From: Dave Jones <davej@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: rusty@rustcorp.com.au, jcm@jonmasters.org
Subject: depmod memory usage.
Date: Fri, 18 Nov 2011 15:35:49 -0500 [thread overview]
Message-ID: <20111118203548.GA17761@redhat.com> (raw)
I pulled out an older laptop last night to test something, and built
a kernel on it. When I did the make install part, the machine almost
ground to a halt.
It turned out that depmod used at peak 1.7GB of memory, (the laptop only had 1GB,
so it was swapping to the point of locking up interactivity for minutes
at a time). It took an hour to complete.
The config file is pretty pathological (it's a distro build, so tons of
modules -- http://codemonkey.org.uk/junk/fedora-config-x86-64)
It's been a while since I built on a machine with this amount of memory,
but it seems that depmod has taken a big step backwards as it used to
cope with this just fine.
This is with the m-i-t that shipped in Fedora 16 (3.16)
Dave
next reply other threads:[~2011-11-18 20:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-18 20:35 Dave Jones [this message]
2011-11-18 21:35 ` depmod memory usage Jon Masters
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