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Date: Fri, 18 Nov 2011 16:35:29 -0500 From: Jon Masters <jonathan@...masters.org> To: Dave Jones <davej@...hat.com> Cc: Linux Kernel <linux-kernel@...r.kernel.org>, rusty@...tcorp.com.au, jcm@...masters.org Subject: Re: depmod memory usage. On Fri, 2011-11-18 at 15:35 -0500, Dave Jones wrote: > 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) I'll do some digging at the distro specific side of things. It's odd because I've got a couple of netbooks and embedded systems with *less* memory than 1GB that run depmod just fine. There were some memory leaks in older versions that should not be a problem any more. Jon. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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