How to co-relate tcpListenDrop with listen backlog parameter

lcrusader · *nix forums beginner Joined: 22 Jun 2006 Posts: 1

Hi,

I am trying to understand what the tcpListenDrop parameter is all
about. The value is tracked on a system wide basis, where as the
backlog parameter passed to a listening socket is on a single socket.
Is there a way to identify which socket might be causing the
tcpListenDrop to increase?

On the same lines, tcp_conn_req_max_q sets the maximum number of
established sockets that are waiting to be accepted by a socket. Is
this queue length set for the entire system or on a per-socket basis?
If it is a system wide parameter, then how does it affect the listen()
backlog parameter. Does increasing my tcp_conn_req_max_q value from 128
to 1024 while retaining a listen backlog of 50 help in any way?

Hopefully, someone out there knows the answer to these questions.

Thanks
Ravi

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