On Tue, 25 Jan 2011 08:49:57 +0100
Sven Joachim <svenj...@gmx.de> wrote:

> On 2011-01-25 02:50 +0100, Celejar wrote:
> 
> > On Mon, 24 Jan 2011 17:41:07 -0600
> > "Boyd Stephen Smith Jr." <b...@iguanasuicide.net> wrote:
> >
> > ...
> >
> >> tmpfs doesn't reserve much (if any) memory.  So, unless it is being 
> >> actively 
> >> used by files in the tmpfs, it can be used by other applications.
> >
> > I'm somewhat confused about this.  My system has 2GB of RAM, and I have:
> >
> > $ uptime
> >  20:46:09 up 5 days,  5:30,  9 users,  load average: 0.06, 0.09, 0.25
> >
> > $ free
> >              total       used       free     shared    buffers     cached
> > Mem:       2065172    1047312    1017860          0      66064     357512
> > -/+ buffers/cache:     623736    1441436
> > Swap:      1949688     102364    1847324
> >
> > $ df | grep tmp
> > tmpfs                  1032584        16   1032568   1% /lib/init/rw
> > tmpfs                  1032584         0   1032584   0% /dev/shm
> > none                   1032584      2440   1030144   1% /tmp
> >
> > So my /tmp is using 1GB.
> 
> No, because more than 99% of the space on /tmp are free.

But if that memory isn't actually reserved for the tmpfs filesystem, and
is actually available for other uses (until /tmp fills up), than
shouldn't that memory either be reported as 'free' by free, or used for
disk caching, etc., and therefore be reported as 'used'?

Celejar
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