This Plugin Show Total Database and Memory Usage with Memory Limits in Admin Dashboard Footer and Admin Dashboard Page
Gives network admins an easy way to see what plugins are actively used on the sites of a multisite installation
Show Overview and Memory Usage on WordPress Dashboard, Memory Load on Footer Admin Control Panel with less mem consumption! Full 3.1+ compatible.
Show Overview and memory usage on WordPress Dashboard, with less load consumption. Full compatible with WordPress 2.9.2 MU.
Indicate Memory and db Usage on Backend. Show Memory Load and db size on Footer and Max Memory Consumption on Admin Bar/ToolBar.
Monitor the space on your server with a simple dashboard widget. You can also enable a notification that gets sent when you hit a specified threshold.
This Plugin is Deprecated
Track post, page, category and homepage views. Build usage statistics, display usage graphs, top pages, posts, categories.
Apache log parser for WordPress. Monitor daily bandwidth usage. Adds a dashboard widget displaying the daily bandwidth usage graph.