I want to read that too, can you suggest the page?Well, that was what the author wrote in the end of the Part 1 and I've sent you first the Part 2, so is the article that he mentioned, meaning that you already read it.
Dist:Delivery LatencyThat's the latency between Publisher and Subscriber. It can be interesting to have this information.
Bytes Received/SecThose are only information about how many bytes was sent and received. I don't think you can use those values to monitor the state of a mirroring.
previous we have publisher and distributor on the same box and whenever we add RAM, number of replication agent long running alert lesser.If they are in the same box of course they will never use network and as they share the same memory they can use it easily. You can't compare things just like that because they've different configurations.
so therefore more RAM.Basically, yes.
for monitor parameter like this:What does counters have to have with Replication?
2) Page life expectancy
3) Page writes/sec
4) Pages Per Second
has a thershold, then we should add more RAM ?
If not, you can check them here.