Gluster users - Oct 2017 - where is performance.cache-size

Hi guys,

Quick question about changing brick's performance.cache-size : where is 
it stored ?

1. On the gluster's client RAM
2. On the gluster's server RAM
3. Somewhere else ?

Documentation isn't very clear about it, with a simple " Size of the 
read cache" explanation :)

Any idea about it ?

Thanks !

Quentin