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Linux performance tuning – vm.swappiness

vm.swappiness takes a value between 0 and 100 to change the balance between swapping applications and freeing cache. At 100, the kernel will always prefer to find inactive pages and swap them out
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Linux Performance analysis tools

Understand how various Linux performance monitoring tools behave when the system is heavily loaded in terms of cpu, memory and swapping to disk (IO).
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Splunk Search Tips Cheatsheet

Searching in Splunk gets really interesting if you know the most commonly used and useful command sets and tips. A handy document on splunk searches.