Monitoring

Introduction

• The closest the Online software gets to the Dataflow.
• Consists of three components: monitoring provider (factory?), monitoring server (buffer manager), monitoring client.
• The provider is typically part of the dataflow system, eg the ROS or event filter. This can be asked to provide events according to some selection criteria on a statistical basis. All events can be requested, though this will impact on the experiments deadtime so is only intended for test purposes (eg calibration).
• The client is a user monitoring program wanting to analyse events from some part of the system.
• The server acts as a buffer between the user monitoring programs and the performance critical dataflow applications.