[Bug 55786] New: user32:msg - test_timers() sometimes gets a shorter timeout than expected in Wine

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55786

Bug ID: 55786
           Summary: user32:msg - test_timers() sometimes gets a shorter
                    timeout than expected in Wine
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

user32:msg - test_timers() sometimes gets a shorter timeout than expected in
Wine:

11622: Test failed: did not get expected count for minimum timeout (90 !=
~100).

See https://test.winehq.org/data/patterns.html#user32:msg

This first happened on 2023-07-14 (no instance in the previous 5 months) and
has happened about 8 times per month since.
It does not happen on any of the TestBot VMs however. So far it only happened
on the GitLab CI (impacting 12 MRs), on Remi's macOS machines and once on my
fg-deb64 desktop.

Here are the October instance:
* 2023-10-04 linux_gitlab-debian-64
* 2023-10-06 mac_rbernon-macos-opengl-win64_1
* 2023-10-10 mac_rbernon-macos-opengl-wow64
* 2023-10-10 MR!4024, MR!4042
* 2023-10-11 MR!4064, MR!4075
* 2023-10-12 MR!4071

The lowest value in the failure messages (including the MRs) is 86 (2023-07-14
mac_rbernon-macos-opengl-win64_2). All other values are either 89 or 90. So
TIMER_COUNT_TOLERANCE = 10 was not far off, but maybe something around 15.6
would be more accurate.

That said this test is old (2013-2019) so it is strange that it only started
failing last July.