Nginx: [error] accept4() failed Software caused connection abort

[idobudo]

I get a lot of log entries like below, when a lot of users attemmpts to login captive portal et the same time:
  nginx: 2016/12/30 12:25:00 [error] 68189#102120: accept4() failed (53: Software caused connection abort)

I tested with changing a lot of parameters like  "kern.ipc.somaxconn, net.inet.ip.intr_queue_maxlen, net.route.netisr_maxqlen, keepalive_timeout, worker_processes ,  worker_connections" but problem not solved.

When I add the line "multi_accept on;" in the events block in "/etc/inc/system.inc" file, then my problem solved.

I want to know if this "multi_accept on;" will make some wrong things to my pfsense? Will this make some bad impact? Have i done right?

My pfsense is:
Version 2.3.2-RELEASE-p1 (amd64)
built on Tue Sep 27 12:13:07 CDT 2016
FreeBSD 10.3-RELEASE-p9

[idobudo]

in sys file there is a method like below, in it I set.
That method produces nginx config file.

function system_generate_nginx_config(…)
....
events {
    worker_connections  1024;
  **  multi_accept on;**
}
….

When I set "multi_accept on;" will it cause any problem?

NOTE:
The web sites about nginx saying like below about "multi_accept on;":

• We've enabled multi_accept which causes nginx to attempt to immediately accept as many connections as it can.
• The option multi_accept makes the worker process accept all new connections instead of serving on at a time.
• If multi_accept is disabled, a worker process will accept one new connection at a time. Otherwise, a worker process will accept all new connections at a time.