Abstract: An apparatus includes a data collection module configured to receive a first observation value for a first variable. The first observation value is associated with a performance parameter of a processing system and with a time period. The data collection module is further configured to receive a set of second observations values for a second variable. The set of second observation values is associated with the processing of a set of tasks by the processing system. The compute module is further configured to estimate a contribution, to the first observation value, of a second observation value of the set of second observation values associated with tasks executing during the time period. The estimating the contribution includes computing an estimated error associated with the contribution. The apparatus further includes a interface module configured to transmit an indication of the contribution and an indication of the estimated error to a user interface.

Abstract: A system includes a set of detection devices coupled to a host device in a network. Each detection device includes a database configured to store an observation value for a variable, the observation value associated with operation of the host device at a time. Each detection device also includes a processor configured to analyze the observation value based on a criterion to generate an outcome. The criterion is associated with a criterion value, and the criterion value associated with that detection device is different than a criterion value associated with each remaining detection device. The system also includes a group device that includes a processor configured to receive a set of outcomes from the set of detection devices, and to compute an indication of a state of the host device as operating with or without fault based on the set of outcomes.

Abstract: In some embodiments, a method includes receiving, at a data collection module implemented in at least one of a memory or a processing device, from a processing system, an observation value for a variable. The observation value of the variable is associated with operation of the processing system at a time. The method further includes computing a deviation value of the variable from a baseline value at the time based on the observation value. The method further includes computing a stableness value of the variable at the time based on the baseline value and a variance of the variable during a time period including the time. The method further includes transmitting an indication of the processing system as operating with a fault in response to the deviation value meeting a first criterion and the stableness value meeting a second criterion.