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DSR What is the Relationship Between TCP/SCTP Socket Buffer And MP Resources? (Doc ID 2553354.1)

Last updated on MAY 25, 2023

Applies to:

Oracle Communications Diameter Signaling Router (DSR) - Version DSR 7.3.0 and later


We have been receiving inquiries to increase the Socket Send/Receive Buffer Size from default 1MB to 2MB on a number of connections.

I could not find direct relationship to the potential impact on MP performance in doing so.

It seems all MP configurable resources are finite (MP profile dependent) and have not changed between DSR5.0 and 8.1, but doesn't seem that they are derived from, or dependent on transport related parameters.

For example, if PDU Buffer pool size is fixed, I deduce that increasing the buffer size to the max (i.e. 5MB) will not allocate more PDU buffer size, unless the PDU pool already calculated based on Max socket size? It is not clear.

Bottom line is I need to understand how increasing the Socket buffer size impacts MP performance, memory, CPU and latency. Also looking to understand if increasing PAT timer is necessary and how that affects the allocated resources. Where is the relation and dependency clearly indicated?


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