Knowledge Base

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CloudTest provides four default “performance intelligence” dashboards--Combined Charts, Correlated Charts, Monitoring Combined Charts, and Monitoring Correlated Charts. These are located in the Performance Intelligence folder located at:  /System Objects/Dashboards/Performance Intelligence These dashboards increase performance intelligence by helping you identify common testing issues—such as the “classic bottleneck.” For example, within a classic bottleneck, as Virtual Users go up the message Send Rate to the target web site also goes up. Eventually, this flattens out, as response times back up and more queues (on the test site) are filled. This leads to increased errors (connection timeouts and resets) because the queue is too full and things are falling off of it. On a chart, this looks rather like a hose that is kinked.
Combined Charts Dashboard Five combined charts are presented in this dashboard, which bring together four critical metrics to demonstrate how user load and the overall data exchange between client and server bottlenecks at a given level. Your customers (Virtual Users), their messages (Send Rate), and data by volume (Bytes Sent and Received) as messages/responses, can expose scaling issues when compared to one another and contrasted with Error Count.
Send Rate vs. Virtual Users At the top of the dashboard, Send Rate vs. Virtual Users compares the rate at which users and messages in a test increase or decrease. Mouse over to get statistics along the timeline for either metric. Use the Legend to toggle each chart series on or off.
Virtual Users vs. Error Count As the number of users spikes and then plateaus on the Virtual Users vs. Error Count chart below, the error count reaches an unacceptable level.
Virtual Users vs. Bytes Sent and Received User data and the corresponding server responses are charted in the Virtual Users vs. Bytes Sent and Received chart below.
Error Count vs. Send Rate While the Send Rate in the Error Count vs. Send Rate chart below gradually rises, the Error Count increases over time at a greater rate.
Correlated Charts Dashboard Correlated charts share a common time x-axis that permits the dragged target to be plotted over the drop target. The Correlated Charts dashboard presents three such charts using the same four metrics as in the Combined Charts dashboard: Send Rate over Virtual Users, Bytes Sent and Received over Virtual Users, and Error Count over Virtual Users.
Send Rate over Virtual Users This chart shows the distribution of send rate rising as virtual users also increase.
Bytes Sent and Received over Virtual Users This chart shows the distribution of bytes sent as virtual users also increase.
Error Count over Virtual Users This chart shows the distribution of the error count as virtual users increase.
Monitoring Combined Charts Dashboard This dashboard brings together classic resource monitoring (CPU, IO Kbytes Read/Written, etc.) of hosts and target servers with load-related metrics such as Virtual Users and Send Rate to demonstrate the relationship of front- and back-end metrics.
Monitoring Correlated Charts Dashboard This dashboard brings together classic resource monitoring (CPU, IO Kbytes Read/Written) of hosts and target servers correlated with Virtual Users.
Event and Status Logs Dashboard This new dashboard provides easy access to crucial composition-status and event information with the ability scroll the entire Event Log into view, which improves readability for longer logs.