The grandparent post is correct.
He noted that this had a very negative effect on the real time kernel efforts
In this sentence "had" is the verb and "effect" is the predicative (and thus noun).
He noted that this affected the real time kernel efforts negatively.
Yes, this is correct because here "affected" is the verb.
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The grandparent post is
The grandparent post is correct.
In this sentence "had" is the verb and "effect" is the predicative (and thus noun).
Yes, this is correct because here "affected" is the verb.