Arch Linux

TheSaint

Member

From: my computer

Registered: 2007-08-19

Posts: 1,536

[Solved] tmpfs lost half of its real space

Hello,

My RAM is 16 Gb, but the system sees only half of that

$ df -H /tmp/
Filesystem      Size  Used Avail Use% Mounted on
tmpfs           8.4G   16M  8.4G   1% /tmp
$ free -h total
              total        used        free      shared  buff/cache   available
Mem:            15G        1.3G        2.0G         47M         12G         13G
Swap:            0B          0B          0B

Even copying files bigger than 8.5 Gb it will complain disk full
Maybe I'm misunderstanding how the memory is managed

Last edited by TheSaint (2015-05-12 02:43:57)

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do it good first, it will be faster than do it twice the saint

falconindy

Developer

From: New York, USA

Registered: 2009-10-22

Posts: 4,111

Website

Re: [Solved] tmpfs lost half of its real space

tmpfs uses half your ram by default. If you want it larger or smaller than that, provide the size parameter when you mount it.

Semi-related: ramfs != tmpfs

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blog | ±github

TheSaint

Member

From: my computer

Registered: 2007-08-19

Posts: 1,536

Re: [Solved] tmpfs lost half of its real space

Semi-related: ramfs != tmpfs

I corrected the title

$ df -H /tmp/
Filesystem      Size  Used Avail Use% Mounted on
tmpfs            13G  4.2G  8.5G  34% /tmp

$ cat /etc/fstab
#
# /etc/fstab: static file system information
#
# <file system> <dir>   <type>  <options>       <dump>  <pass>
LABEL=Linux64   /               ext4    defaults                1       2
tmpfs           /tmp            tmpfs   nodev,nosuid,size=75%   0       0

Last edited by TheSaint (2015-05-12 02:45:39)

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do it good first, it will be faster than do it twice the saint