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I run cygwin 32-bit on Windows 10 Pro b19042 [Cygwin is 3.2.0-1], with OpenSSH [8.5p1-1], using sshd to access the machine from afar, and notice (often multiple) processes of sshd.exe with 100% CPU load.

  • A call stack shown with procexp shows function names like cygwin1.dll!acl_get_perm and cygwin1.dll!_assert
  • I have updated to the latest cygwin multiple times and reboots don't help either

Can anyone give me some advice on how to proceed further?

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  • If there is a 64-bit cygwin, why not use that?
    – Gerard H. Pille
    Apr 30, 2021 at 10:44
  • If needing OpenSSH, why not just use the Microsoft port of OpenSSH (Win32-OpenSSH)?
    – JW0914
    Apr 30, 2021 at 12:39
  • Have you tested latest snapshot ? cygwin.com/snapshots
    – matzeri
    May 1, 2021 at 10:28
  • @Gerard H. Pille: It's a 32-bit system.
    – cxxl
    May 2, 2021 at 15:41
  • @JW0914: The MS port doesn't have a bash, which really makes things much more awkward.
    – cxxl
    May 2, 2021 at 15:42

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A downgrade to an earlier version of SSHD fixed the problem.

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