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A comment on Overflowing timeout. Parent comment

Re:Overflowing timeout by namibj on Thursday July 15, 2021 @08:26AM (#27843950)
Just to correct you: `clock_gettime` is handled by the vDSO, and does not involve an actual syscall for over a decade now.
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Re:Overflowing timeout by antonio2368 on Thursday July 15, 2021 @09:27AM (#27844389)
I didn't think about the vDSO, and that it's used for `clock_gettime`, so thank you for the information and correction!

It's really hard for me to get a feel of what is okay to use, what is the standard way to do something without actually implementing everything and seeing how it behaves, so information like this help me a lot.

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Re:Overflowing timeout by namibj on Thursday July 15, 2021 @05:03PM (#27850114)
I recommend looking at it, as all those calls are very cheap:

  man 7 vdso
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