Abstract: A method of profiling code executed within a monitored tier of a multi-tier computing system includes the steps of periodically sampling the code executed by processing enclaves of the monitored tier, determining in real-time the periodical sampling overhead, dynamically adjusting the periodical sampling rate, identifying the business context of each code sample, and merging request traffic data and profiling data for presenting to an operator of the multi-tier system.

Abstract: A method of profiling code executed within a monitored tier of a multi-tier computing system includes the steps of periodically sampling the code executed by processing enclaves of the monitored tier, determining in real-time the periodical sampling overhead, dynamically adjusting the periodical sampling rate, identifying the business context of each code sample, and merging request traffic data and profiling data for presenting to an operator of the multi-tier system.

Abstract: The invention relates to monitoring a selected tier in a multi-tier computing environment with an apparatus that includes a context agent and a dynamic tier extension. The context agent is associated with the selected tier and is coupled with other context agents, each of which is associated with a respective tier. The dynamic tier extension is coupled with the context agent and with specific predetermined points of the selected tier. The dynamic tier extension monitors request traffic passing through the selected tier.

Abstract: Apparatus for monitoring a selected tier in a multi-tier computing environment, the apparatus including a context agent and a dynamic tier extension, the context agent associated with the selected tier and coupled with other context agents, each of which is associated with a respective tier, the dynamic tier extension coupled with the context agent and with specific predetermined points of the selected tier, the dynamic tier extension monitoring request traffic passing through the selected tier, the monitored request traffic including at least one entering request received at a request entry port from an adjacent tier, the dynamic tier extension identifying each request in the monitored request traffic and sending at least a request identifier to the context agent, the context agent also receiving information relating to the request context of the entering request from the context agent associated with the adjacent tier, the context agent associating the information relating to the request context of the ente

Abstract: Apparatus for monitoring a selected tier in a multi-tier computing environment, the apparatus including a context agent and a dynamic tier extension, the context agent associated with the selected tier and coupled with other context agents, each of which is associated with a respective tier, the dynamic tier extension coupled with the context agent and with specific predetermined points of the selected tier, the dynamic tier extension monitoring request traffic passing through the selected tier, the monitored request traffic including at least one entering request received at a request entry port from an adjacent tier, the dynamic tier extension identifying each request in the monitored request traffic and sending at least a request identifier to the context agent, the context agent also receiving information relating to the request context of the entering request from the context agent associated with the adjacent tier, the context agent associating the information relating to the request context of the ente

Abstract: Apparatus for monitoring a selected tier in a multi-tier computing environment, the apparatus including a context agent and a dynamic tier extension, the context agent associated with the selected tier and coupled with other context agents, each of which is associated with a respective tier, the dynamic tier extension coupled with the context agent and with specific predetermined points of the selected tier, the dynamic tier extension monitoring request traffic passing through the selected tier, the monitored request traffic including at least one entering request received at a request entry port from an adjacent tier, the dynamic tier extension identifying each request in the monitored request traffic and sending at least a request identifier to the context agent, the context agent also receiving information relating to the request context of the entering request from the context agent associated with the adjacent tier, the context agent associating the information relating to the request context of the ente