[Ovmsdev] Frequent Crashes

Michael Balzer dexter at expeedo.de
Wed Aug 12 19:10:43 HKT 2020


The script has now been running on my ticker.1 for nearly 4 hours
without any issues.

Some other reports included a poor Wifi signal. Does that apply to your
situation as well? I can't easily reproduce that on my bench.

Regards,
Michael


Am 12.08.20 um 09:18 schrieb Michael Balzer:
> Derek,
>
> what do you mean by "match the crash timings"? Did you see the crash
> happen at the GC run? If you checked your file log, be aware the log
> may be cut off by the crash. The WDT reboot isn't polite to our
> logging task or unflushed file buffers.
>
> If there's a bug in the DukTape GC, that could well block further JS
> processing and thus trigger the WDT. The last GC bugs fixed in DukTape
> have been in release 2.1.0 (2017-04-15): https://duktape.org/download.html
>
> Your test script doesn't allocate much memory, and as it was bound to
> the system.wifi.sta.disconnected event should have run at most 6 times
> per minute -- not much stress for the GC… I'll bind your test script
> to ticker.1 on my bench module.
>
> Regards,
> Michael
>
>
> Am 12.08.20 um 08:52 schrieb Derek Caudwell:
>> Hi Michael,
>>
>> The following is the content of my "dummy" script, so it shouldn't
>> cause any looping issues:
>>  var history = {
>>   "test": [],
>>   "v.p.odometer": [],
>>   "v.p.altitude": [],
>>   "v.b.energy.used": [],
>>   "v.b.energy.recd": [],
>> };
>> var lastOdo = 0;
>> var saveOdo = 0;
>>
>> print(Duktape.enc('jc', history));
>>
>> I deleted the script and folder before seeing your suggestion on task
>> priority, but I could reinstate and try at some point.
>>
>> Since deleting the script and the events folder the module has been
>> stable for over 10 hours. I see there is garbage collection every 60s
>> which seems to match the crash timings to within a second or so,
>> could this be the cause??
>>
>> Kind regards
>> Derek
>>
>> _______________________________________________
>> OvmsDev mailing list
>> OvmsDev at lists.openvehicles.com
>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
> -- 
> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>
> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.openvehicles.com
> http://lists.openvehicles.com/mailman/listinfo/ovmsdev

-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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