[Kst] Kst Crash

Ben Lewis egretengineering at gmail.com
Wed Jan 1 14:10:01 UTC 2014


Peter,

I spoke too soon. Kst still crashes when trying to load live data files larger than about 4MB (even 
with 100ms updates). I think I must have had a good run in my initial testing because it's crashed 
quite a few times now.

Ben

On 2/01/2014 12:43 AM, Ben Lewis wrote:
> Hi Peter,
>
> I've changed my application so that it now writes to my CSV file every 100 ms (instead of every 
> 10ms). Kst has not crashed since I've made this change.
>
> Kst is configured to update every 1000 ms so I'm not sure why this makes a difference. Possibly my 
> application was not providing sufficient time for Kst to read the file between my write cycles.
>
> I'll do some more testing with larger file sizes and get back to you.
>
> Ben
>
>
> On 1/01/2014 12:01 PM, Ben Lewis wrote:
>> Hi Peter,
>>
>> When Kst crashes the log file always shows that the INDEX and Column1 vectors are read twice (see 
>> "kst crash1.png"). When the data file loads successfully Kst only reads each vector once (see 
>> "kst success1.png").
>>
>> Small files (< 100k rows, < 4MB) do not trigger this double read. My application updates the CSV 
>> data file with approximately 15 rows every 10ms.
>>
>> Ben
>>
>> On 23/12/2013 8:45 PM, Peter Kümmel wrote:
>>> Hi Ben,
>>>
>>> thanks for the video.
>>> But currently I don't have access to your test data,
>>> and I can't reproduce it with the gyro test data.
>>> I plot the graphs and change the data with help of
>>> Notepad++, but it doesn't crash. Do you have an idea
>>> how to reproduce the crash?
>>>
>>> Peter
>>>
>>>
>>> On 19.12.2013 14:34, Ben Lewis wrote:
>>>> Hi Peter,
>>>>
>>>> Here is an example of a crash. I had to repeat these same steps about 5 times to get this
>>>> to happen, so it's pretty intermittent.
>>>>
>>>> The attached screen cast can be played withVLC player
>>>> <http://www.videolan.org/vlc/index.html>.
>>>>
>>>> Please let me know if there is anything more I can do.
>>>>
>>>> Cheers, Ben
>>>>
>>>
>>
>



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