System performance-compliance levels
Configurable system performance-compliance levels (PCLs) offer you a way to evaluate the performance and availability of your web application from the end users' perspective.
PCLs use the summary data to determine whether the overall traffic performed well or not. You cannot use them to determine whether a specific instance of a page had acceptable performance or not. More importantly, you can change the PCL values and your graphs of historical data will look different.
For each of the following metrics and attributes, you can set thresholds to characterize the experience that end users have with your web application as satisfied, tolerating, or frustrated. When performance is below the tolerating value, the system characterizes end users as frustrated. When performance exceeds the tolerating value, the system characterizes end users as satisfied.
Metrics and attributes to apply the PCLs to
Metric or attribute | Description |
|---|---|
End-to-end time | End-to-end latency of the entire object or page, including HTTP redirects, in milliseconds |
Host latency | Time server took to process the object or page, in milliseconds |
Network latency | Time network took to transmit the object or page, in milliseconds |
Page-render time | Time to render all the content on a page, measured in milliseconds |
Redirect latency | Time spent redirecting the client to get to this page, in milliseconds |
SSL latency | Time the web browser and the web server took to negotiate SSL encryption for this object or page, in milliseconds (not applicable if the page was not encrypted) |
TCP average latency | Average Transmission Control Protocol (TCP) time between the client and the server as observed throughout this request or page, in milliseconds |
Throughput | Effective throughput of the object or page request, in bits per second. It might be blank if the request was too small to accurately measure throughput |
Percentage of aborts | Percentage of requests that have been aborted |
Percentage of errors | Percentage of requests with errors |
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