Purpose

DYN-9675

This PR goal is to improve throughput of the DEP_Handler function in the Dynamo VM. DEP_Handler is a function called on the hot path of graph execution multiple time for each function call within a node (ie multiple times per replication calls). This PR attempts to improve the speed of those calls and improve the memory efficiency. Specifically:

• Remove use of LINQ FirstOrDefault usage
• Simplify unnecessary allocation of temporary variables.

The result of the PR in one test graph (with over 2million calls to DEP_Handler) reduces the time by ~.5s or 5% of graph execution as follows:

master:

PR:

For the same test graph, the memory changes are as follows:

master:

PR:

Declarations

Check these if you believe they are true

• Is documented according to the standards
• The level of testing this PR includes is appropriate
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.

Release Notes

VM Performance improvements

Reviewers

FYIs