Well, it’s the first time I’ve looked at a sample from a Qt app, so I don’t really know what’s typical, but I do see that the app is running with several threads and more than one is sitting in a function named qt_safe_poll(). I wonder if there could be some kind of thread deadlock issue, or resource contention, or something like that, and it times out eventually and recovers, only to have the same thing happen again a little later. I’m not sure why that would lock up the whole machine, but if calls to the kernel were involved in the deadlock/contention, maybe that would lock up the kernel as well until the problem resolves? I don’t know. But I’d definitely give the sample to the Qt folks, if you’ve logged a bug. Good luck.
Cheers, -B. > On Apr 6, 2020, at 3:44 PM, David M. Cotter <d...@kjams.com> wrote: > > i've created a sample, but i've no idea how to read it > there were two instances of the hang during the 30 second sample, but i don't > know if the sample shows that? > > <sample.txt.zip> > >> On Apr 6, 2020, at 10:29 AM, Ben Haller <bhal...@mac.com> wrote: >> >> Normally one can sample a process to see what it’s doing > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > https://lists.qt-project.org/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
