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Distributed systems are complex to develop and administer, and performance problem diagnosis is particularly challenging. When performance degrades, the problem might be in any of the system's many components or could be a result of poor interactions among them. Recent research e orts have created tools that automatically localize the problem to a small number of potential culprits, but e ective visualizations are needed to help developers understand and explore their results. is paper comparesdoi:10.1109/tvcg.2013.233 pmid:24051813 fatcat:euccs3ezg5ayrbxpl7oo3ng54y