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I have 8GB RAM, when memory is exceeded (chrome + vbox + something else):

  1. hard mouse freezes
  2. permanently lit SSD led
  3. in 90% of cases I can't login in tty, system without any response, necessary to reset only
  4. in 10% I login in tty and kill chrome or vbox and system is back to life

I run free -m every 2 seconds, and specifically fill all RAM, when free swap begins to decrease - it happens. The same thing happens with disabled swap, when free memory is decreasing to zero.

Other devices with Ubuntu 14.04, and 12.04 have same problem.

How I can solve this?

Linux E5550 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
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  • when memory is involved: start by checking if the modules are perfect. But ... a "hard" freeze to me means a keyboard lock and requiring a reboot ;-) If the system sort of still works (but slow) you can also start "top" on a tty and check what is hogging the system (I would asssume either chrome or vbox and not both(?))
    – Rinzwind
    Feb 14, 2016 at 22:56
  • 2
    How much main memory (RAM+swap) does your system have in total (see /proc/meminfo)? Is the swap space on a reasonably fast storage medium? What are the values of other relevant virtual memory management parameters like vm.swappiness? Feb 14, 2016 at 23:03
  • 1
    good idea would probably be to increase swappines and amount of swap Feb 15, 2016 at 0:44
  • @Rinzwind, yes. I can't login in tty even Feb 22, 2016 at 14:59
  • @DavidFoerster, vm.dirty_writeback_centisecs = 6000 vm.swappiness = 15 vm.dirty_background_ratio = 50 vm.laptop_mode=0 vm.dirty_ratio=10 vm.dirty_background_ratio=10 vm.drop_caches=3 $ free -m<br/> total used free shared buffers cached<br/> Mem: 7879 7523 355 711 252 2141<br/> -/+ buffers/cache: 5129 2749<br/> Swap: 8083 411 7672<br/> Feb 22, 2016 at 15:01

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