Attached a specific number of cores for WinCC OA

[eMichx]

Hello,

I would like to know if it's possible to limit the number of cores (CPU) used by WinCC OA?

regards
Emmanuel

[leoknipp]

Hello,

which process is running on which core is part of the operating system. If a limitation is possible in the configuration of the operating system you have to clarify with your system administration.
A single WinCC OA process can only use one core.

Why shall the number of cores used by WinCC OA be limited?

Best Regards
Leopold Knipp
Senior Support Specialist

[eMichx]

Hello,

We would like to avoid any disturbance with another application which would be run on the same server,
that's the reason it would be interesting to separate the resources for each application.

regards
Emmanuel

[mkoller]

Maybe this helps:
http://manpages.ubuntu.com/manpages/har ... set.1.html

[eMichx]

Would be possible to do that on Windows system?

regard
Emmanuel

[mpoint]

Apparently the Windows 'start' command has an 'affinity' setting, where you can restrict on which CPUs the started process will run. See 'start /?' or here: http://www.techrepublic.com/blog/window ... ance-edge/.

But please note that WinCC OA is a multi-process system, and I don't know whether this setting is inherited to subprocesses.

EDIT: alternatively, maybe you could increase the process priority of the other application, so that it is less likely to lose CPU time to other processes.