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Mount a temporary ram partition

Terminal - Mount a temporary ram partition
mount -t tmpfs tmpfs /mnt -o size=1024m
2009-02-06 00:33:08
User: ajrobinson
Functions: mount
Mount a temporary ram partition

Makes a partition in ram which is useful if you need a temporary working space as read/write access is fast.

Be aware that anything saved in this partition will be gone after your computer is turned off.


There is 1 alternative - vote for the best!

Terminal - Alternatives
ram() { mt=/mnt/ram && grep "$mt" < /proc/mts > /dev/null; if [ $? -eq 0 ] ; then read -p"Enter to Remove Ram Partition ";sudo umount "$mt" && echo $mt 0; else sudo mt -t tmpfs tmpfs "$mt" -o size=$(( ${1:-1} * 1024 ))m && echo $mt '-' "${1:-1}"gb; fi; }
2013-12-13 05:22:02
User: snipertyler
Functions: echo grep mt read sudo umount
Tags: sudo ram tmpfs

Creates a temporary ram partition

To use:

ram 3

to make a 3gb partition (Defaults to 1gb)

mdmfs -s 256m md /mnt
eatmydata disk_thrashing_command
2012-03-04 00:51:12
User: alphapapa

If you use eatmydata, all fsyncs will be ignored, so things will go much faster. Maybe not quite as fast as a ramdisk, but if you have enough free memory, the fs cache should help a lot. Just remember to sync afterwards--and if your system crashes in the middle of the command... :)

Know a better way?

If you can do better, submit your command here.

What others think

many systems come with a shared-memory "Device" pre-mounted. My distro (fedora) is mounted at /dev/shm.

Pretty handy when you want to borrow some ram for disk like purposes.

Comment by tsaavik 321 weeks and 2 days ago

this is really great if you run gentoo and are going to compile something - if you mount a tmpfs at /var/tmp/portage, it'll emerge while storing temp files in ram instead of on the harddrive, leading to a faster emerge that doesn't bog down your harddrive. Take note though, not everything will compile if you don't have enough ram, esp. if it's something like gcc or gtk... about 700mb should be fine (i think)

this might be of interest too:


Comment by jlin64 321 weeks and 2 days ago

No doubt this would torn out the ram while doing heavy-duty work provided if mounted under restricted places ;)

Comment by bassu 303 weeks and 1 day ago

I have a detailed (verbose) notes on tmpfs here: http://www.askapache.com/web-hosting/super-speed-secrets.html

Comment by AskApache 262 weeks and 2 days ago

the truth is... hard disks suck. they're cheap, yes, but they're slow. and they fail. if you have lots of redundancy, then maybe you can overcome these deficiencies through scale. but what about the end user masses who don't use some elaborate redundancy setup?

i've been using mfs and tmpfs instead hard disk for quite some time for both "code" and "data". i only use hard disk for stuff i need to save. after using ram exclusively for a while you begin to see just how slow and unreliable hard disks really are, and you'll unlikely want to go back to using disks.

ram is the next best thing to the cpu's registers. there are quite few registers with the new cpus... it seems like overkill... b/c most of them are going unused. but they are there for speed. ram is ridiculously slow by comparison.

Comment by argv 242 weeks and 2 days ago

For OSX (tested on 10.7.3):

diskutil eraseVolume HFS+ RAMDisk `hdid -nomount ram://$((1024*2048))`

This will be mounted at /Volumes/RAMDisk/

Comment by lowbatteries 158 weeks and 2 days ago

On FreeBSD systems you can use :

mdmfs -s 32m md /mnt

Comment by QNimbus 121 weeks and 1 day ago

I use this with mysql for the tmp folder. any file sorts are done in ram rather than on disk.

mount tmpfs /tmp/mysqltmp/ -t tmpfs -o size=15G
Comment by denni 69 weeks and 4 days ago

Your point of view

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