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Brendan's blog » The USE Method: Linux Performance Checklist
The USE Method provides a strategy for performing a complete check of system health, identifying common bottlenecks and errors. For each system resource, metrics for utilization, saturation and errors are identified and checked. Any issues discovered are then investigated using further strategies.

In this post, I’ll provide an example of a USE-based metric list for Linux operating systems (eg, Ubuntu, CentOS, Fedora). This is primarily intended for system administrators of the physical systems, who are using command line tools. Some of these metrics can be found in remote monitoring tools.
monitoring  performance  sysadmin  tips  blog  post  BrendanGregg  tool  tools  linux  optimization  list  catalog  utilization  saturation 
march 2013 by rafaeldff

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