compute/stats-for-sysadmins.md
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# Stats For Sysadmins
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### 1/n chance tried n times
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-From https://theartofmachinery.com/2020/01/27/systems_programming_probability.html
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+From <https://theartofmachinery.com/2020/01/27/systems_programming_probability.html>
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For n>3, there's a bit less than a 2/3 chance of at least one hit.
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### n balls in n buckets
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-From https://theartofmachinery.com/2020/01/27/systems_programming_probability.html
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+From <https://theartofmachinery.com/2020/01/27/systems_programming_probability.html>
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If you throw n balls into n buckets at random, a bit over a third of the buckets will be empty, a bit over a third will have one ball, and the remaining quarter or so will have multiple balls.
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### Scale up, or scale out?
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-From http://people.brunel.ac.uk/~mastjjb/jeb/or/queue.html
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+From <http://people.brunel.ac.uk/~mastjjb/jeb/or/queue.html>
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If you only care about throughput, scale up.
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