Re: putting "/tmp" to memory help
On Tue, 25 Jan 2011 08:49:57 +0100
Sven Joachim <svenjoac@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." <bss@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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