Page Fault in AsArLog Library

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1

In a quite large project with mappView I get a page fault in the AsArLog library every time I open a watch window with large struture-PVs in it.

{0AE84146-9582-46FB-8785-3FB229E6E3F8}
{0AE84146-9582-46FB-8785-3FB229E6E3F8}1908×421 27.7 KB

Is this effect known? Whats the story and even more important what is the solution to prevent this?

2

Hi @Michael_Hahni,
this is an issue that must be handled by official support. From a Community point of view, we can only give you general ideas:

  • Check for errors and warnings in the logger before the exception; maybe it will help you figure out exactly where this error is triggered. If the problem is reproducible, a profiler can help as well.
  • You have not mentioned what AS/AR is used, but it’s always worth trying the newest version.
  • Are you using the AsArLog library in your project? If so, disable the task with the implementation of this library. Maybe it’s a user application bug.

if this does not help you, all this information should be provided to official support, they can help you to analyze.

Jaroslav

3

That issue known and will be fixed in the future with the next major version of Automation Runtime.
Afaik there is some buffer overflow happening.

For my project the one causing this issue is the LogArchInfo FUB

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4

Thanks guys for the quick response.
At the moment we are using AR E4.92 on an APC3100. In the meantime I will check für the usage of the LogArchInfo FUB.