[sr-dev] [tracker] Task opened: kamailio can't accept new connections(tls) (Attachment added)

[sip-router]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Shaobin.Feng (saxon_leo) 

Attached to Project - sip-router
Summary - kamailio can't accept new connections(tls)
Task Type - Bug Report
Category - tcp
Status - Unconfirmed
Assigned To - 
Operating System - Linux
Severity - Critical
Priority - Normal
Reported Version - 3.2
Due in Version - Undecided
Due Date - Undecided
Details - describe  
  1,Applications Scenarios
    1.1,our customers connect kamailio SERV via TLS on mobile phones.
    1.2,our user volume ranges from 100,000 to 150,000.
    1.3,our customers's network environment are quite uncertain and uncontrolled.

  2,Problem
    2.1 For the past 6 months,kamailio SERVER runs quite well.
    2.2,recently,I add a new config "tcp_rd_buf_size = 10000" for some reason.
    2.3,The kamailio SERVER runs for about some hours,it couldn't accept new connections anymore.
    2.4,stracing one process gets many "futex(0x8049910, FUTEX_WAIT, 0, NULL <unfinished ...>" 
    2.5,gdb process in attach
     
Any advice would be nice


computer:
OS: unbuntu 12.04 64
CPU: 8 core
MEM: 16G

sysctl.conf
   net.core.somaxconn =10240
   net.ipv4.tcp_timestamps =1

   net.ipv4.tcp_tw_recycle =1
   net.ipv4.tcp_tw_reuse =1

   net.ipv4.tcp_fin_timeout = 30
   net.ipv4.tcp_keepalive_time = 1200
   net.ipv4.tcp_max_syn_backlog = 8192
   net.ipv4.tcp_max_tw_buckets = 5000

kamailio:
ver: 3.2.1
config:
   1,kamailio.cfg

   tcp_children = 30
   tcp_connection_lifetime=960
   tcp_max_connections = 250000
   tcp_no_connect = yes
   tcp_poll_method = epoll_et
   
   tcp_rd_buf_size = 10000

   2,kamctlrc

   STARTOPTIONS="-m 8192 -M 64"



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http://sip-router.org/tracker/index.php?do=details&task_id=257

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