Memory usage over quota on Couchbase-server 3.0.1

Here is the result of the two commands:

For allocation:

MALLOC:    57461808912 (54799.9 MiB) Bytes in use by application
MALLOC: +  11297824768 (10774.4 MiB) Bytes in page heap freelist
MALLOC: +   9862720336 ( 9405.8 MiB) Bytes in central cache freelist
MALLOC: +       524256 (    0.5 MiB) Bytes in transfer cache freelist
MALLOC: +     27055552 (   25.8 MiB) Bytes in thread cache freelists
MALLOC: +    311734432 (  297.3 MiB) Bytes in malloc metadata
MALLOC:   ------------
MALLOC: =  78961668256 (75303.7 MiB) Actual memory used (physical + swap)
MALLOC: +    269885440 (  257.4 MiB) Bytes released to OS (aka unmapped)
MALLOC:   ------------
MALLOC: =  79231553696 (75561.1 MiB) Virtual address space used
MALLOC:
MALLOC:        4123541              Spans in use
MALLOC:             38              Thread heaps in use
MALLOC:           8192              Tcmalloc page size
------------------------------------------------
Call ReleaseFreeMemory() to release freelist memory to the OS (via madvise()).
Bytes released to the OS take up virtual address space but no physical memory.
------------------------------------------------
Total size of freelists for per-thread caches,
transfer cache, and central cache, by size class
------------------------------------------------
class   1 [        8 bytes ] :    52934 objs;   0.4 MiB;   0.4 cum MiB
class   2 [       16 bytes ] :   119140 objs;   1.8 MiB;   2.2 cum MiB
class   3 [       32 bytes ] :   855193 objs;  26.1 MiB;  28.3 cum MiB
class   4 [       48 bytes ] :   184196 objs;   8.4 MiB;  36.8 cum MiB
class   5 [       64 bytes ] :    11118 objs;   0.7 MiB;  37.4 cum MiB
class   6 [       80 bytes ] :    13394 objs;   1.0 MiB;  38.5 cum MiB
class   7 [       96 bytes ] :  2063127 objs; 188.9 MiB; 227.3 cum MiB
class   8 [      112 bytes ] :   577069 objs;  61.6 MiB; 289.0 cum MiB
class   9 [      128 bytes ] :    45066 objs;   5.5 MiB; 294.5 cum MiB
class  10 [      144 bytes ] :    14008 objs;   1.9 MiB; 296.4 cum MiB
class  11 [      160 bytes ] :    31038 objs;   4.7 MiB; 301.1 cum MiB
class  12 [      176 bytes ] :    14382 objs;   2.4 MiB; 303.5 cum MiB
class  13 [      192 bytes ] :     3461 objs;   0.6 MiB; 304.2 cum MiB
class  14 [      208 bytes ] :    10907 objs;   2.2 MiB; 306.3 cum MiB
class  15 [      224 bytes ] :    11663 objs;   2.5 MiB; 308.8 cum MiB
class  16 [      240 bytes ] :     8463 objs;   1.9 MiB; 310.8 cum MiB
class  17 [      256 bytes ] :     5991 objs;   1.5 MiB; 312.2 cum MiB
class  18 [      288 bytes ] :    14746 objs;   4.1 MiB; 316.3 cum MiB
class  19 [      320 bytes ] :     1480 objs;   0.5 MiB; 316.7 cum MiB
class  20 [      352 bytes ] :     1152 objs;   0.4 MiB; 317.1 cum MiB
class  21 [      384 bytes ] :     1227 objs;   0.4 MiB; 317.6 cum MiB
class  22 [      416 bytes ] :     1087 objs;   0.4 MiB; 318.0 cum MiB
