ERRORE FATALE: allocazione evacuazione fallita - processo fuori memoria

Question

qualsiasi cosa io corro sul mio server ubuntu, ottengo sempre questo errore, qualcuno sa perché?

FATAL ERROR: Evacuation Allocation failed - process out of memory

$ node app.js 
FATAL ERROR: Evacuation Allocation failed - process out of memory 
Aborted (core dumped) 

$ npm install 
FATAL ERROR: Evacuation Allocation failed - process out of memory 
Aborted (core dumped) 

$ grunt -grunfile Gruntfile-online.js 
FATAL ERROR: Malloced operator new Allocation failed - process out of memory 
Aborted (core dumped) 

EDIT1

$ free 
      total  used  free  shared buffers  cached 
Mem:  4194304 2177148 2017156   0   0  936864 
-/+ buffers/cache: 1240284 2954020 
Swap:  3145728   4 3145724 

$ df -h 
Filesystem   Size Used Avail Use% Mounted on 
/dev/ploop36057p1 150G 7.6G 137G 6%/
none    2.0G 4.0K 2.0G 1% /dev 
none    410M 64K 410M 1% /run 
none    5.0M  0 5.0M 0% /run/lock 
none    2.0G  0 2.0G 0% /run/shm 

EDIT2

PID USER  PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 
    511 mongodb 20 0 879m 30m 7896 S 0.3 0.8 28:37.01 mongod 
    689 youtrack 20 0 2034m 671m 6632 S 0.3 16.4 57:36.62 java 
28610 my  20 0 17288 1380 1080 R 0.3 0.0 0:00.03 top 
    1 root  20 0 24148 1804 1060 S 0.0 0.0 0:05.11 init 
    2 root  20 0  0 0 0 S 0.0 0.0 0:00.00 kthreadd/107656 
    3 root  20 0  0 0 0 S 0.0 0.0 0:00.00 khelper/107656 
    4 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/0 
    5 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    6 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/2 
    7 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/3 
    8 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/4 
    9 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/5 
    10 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/6 
    11 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/7 
    12 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/8 
    13 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/9 
    14 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    15 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    16 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    17 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    18 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    19 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    20 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    21 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    22 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    23 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/1 
    24 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/2 
    25 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/2 
    26 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/2 
    27 root  20 0  0 0 0 S 0.0 0.0 0:00.00 rpciod/107656/2 
    28 root  20 0  0 0 0 S 0.0 0.0 0:00.00 nfsiod/107656