No, there's not an easy way to see that. The /proc info, lsof, ss, etc, don't show the current listenq depth. However, there are pretty robust pieces of software that are able to determine when to spin up more theads/instances/processes without using that information. Most of them use the "I'm out of spare workers...they are all busy" condition as the trigger to add more resources..not "work is piling up at the front door" event, which is what the current listenq depth is.

In reply to Re^3: How to count the number of pending clients in socket queue? by kschwab
in thread How to count the number of pending clients in socket queue? by mrbark

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