linux-kernel - Drop support to compressed modules?

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Date:	Fri, 21 Sep 2012 18:41:44 -0300
From:	Lucas De Marchi <lucas.demarchi@...fusion.mobi>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	linux-modules <linux-modules@...r.kernel.org>,
	Lucas De Marchi <lucas.de.marchi@...il.com>,
	Kay Sievers <kay.sievers@...y.org>,
	Dave Reisner <d@...conindy.com>
Subject: Drop support to compressed modules?

Hey,

I'd like to ask people the following question: why are you using
compressed modules? Is it only for the disk space or is there any
performance related reason?

While fixing a bug in kmod related to using compressed modules (that
already existed in module-init-tools) we stopped to think about these
questions. Dave made a couple of benchmarks and performance wise it's
better to use uncompressed modules than modules with gz or xz
compression. However the benchmark was done in only 1 computer. I do
expect people with slow storage to have different numbers though. Does
anyone have these numbers?

About the bug, I think it's fixed in
http://www.spinics.net/lists/linux-modules/msg00846.html. Need to test
a bit more before rolling out a new release.

Regards,
Lucas De Marchi
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