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This Wiki page addresses some counter-intuitive properties of using very short time delays. This Wiki page assumes that timing is generated by a system timer "tick" interrupt. In Tickless Mode there is no system timer interrupt. Much of the discussion here would also apply in the Tickless mode, however, the terminology used here assumes system timer interrupts.

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The trade-off here is that when you increase the timer interrupt rate, the timer interrupt processing will then take a proportionately larger amount of your CPU bandwidth. The recommended way to get very high timer resolution without increasing the timer interrupt rate (in most use cases) is to use a Tickless Mode OS. For example, in the Tickless configuration, you could have CONFIG_USEC_PER_TICK set to 1 for a 1MHz timer resolution (with no interrupts). If your target periodic processing time is still 1Khz, then this periodic processing could be met with good precision.

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