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redhat-documentation / modular-docs

Modular Documentation Project provides guidelines and examples for writing technical documentation using a modular framework.
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Issue119 Concept-module rules are too strict #150

Closed emmurphy1 closed 2 years ago

emmurphy1 commented 3 years ago

See Issue 119 for the discussion.

yzimmerm commented 3 years ago

= Latency improvement by minimizing memory swapping

[role="_abstract"] Swapping pages to disk can introduce latency in any environment. To ensure low latency, ensure that you have enough memory in your systems, so that swapping is not necessary. Always size the physical RAM as appropriate for your application and system.

Use the [command]vmstat command to monitor memory usage and watch the [parameter]si (swap in) and [parameter]so (swap out) fields. It is optimal that they remain zero as much as possible.

[literal,subs="+quotes,verbatim"]

$ vmstat procs -----------memory---------- ---swap--- -----io---- --system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 9 0 4186588 517872 28 4366932 0 1 4 207 0 1 9 3 88 0 0