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[Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow
From: |
Markus Mützel |
Subject: |
[Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow |
Date: |
Mon, 4 Dec 2023 02:32:42 -0500 (EST) |
URL:
<https://savannah.gnu.org/bugs/?64975>
Summary: Octave for Windows extremely slow
Group: GNU Octave
Submitter: mmuetzel
Submitted: Mon 04 Dec 2023 08:32:39 AM CET
Category: Interpreter
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Regression
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Release: 9.0.90
Discussion Lock: Any
Operating System: Microsoft Windows
Fixed Release: None
Planned Release: None
_______________________________________________________
Follow-up Comments:
-------------------------------------------------------
Date: Mon 04 Dec 2023 08:32:39 AM CET By: Markus Mützel <mmuetzel>
Current builds of Octave for Windows are extremely slow.
Running `__run_test_suite__` used to take about 10 minutes on my hardware. It
is now taking more than 45 minutes.
That seems to be related to us switching from the (older) MSVCRT to the
(newer) UCRT in MXE Octave and an update in gnulib during the last year. (See
also: https://octave.discourse.group/t/merging-branches-for-octave-9/4978/38
)
Attaching a profiler indicates that a significant proportion of the execution
is spent in `setlocale`. Most of those backtraces are coming through
`octave::sys::fnmatch` → `octave::symbol_table::clear_function_pattern`.
Every call of `octave::sys::fnmatch` seems to lead to `setlocale` being called
6 times.
Possible options are to revert to linking with the MSVCRT, or to directly call
a similar Windows API function to do the function pattern matching.
A candidate for the latter might be `PathMatchSpecW` or `PathMatchSpecA`:
https://learn.microsoft.com/en-us/windows/win32/api/shlwapi/nf-shlwapi-pathmatchspecw
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- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow,
Markus Mützel <=
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Markus Mützel, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Markus Mützel, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Markus Mützel, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, John W. Eaton, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Nicholas Jankowski, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, John W. Eaton, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, John W. Eaton, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Philip Nienhuis, 2023/12/04
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Markus Mützel, 2023/12/05
- [Octave-bug-tracker] [bug #64975] Octave for Windows extremely slow, Philip Nienhuis, 2023/12/05