Jitter and phase noise are closely related. Here the units are a bit weird, but we're talking about accumulated noise. Systems seek to reach 0. This really m

Jitter and phase noise are closely related. Here the units are a bit weird, but we're talking about accumulated noise. Systems seek to reach 0. This really means "no variability in performance", not just "tasks start at the right time". Performance noise is the correct term for what's measured. See e.g. https://www.researchgate.net/publication/353781546_Influence_of_Noisy_Environments_on_Behavior_of_HPC_Applications https://www.researchgate.net/publication/353781546_Influence... for a discussion.