punctuation - Comma after e.g. list

I am unsure whether to use comma after the example list while using e.g. Any ideas?

these functions, e.g., delay, capacity, throughput, represent better...

or

these functions, e.g., delay, capacity, throughput represent better...

There are other similar questions, but I couldn't find this particular answer in either of them.

Answer

The sequence e.g., delay, capacity, throughput is an interruption to the sentence and commas both before e.g. and after throughput will make this clear to the reader. You can compensate for the additional comma by omitting the one you have inserted after e.g.