I agree that the memory graph on the dashboard should take into account buffers/cache. We are running a VPS at the moment where the graph shows 95% of our memory is used. In reality, only 500mb out of 8gb is used, and the rest is being used for disc cache and will be freed up as and when when applications need it. See http://www.linuxatemyram.com/ for further explanation.
I agree that the memory graph on the dashboard should take into account buffers/cache. We are running a VPS at the moment where the graph shows 95% of our memory is used. In reality, only 500mb out of 8gb is used, and the rest is being used for disc cache and will be freed up as and when when applications need it. See http://www.linuxatemyram.com/ for further explanation.