# How to create a ramdisk? - Linux
Data Science for Political and Social Phenomena
Author: Guillaume Redoulès

# How to create a ramdisk?

## Writing to a SSD

Let's first write 500Mo to a ssd with the command :

    dd if=/dev/zero of=test.iso bs=1M count=500

On my machine with a ssd I get the following results

    500+0 records in
    500+0 records out
    524288000 bytes (524 MB, 500 MiB) copied, 10,153 s, 51,6 MB/s

## Writing to a ramdisk

Let's now create a temporary ram disk and see how faster it is

    mkdir /mnt/ram
    mount -t tmpfs tmpfs /mnt/ram -o size=600M
    cd /mnt/ram
    dd if=/dev/zero of=test.iso bs=1M count=500

The results yield a faster write time :

    500+0 records in
    500+0 records out
    524288000 bytes (524 MB, 500 MiB) copied, 6,39849 s, 81,9 MB/s

on a machine with linux installed natively the results shoud be even faster.

### Find an error or bug? Have a suggestion?

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