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A comment on New UUID Formats. Parent comment

Re:New UUID Formats by astrange on Monday June 13, 2022 @07:19AM (#31723844)
“Running out of entropy” is not possible; that’s a property of ancient PRNGs written by confused people.

Even if your PRNG could run out of entropy, rdrand would give it all it needs.

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Re:New UUID Formats by ciupicri on Monday June 13, 2022 @08:11AM (#31724336)
From the documentation for java.security.SecureRandom from Java 17 [1]:

> Note: Depending on the implementation, the generateSeed, reseed and nextBytes methods may block as entropy is being gathered, for example, if the entropy source is /dev/random on various Unix-like operating systems.

[1]: https://docs.oracle.com/en/java/javase/17/docs/api/java.base...

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Re:New UUID Formats by astrange on Monday June 13, 2022 @03:16PM (#31730299)
Like I said, ancient PRNGs written by confused people.
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Re:New UUID Formats by yencabulator on Monday June 13, 2022 @12:32PM (#31727825)
On current day Linux, /dev/random will only block during bootup, never after it has once started.
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