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File I/O DirNotify Event Type

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Hey Community! I'm looking at WPA traces to investigate specific problem for quite a while now.

Looking at the File I/O metrics, I see that quite a high amount of time is spent in "DirNotify" events with SubType "Info Class 351". However, I have no idea what those events are and what the different SubTypes (apart from "Info Class" there's also "FileAlternateNameInformation") mean. All I see is that they take a notable amount of time and the associated process is one that I suspect is causing the perf issues we're investigating.

Does someone know what those events are and maybe has a pointer to documentation that I didn't find? What Windows API calls might those events originate from?

Thank you!



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