 No.11543
mahlemiut Developer
Mar 28, 2015, 23:03
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I get the same with more or less current GIT code, mostly when trying to interact with the UI, and even caused a crash in MESS' GBA driver. Performs normally with -mt disabled (as it is by default). Ubuntu 10.04 x86_64, SDL2. |
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 No.11544
cuavas Administrator
Mar 29, 2015, 02:59
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There are definitely race conditions in the current implementation of the -mt flag. It's known to cause temporary lockups, severe input lag, and other issues on both Windows and OSX. It seems to have arisen about the time couriersud fixed some of the previous crop of issues in the -mt implementation. |
 No.11547
Firewave Senior Tester
Mar 29, 2015, 16:59
edited on: Mar 29, 2015, 16:59
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I do all my testruns with -mt and I didn't reconize any stability issues. I am not having any input performed in them, so it might be related to the input system somehow. I also did some random testing with ThreadSanitizer and logged all the issues I encountered. The issues with the input hangs did not show up as a race condition, so it might be something else related to threading. A few proper examples to test with and maybe even backtraces when a crash occured would be very helpful. |
 No.11551
NekoEd Senior Tester
Mar 29, 2015, 23:42
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If your testruns are completely automated, you'll probably never notice any issues; MAME doesn't complain or say anything when the anomalies occur, so if it's being done completely automated with no output and/or no input, you won't see anything. |
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No.11554
cuavas Administrator
Mar 31, 2015, 23:16
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It's definitely a real issue. You likely won't notice it with an automated test run as the most obvious symptoms are input lag and frozen video. |
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No.12604
Osso Moderator
May 5, 2016, 09:17
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-mt functionality has been removed. |