https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/Win32-FindFirstFIle-API-Vs-quot-File-List-Directory-Iter-quot-API-Speed-And/m-p/145222#M2786 <P>I am trying to iterate over 7 Mode and C-DoT Files, Folders And Attributes In All Volumes. I see that all discussions in the community refer to using "file-list-directory-iter" API. I wonder what would be performance difference if I just used the Win32 API "FindFirstFile" since NetApp already supports this win32 function via CIFS shares.&nbsp;</P> <P>&nbsp;</P> <P>Note that I am trying to write a high performance Directory Walker , using "FindFirstFile" and "FindNextFile" I can assign found directories I found to other threads while continue iterating other files. multithreading will boost the scanning performance. can I achieve multithreading using the ONTAP API ?</P> <P>&nbsp;</P> <P>So Two questions :</P> <P>1- "FindFirstFile" vs "file-list-directory-iter' which one is better in performance in general ?</P> <P>2- can I multithread the "file-list-directory-iter' ?</P> <P>&nbsp;</P> <P>&nbsp;</P> Wed, 04 Jun 2025 13:03:18 GMT malidiab 2025-06-04T13:03:18Z https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/Win32-FindFirstFIle-API-Vs-quot-File-List-Directory-Iter-quot-API-Speed-And/m-p/145222#M2786 <P>I am trying to iterate over 7 Mode and C-DoT Files, Folders And Attributes In All Volumes. I see that all discussions in the community refer to using "file-list-directory-iter" API. I wonder what would be performance difference if I just used the Win32 API "FindFirstFile" since NetApp already supports this win32 function via CIFS shares.&nbsp;</P> <P>&nbsp;</P> <P>Note that I am trying to write a high performance Directory Walker , using "FindFirstFile" and "FindNextFile" I can assign found directories I found to other threads while continue iterating other files. multithreading will boost the scanning performance. can I achieve multithreading using the ONTAP API ?</P> <P>&nbsp;</P> <P>So Two questions :</P> <P>1- "FindFirstFile" vs "file-list-directory-iter' which one is better in performance in general ?</P> <P>2- can I multithread the "file-list-directory-iter' ?</P> <P>&nbsp;</P> <P>&nbsp;</P> Wed, 04 Jun 2025 13:03:18 GMT https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/Win32-FindFirstFIle-API-Vs-quot-File-List-Directory-Iter-quot-API-Speed-And/m-p/145222#M2786 malidiab 2025-06-04T13:03:18Z