Number of simultaneous SLPort Processes

Solved951 viewsDataminer Processes SLPort
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hi Dojo,

The default number of SLPort processes on a DMA is five but it is possible to influence this and specify less or more simultaneous SLPort processes as described in below documentation link

https://docs.dataminer.services/user-guide/Advanced_Functionality/DataMiner_Agents/Configuring_a_DMA/Configuration_of_DataMiner_processes.html#setting-the-number-of-simultaneously-running-slport-processes

But in which situation would it be beneficial to deviate from the default?  When would it be helpful or advised to specify less or more simultaneous SLport processes?

Context: I noticed the five SLPort processes on a particular DMA are running quite high in cpu load (average about 12% each) so I am wondering if changing this setting would be beneficial for the performance in any way or not.

Thanks a lot!
Koen.

Koen Bouckhout [SLC] [DevOps Advocate] Selected answer as best 13th September 2023

1 Answer

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Hi,

SLPort is still a 32-bit process, meaning that there's a memory limit around 4GB. In case this limit is reached, there will be a crash of that process hence why it's then beneficial to have more processes when this is the expected amount of memory and not a memory leak. This could be useful in a multi threaded timer polling environment where there are a lot threads present in SLPort.

In don't think that changing the setting would be beneficial for the CPU load in this case as an element is linked to a polling thread in an SLPort process, so the CPU that this thread uses will still be the same.

Regards,

Koen Bouckhout [SLC] [DevOps Advocate] Selected answer as best 13th September 2023