[Octave-bug-tracker] [bug #59706] canonicalize_file_name performance in Windows

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?59706>

                 Summary: canonicalize_file_name performance in Windows
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 17 Dec 2020 05:09:26 AM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 6.1.0
         Discussion Lock: Any
        Operating System: Microsoft Windows

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Details:

As discussed in bug #57439 a notable performance slowdown has been imposed by
canonicalize_file_name so I opened a separate thread to draw more attention to
this issue.
It appears that canonicalize_file_name results in multiple system calls some
of witch are related to the file system.

Here
https://stackoverflow.com/questions/28659344/alternative-to-realpath-to-resolve-and-in-a-path
are some implementations that do the task regardless of whether the
directories/files actually exist.




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