[SR-Users] Kamailio consuming UDP packets very slowly leading to high RECV - Q

[sagar malam]

Hello,

I am using Kamailio as a SIP proxy.So it receives SIP packet from internet
and forwards it to FS servers in local network.When i execute "ss" command
i see very high value in RECV-Q column.I THINK IT IS NOT NORMAL.PLEASE
CORRECT ME IF I AM WRONG.
====================================================
[root at fep-1 proc]#  ss -u -a -n -e | grep 5060
UNCONN     0      0      10.50.8.1:5060                     *:*
       ino:6831630 sk:fd <->
UNCONN     0      0      10.50.7.18:5060                     *:*
       ino:6831629 sk:fe <->
UNCONN     *1183104* 0      10.50.7.254:5060                     *:*
           ino:6831627 sk:ff <->
UNCONN     *84864*  0       2607:f900:1:3::254:5060
:::*                   ino:6831628 sk:100 v6only:1 <->
======================================================

Initially i thought that there is something in script which must be causing
kamailio to process UDP request slower but i faced same issue with a very
simple script where i simply reply with stateless 200 OK for each sip
request :
request_route {

                sl_send_reply("200","OK");exit;
        $avp(uuid) = $rm + "-" + $ci;

........
.........
.........
.......

Server configuration :
OS : CENTOS 7
Kernel : 4.16
CPU : 5 X Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
RAM : 32 GB

Please help me debugging this issue.Thanks in advance
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