linux-kernel - Re: [PATCH] Compress kernel modules on installation

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Date:	Sat, 27 Dec 2008 00:49:15 +0100
From:	"Roland" <devzero@....de>
To:	<davidsen@....com>
Cc:	<linux-kernel@...r.kernel.org>,
	"Jan Engelhardt" <jengelh@...ozas.de>
Subject: Re: [PATCH] Compress kernel modules on installation

> >>> what about some "make modules_install_compressed" instead ?
> >>>
> >>> as i have run out of diskspace quite often when installing test
> >>> kernels, i
> >>> think we really need a feature like this.
> >>>
> >>> i`d also favour the makefile approach.
> >>> why another kconfig option?
> >>>
> >>> jan`s patch looks clean and simple, but i think it`s a little bit
> >>> intrusive...
> >>
> >> Why so? module-ini
> >
> > with "intrusive" i meant, that all modules are now compressed by default
> > and there is no switch to build them uncompressed.
> > so you change a long established default which may not be welcomed by
> > everyone and give no option for conservative people.
> >
> How many people use the option to install an uncompressed kernel?


i don`t know, probable few to none on pc/server hardware, but things may 
look different in embedded sector...


btw, here is some real-world data on compression and block-alignment:


kernel 2.6.27.8

                               (du -sk)      (du -sk --apparent-size)
uncompressed          72140         66554
gzip                          29988         25447
gzip -9                      29892         25374

roland

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