Limitations

Summary

Object	What reaches the panel
Events OnHandleRequest, OnLoadWebDocument	Duration between open and close
Events OnMODXInit, OnWebPagePrerender	A timeline row with 0 ms
Manager events (OnDocFormSave, OnResourceDelete, and others)	The plugin is not subscribed to them
Memory and total time	Overview tab
SQL	One row with the executedQueries count and the queryTime sum. No query text
A plain [[!Snippet]] or [[$chunk]] tag	The parser wrapper is installed on OnMODXInit before getParser(). processElementTags() goes to the inner parser and does not call the wrapper processTag()
A snippet from pdoTools timings	A modSnippet load row. Time: that step's delta, and the SQL count on the row is 0
Plugins	Not collected
Recommendations and the slow_query_ms, slow_snippet_ms thresholds	Calculated in memory. Not present in the HTML

On a profiled request SQLProfiler sets cache_db to false.

Five rules run in memory. Slow SQL reads slow_query_ms. The slow snippet rule reads slow_snippet_ms and events of type snippet, which collection does not add. N+1 reads is_n1, which collection does not set. A chunk is flagged from 50 calls. Snippets are info from 5 and warning from 10. None of this is in the HTML.

pdoTools

When the pdotools service exists, collection reads its timings and looks for Loaded "modSnippet". That line is written when the object is loaded. The tag becomes {$_modx->runSnippet("name")} with the step delta as the time. That is not execution duration and not the SQL inside the snippet.

Collection does not split tpl chunks, Fenom modifiers, or a nested {$_modx->runSnippet()}.

When the pdotools service is missing, every profiled request writes pdoTools service not found to the MODX log. The request still reaches panel injection.

There is no miniShop3 integration in the package. The OnMODXInit priority of -100 is set so the plugin runs before pdoTools and MiniShop3.

What to use instead of a breakdown

Read the query count and the summed query time in the single SQL tab row. Take query text and the plan from the database log. The panel does not show SQL text or the execution time of msProducts.

pdoTools snippet cache is configured on the snippet call. Selection parameters are described in pdoTools general properties.