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vzlicmonitor service memory leak

APPLIES TO:
  • Parallels Virtuozzo Containers for Linux 4.7
  • Parallels Virtuozzo Containers for Linux 4.6
  • Parallels Server

Symptoms

  • vzlicmonitor service consumes a lot of memory.

    top - 15:53:05 up 133 days, 15:55,  3 users,  load average: 1.83, 2.66, 2.53
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
     2143 root      20   0  646m 628m 5008 S  0.0  1.3  34:08.67 vzlicmonitor
    
  • Containers receive OOM Kill signals due to memory shortage:

    Feb 22 07:54:13 BX12761 kernel: kill_signal(1532.2): selecting to kill, queued 0, seq 107, exc 0 45 goal 0 3740...
    Feb 22 07:54:13 BX12761 kernel: kill_signal(1532.2): selected 5, signalled 5, queued 5, seq 107, exc 0 3740 red 28559 3970
    Feb 22 07:54:13 BX12761 kernel: OOM killed process init (pid=10993, ve=1532) exited, free=132604 gen=144.
    Feb 22 07:54:13 BX12761 kernel: CT: 1532: stopped
    

Cause

The problem is recognized as a products bug. Internal IDs for the corresponding product branches:

  • PVC 4.6: PCLIN-32362
  • PVC 4.7: PCLIN-31499
  • PSBM 5.0: PSBM-17040

Resolution

vzlicmonitor service restart can be done as a temporary solution.

For the permanent fix install product updates:

  • PVC 4.6: The fix will be available in one of next Tools Updates.
  • PVC 4.7: The issue is fixed since TU-4.7.0-290 (vzlicutils-4.7.0-16)
  • PSBM 5.0: The issue is fixed since PSBM 5.0 Update 8 (vzlicutils-psbm-4.7.1-8)

Search words:

OOM killed process init

vzlicmon

vzlicmonitor




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