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

Latest Articles

  • AMD Set Fan Speed and Other Powerplay Memory/CPU Timings with a Linux script
  • Ethereum Mining Claymore Nanopool Error
  • genisoimage errors with long filenames and deep directory structures
  • Linux Kernel USB Export Errors
  • How to download gajim 0.16.9 XMPP/Jabber client so you can use OMEMO encryption
  • HP DL385 G7 Linux BIOS Update Flash
  • hwloc-nox set CPU affinity in Linux
  • Firefox An error occurred during a connection to some-ip-or-domain. SSL peer reports incorrect Message Authentication Code. Error code: SSL_ERROR_BAD_MAC_ALERT Solution
  • Proxmox understanding the directory structure and why an NFS datastore appears to be missing files/isos
  • pandoc convert markdown to html
  • Proxmox error uploading an iso solution
  • Cannot install moodle
  • MySQL change for Antelope format to Barracuda error solution
  • vmkping -I vmk1 10.0.2.69 PING 10.0.2.69 (10.0.2.69): 56 data bytes sendto() failed (Host is down)
  • gvfs mount in /run/user cannot be accessed or displayed wrong permissions
  • VMWare vSphere 6.7 Errors Solution 503 Service Unavailable (Failed to connect to endpoint:
  • How To Enable Nested KVM so guests can virtualize with hardware extensions
  • vi error solution E166: Can't open linked file for writing
  • Supermicro IPMI / KVM / BMC Remote Console Screen Resizing Issue - Window Cut Off Solution
  • Linux bash shell doesn't show username, hostname or current path fix solution