chrome_page_load_resource_hotspots
Read-onlyIdempotent
Ranks URL-bearing resource slices within a page-load window, returning timing, overlap percentage, and process details. Use after a resource summary to identify the specific slices causing slow URLs.
Instructions
Rank URL-bearing Chrome resource/request slices in a page-load/raw window. Returns slice timing, overlap_ms/pct_of_window, process/thread, URL. Use after chrome_page_load_resource_summary to drill into the concrete Renderer/NetworkService/async slice behind a slow URL. Filters: page_load_id/navigation_id/phase, raw start/end ns, min_dur_ms default 50, limit, max_string_len.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| end_ts_ns | No | Optional raw trace timestamp upper bound in nanoseconds, exclusive. This uses the same unit as the returned `ts` column. ANDs with any page-load window. | |
| limit | No | Optional max rows to return. Defaults to 100 and is capped at 5000. Must be > 0 when set. | |
| max_string_len | No | Optional per-string-cell character cap applied to returned rows only. Unset preserves full strings for precision; accepts both numbers and numeric strings. Must be > 0 when set. | |
| min_dur_ms | No | Optional minimum resource-like slice duration in milliseconds. Defaults to 50 ms. Pass 0 to see all matching resource slices. | |
| navigation_id | No | Optional Chrome navigation id used to scope resources to one navigation phase. Matches `chrome_page_loads.navigation_id`. Mutually exclusive with `page_load_id`. If set without `phase`, defaults to `navigation_to_fcp`. | |
| page_load_id | No | Optional page-load id used to scope resources to one navigation phase. Matches `chrome_page_loads.id`. Mutually exclusive with `navigation_id`. If set without `phase`, defaults to `navigation_to_fcp`. | |
| phase | No | Optional page-load phase window. If set without `page_load_id` or `navigation_id`, uses the latest page load in the trace. Values: navigation_to_fcp, navigation_to_load, dcl_to_fcp, fcp_to_load. | |
| start_ts_ns | No | Optional raw trace timestamp lower bound in nanoseconds. This uses the same unit as the returned `ts` column. ANDs with any page-load window. |