Re: Free memory, include "cached"?
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El Tue, Oct 14, 2008 at 03:03:27PM +0200 Gilles Chanteperdrix ha dit: > Gregoire Banderet wrote: > > Matthias Kaehlcke wrote: > >> El Tue, Oct 14, 2008 at 02:14:46PM +0200 Gregoire Banderet ha dit: > >> > >>> anubhav rakshit wrote: > >>>>> I have to report the amount of FreeMem on my embedded system. The rootfs > >>>>> is in RAM. I use /proc/meminfo. > >>>>> I started by doing : freemem = MemFree + Buffers + Cached > >>>>> But I realized (tell me if I'm wrong) that my rootfs filesystems is > >>>>> counted in "Cached". > >>>>> Part of the memory in "Cached" can be allocated, so I should add it as > >>>>> Free Memory, but part of it is my rootfs (i.e. really used). > >>>>> How should I compute freemem ? > >>>> Have you tried the free command. > >>> Yes. What I need is to know which part of "Cached" is used for RAMFS. > >> to know the size of your ramfs you may execute the following command: > >> > >> du -hx -d 0 / > > If you want to get the space occupied on a partition, you should use df, > not du. depends on the type of the partition. df doesn't work with initramfs, i suppose the reason is that an initramfs image has no partition size, so it doesn't make sense to report free disk space. -- Matthias Kaehlcke Embedded Linux Engineer Barcelona If liberty means anything at all, it means the right to tell people what they do not want to hear (George Orwell) .''`. using free software / Debian GNU/Linux | http://debian.org : :' : `. `'` gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `- ------------------------------------------------------------------- List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm FAQ: http://www.arm.linux.org.uk/mailinglists/faq.php Etiquette: http://www.arm.linux.org.uk/mailinglists/etiquette.php
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