System Status Graphs
The "Media CPU Usage" field shows you the usage of the CPU over the last 24 hours. The graph shows the ratio between waiting and processing of the media thread of the PBX. This number is a good indication how well the CPU was able to keep the real-time requirements for processing media. The blue line shows the CPU load when new calls are being rejected because of performance problems. The yellow line shows you where the log is currently writing into the graph. The green fields show you the average load (averaged over a period of six minutes), and the blue lines above the green fields show you the peak usage of the CPU (averaged over a period of three seconds).