Use RAM in Kerrighed (tmpfs)

1. Introduction

Because Kerrighed can merge all client RAM (like shared memory architecture). So we can use partial RAM to be fast disk. We use tmpfs to accomplish.

2. Check our RAM size

$ top

2. Use RAM in Kerrighed

$ mount -t /dev/shm /home/ram -o size=7g
$ dd if=/dev/zero of=/home/ram/tmp_3g.img   bs=1m count=3000
$ dd if=/dev/zero of=/home/ram/tmp_3g.img2  bs=1m count=3000

2. Check RAM status

$ df -h

$ mount | grep /home/ram