wiki:krg_tmpfs

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 a fast disk. In this article, we utilize tmpfs to accomplish it.


2. Check our RAM size

$ top
Each node has 2G, we have 7 nodes. Total RAM size is 14G.


2. Use RAM in Kerrighed

We use 7g RAM to be a disk.

$ mount tmpfs /home/ram -t tmpfs -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


3. Check RAM status

$ df -h

$ mount | grep /home/ram



Last modified 17 years ago Last modified on Apr 2, 2008, 2:27:10 PM

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