org,
	linux-kernel <linux-kernel@...r.kernel.org>, users@...nel.org,
	"FTPAdmin Kernel.org" <ftpadmin@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [kernel.org users] XZ Migration discussion

Pavel Machek wrote:
[Jean Delvare wrote]
>> I have an old, slow machine here which I am going to use to perform
>> some real world testing, and I'll post the results when I'm done. But I
>> suspect that building a kernel on this machine, even a small one with
>> just the drivers it needs, will take much longer than unpacking the
>> sources. So anyone worrying about performance would rather rely on
>> cross-compilation, and in turn can afford whatever decompression tool
>> is needed.
> 
> On zaurus, kernel compilation takes 4 hours. (I.e. "one night"). So
> that one is ... well ... done overnight.
> 
> Untar is something I normally wait for, since you need to run
> (interactive) oldconfig after that.

If the download takes m minutes and unpacking and unarchiving tar.gz
takes another n minutes, what difference does it make for this workflow
when instead m + p minutes are spent for download + unpacking and
unarchiving tar.bz2 or tar.xz?
-- 
Stefan Richter
-=====-==-=- --=- -===-
http://arcgraph.de/sr/
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