Re: [undertow-dev] Too many open files: Exception accepting request, closing server channel TCP server (NIO)

I agree that it's a load-balancing issue but we can't do much about it at this moment. I still see issues after using the latest XNIO (3.7.7) with Undertow. what I have observed it that when there is a spike in request and CONNECTION_HIGH_WATER is reached, the server stops accepting new connection as expected and the client starts to close the connection because of delay (we have strict low latency requirement < 100ms) and try to create new connection again (which will also not be accepted) but server has not closed those connections (NO_REQUEST_TIMEOUT = 6000) and there will be high number of CLOSE_WAIT connections at this moment. The server is considering CLOSE_WAIT + ESTABLISHED for CONNECTION_HIGH_WATER (my understanding). Is there a way that I can close all CLOSE_WAIT connection at this moment so that connection counts drop under CONNECTION_HIGH_WATER and we start responding to newly established connections? or any other suggestions? I have tried removing CONNECTION_HIGH_WATER and relying on the FD limit but that didn't work. On Sun, Mar 1, 2020 at 7:47 AM Stan Rosenberg <stan.rosenberg(a)gmail.com&gt; wrote: -- Nishant Kumar Bangalore, India Mob: +91 80088 42030 Email: nishantkumar35(a)gmail.com