[Users] OOM and /etc/vz/oom-groups.conf

[Mark J.]

On Wed, Oct 02, 2013 at 03:47:48PM -0700, Kir Kolyshkin wrote:
> On 10/02/2013 12:07 PM, Mark J. wrote:
> >On Wed, Oct 02, 2013 at 11:48:02AM -0700, Kir Kolyshkin wrote:
> I suggest you to just put * as parent name then.
>

Will give that a try now that I have the other info you asked for below:
 
> This is 2G RAM. I haven't seen your my.cnf, but 2G is pretty generous,
> I am not really sure mysqld hits this, or is it a global memory shortage.
> Show me your /proc/user_beancounters or, yet better, vzubc output --
> after mysql is killed -- to find out. We are interested in
> failcnt/FAIL column.

Here is the ubc info from right after a mysql oom kill:

root at ssdman5 ~ #vzubc 3679
----------------------------------------------------------------
CT 3679      | HELD Bar% Lim%| MAXH Bar% Lim%| BAR | LIM | FAIL
-------------+---------------+---------------+-----+-----+------
     kmemsize|41.3M   -    - | 283M   -    - |   - |   - |    - 
  lockedpages|15.5M   -    - |33.5M   -    - |   - |   - |    - 
  privvmpages|3.07G   -    - |18.2G   -    - |   - |   - |    - 
     shmpages|4.15M   -    - |4.15M   -    - |   - |   - |    - 
      numproc| 246    -    - | 417    -    - |   - |   - |    - 
    physpages| 669M   -   32%|   2G   -  100%|   - |   2G| 1.37K
  vmguarpages|   -    -    - |   -    -    - |   - |   - |    - 
 oomguarpages| 702M   -    - |2.36G   -    - |   - |   - |  226 
   numtcpsock|  74    -    - | 158    -    - |   - |   - |    - 
     numflock|   9    -    - |  20    -    - |   - |   - |    - 
       numpty|   -    -    - |   2    -    - |   - |   - |    - 
   numsiginfo|   6    -    - |  36    -    - |   - |   - |    - 
    tcpsndbuf| 2.2M   -    - |6.83M   -    - |   - |   - |    - 
    tcprcvbuf|1.16M   -    - |2.52M   -    - |   - |   - |    - 
 othersockbuf| 629K   -    - |4.32M   -    - |   - |   - |    - 
  dgramrcvbuf|   -    -    - |88.1K   -    - |   - |   - |    - 
 numothersock| 104    -    - | 290    -    - |   - |   - |    - 
   dcachesize|21.4M   4%   4%| 266M  52%  52%| 512M| 512M|    - 
      numfile|1.77K   -    - |8.87K   -    - |   - |   - |    - 
    numiptent| 286    -    - | 286    -    - |   - |   - |    - 
    swappages| 105M   -   20%| 512M   -  100%|   - | 512M| 5.79M
----------------------------------------------------------------

> Also, I wonder how much RAM do you have on your server, and how
> many such containers do you run on it?

Nodes have 32G on them, this particular node only allows up to 40 vm's due to the cPanel vm's having either 2, 3, or 4G depending on the plan.