1. A method for monitoring application performance in a networked device, the method comprising: collecting performance data using at least one kernel space driver interface, the collected performance data corresponding to at least one application running on the networked device; generating a plurality of kernel level metrics and/or a plurality of user level metrics based on the collected performance data; generating, after generating the plurality of kernel level metrics, an event incorporating at least one of the plurality of kernel level metrics and at least one of the plurality of user level metrics; and aggregating ones of the plurality of kernel level metrics and/or ones of the plurality of user level metrics that were generated during a predefined time interval, wherein said collecting performance data, generating a plurality of kernel level metrics and/or a plurality of user level metrics, and generating an event comprise operations performed using at least one programmed computer processor circuit, wherein the predefined time interval is in a range from about 1 second to about 60 seconds; and wherein collecting performance data comprises: collecting a first portion of performance data from an operating system internal kernel interface that provides an interface between a network protocol and a network protocol client; and collecting a second portion of performance data from an application oriented system call interface to a transport network stack.