Abstract: According to embodiments of the invention, systems and methods are provided for determining optimal network connection paths for devices attempting to join a given network. The systems and methods generally employ sending testing and real data between network hubs and devices in order to gauge transmission and response speeds. The response time between the devices (i.e. a mobile device and a wireless router) is measured and used in determining expected bandwidth speeds to be experienced during the duration of the device's connection to the network. The methods and systems may be employed on networks having a plurality of routers in order to determine which router should be employed by a device requesting to join the overarching local network.

Abstract: The disclosed embodiments relate to a system for detecting abnormalities in time-series performance data obtained from machines that implement an online professional network. During operation, the system receives the time-series data, including throughput measurements and/or latency measurements for requests made to back-end systems associated with the online professional network. Next, the system attempts to detect abnormalities in the time-series data. If such an abnormality is detected, the system looks up associated system metrics, which are temporally proximate to the abnormality. The system then generates a notification about the abnormality along with the associated system metrics to facilitate determining a root cause of the abnormality.