> For the complete documentation index, see [llms.txt](https://docs.loci-dev.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.loci-dev.net/loci-inspector/response-time-with-collees.md).

# Response Time (with collees)

This metric surfaces the functions contributing the most to total runtime by including both their self-time and the time spent in callees. This view provides insight into which functions represent major performance bottlenecks in the system, even if the time is distributed across a large call tree. It leverages segment-level timing predictions and call graph traversal to compute the full execution cost of each function.

<figure><img src="https://449949240-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FS2ZTr9umTUpVzGSJHbuR%2Fuploads%2FIJPuIQ5fm7eyKGDXztTz%2Fimage.png?alt=media&amp;token=572fd03e-d9f2-4314-93ef-b912ee9448a2" alt=""><figcaption><p>Execution Metrics: Worst-Case Response Time</p></figcaption></figure>