I have an Ubuntu Web Server (Karmic Koala v9.1) housed on a cloud server from rackspace server from here http://www.rackspacecloud.com/cloud_hosting_products/servers/pricing
. I have the lowest option and am having speed issues. I don't think the speed issues are due to memory but rather other factors. I know there are a number of things I can do myself to improve the speed from a management standpoint.
I would like to set up some kind of monitoring to make sure that we are as optimized as we can be given our current level of 256mb of RAM. What kind of monitoring tool would you guys recommend having?