18 | | 0.1) Title and abstract |
| 18 | The instructions on this page are designed for the GEMINI Tutorial at GEC 15. This tutorial covers how to instrumentize a GENI slice using the GEMINI I&M system. |
| 19 | |
| 20 | The GEMINI I&M system provides an easy way to instrumentize a GENI slice with passive and active measurements. The current version of GEMINI provides host monitoring metrics (cpu, memory, network) and tools to perform on-demand and regular active measurements for throughput, one-way latency and round-trip latency (both with jitter and loss). |
| 21 | |
| 22 | Users can specify through their request RSpec which nodes should have passive instrumentation (e.g. host monitoring) and which nodes should active measurement services installed. While most passive instrumentation is always on, active measurements must be configured by the user. This is done through a web interface available on a instrumentized slice. A key service for this to work in GEMINI is UNIS: Unified Network Information Service. |
| 23 | |
| 24 | {{{ |
| 25 | UNIS and Topology-based Configuration: The Unified Network Information Service (UNIS) is the most important |
| 26 | component of the GEMINI architecture. For those familiar with perfSONAR, this service is the combination of |
| 27 | the Lookup Service and the Topology Service of the perfSONAR framework. UNIS stores the topology data of GENI |
| 28 | slices, and services register themselves so that they can be found dynamically. The configuration of the |
| 29 | active measurement services is done through annotations on the topology data. A web interface is provided to |
| 30 | configure the active measurements and push the configuration to UNIS. |
| 31 | }}} |