Openvz kernel: [10186978.064405] TCP: time wait bucket table overflow (CT3) -

Openvz kernel: [10186978.064405] TCP: time wait bucket table overflow (CT3)

kernel: [10186978.064405] TCP: time wait bucket table overflow (CT3)

Varying opinions are out there but in general it seems like the most common culprit is a lack of privvmpages, with a modern OpenVZ system the best way is to set privvmpages as equal to what your RAM is and this has resolved the messages on another system.

If it's truly a TCP issue you can adjust the following parameters:

Source: Openvz forums

1) Per-system tw_count is greater than per-system max_tw_buckets limit:
tw_count < sysctl_max_tw_buckets
net.ipv4.tcp_max_tw_buckets = 1800000
IMHO very unlikely in your situation

2) Per-VE counter is greater than per-VE max_tw_buckets limit:
tw_count < sysctl_tcp_max_tw_buckets_ub
net.ipv4.tcp_max_tw_buckets_ub = 165360


  • MySQL Adding New Field to Existing Database Table
  • MySQL Cannot Update/Write to any database table solution
  • Centos How To Update to Glibc 2.14 Plus
  • php remove last letters of string
  • MySQL Maximum INT Size Truncation Issue/Warning
  • MySQL How To Add New Field Column To Existing Table
  • mysql how to reset passwords with a few commands
  • htaccess apache how deny/allow to block or allow by IP address
  • PHP geoip.so fatal error Solution
  • Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: /etc/httpd/modules/libphp5.so: cannot open shared object file: No such file or direct
  • GCC 5 on Centos 6 - How To Install
  • bash find line and replace howto
  • How To Create Apache htpasswd file
  • possible SYN flooding on ctid 42131, port 80. Sending cookies. - Solution
  • Linux last command show login by IP instead of hostname
  • Install Windows From a Linux TFTP Server instead of using WDS Solution
  • How To Secure Samba NMBD/SMBD to bind to a specific IP address
  • tftp: client does not accept options - solution if you are using UEFI PXEBoot disable it!
  • Linux how to view video card make and exact model
  • Authentication refused: bad ownership or modes for directory /home/user SSH Public Key Authentication Failed Solution