class  23 [      448 bytes ] :     1030 objs;   0.4 MiB; 318.4 cum MiB
class  24 [      480 bytes ] :      973 objs;   0.4 MiB; 318.9 cum MiB
class  25 [      512 bytes ] :     1933 objs;   0.9 MiB; 319.8 cum MiB
class  26 [      576 bytes ] :      575 objs;   0.3 MiB; 320.2 cum MiB
class  27 [      640 bytes ] :      514 objs;   0.3 MiB; 320.5 cum MiB
class  28 [      704 bytes ] :      569 objs;   0.4 MiB; 320.8 cum MiB
class  29 [      768 bytes ] :      484 objs;   0.4 MiB; 321.2 cum MiB
class  30 [      832 bytes ] :      382 objs;   0.3 MiB; 321.5 cum MiB
class  31 [      896 bytes ] :    16082 objs;  13.7 MiB; 335.2 cum MiB
class  32 [      960 bytes ] :   890389 objs; 815.2 MiB; 1150.4 cum MiB
class  33 [     1024 bytes ] :  1069929 objs; 1044.9 MiB; 2195.3 cum MiB
class  34 [     1152 bytes ] :  1633535 objs; 1794.7 MiB; 3989.9 cum MiB
class  35 [     1280 bytes ] :      280 objs;   0.3 MiB; 3990.3 cum MiB
class  36 [     1408 bytes ] :      254 objs;   0.3 MiB; 3990.6 cum MiB
class  37 [     1536 bytes ] :      277 objs;   0.4 MiB; 3991.0 cum MiB
class  38 [     1792 bytes ] :      200 objs;   0.3 MiB; 3991.4 cum MiB
class  39 [     2048 bytes ] :   138693 objs; 270.9 MiB; 4262.2 cum MiB
class  40 [     2304 bytes ] :    64545 objs; 141.8 MiB; 4404.1 cum MiB
class  41 [     2560 bytes ] :      162 objs;   0.4 MiB; 4404.5 cum MiB
class  42 [     2816 bytes ] :    18357 objs;  49.3 MiB; 4453.8 cum MiB
class  43 [     3072 bytes ] :    98603 objs; 288.9 MiB; 4742.6 cum MiB
class  44 [     3328 bytes ] :    60816 objs; 193.0 MiB; 4935.7 cum MiB
class  45 [     4096 bytes ] :   122084 objs; 476.9 MiB; 5412.5 cum MiB
class  46 [     4608 bytes ] :    77812 objs; 341.9 MiB; 5754.5 cum MiB
class  47 [     5120 bytes ] :    84056 objs; 410.4 MiB; 6164.9 cum MiB
class  48 [     6144 bytes ] :   139578 objs; 817.8 MiB; 6982.8 cum MiB
class  49 [     6656 bytes ] :    68770 objs; 436.5 MiB; 7419.3 cum MiB
class  50 [     8192 bytes ] :    70818 objs; 553.3 MiB; 7972.6 cum MiB
class  51 [     9216 bytes ] :    51878 objs; 456.0 MiB; 8428.5 cum MiB
class  52 [    10240 bytes ] :    12598 objs; 123.0 MiB; 8551.5 cum MiB
class  53 [    12288 bytes ] :      503 objs;   5.9 MiB; 8557.4 cum MiB
class  54 [    13312 bytes ] :        3 objs;   0.0 MiB; 8557.5 cum MiB
class  55 [    16384 bytes ] :        2 objs;   0.0 MiB; 8557.5 cum MiB
class  59 [    32768 bytes ] :       19 objs;   0.6 MiB; 8558.1 cum MiB
class  72 [   139264 bytes ] :       10 objs;   1.3 MiB; 8559.4 cum MiB
class  75 [   163840 bytes ] :        2 objs;   0.3 MiB; 8559.7 cum MiB
------------------------------------------------
PageHeap: 119 sizes; 10774.4 MiB free;  257.4 MiB unmapped
------------------------------------------------
     1 pages * 147778 spans ~ 1154.5 MiB; 1154.5 MiB cum; unmapped:    2.5 MiB;    2.5 MiB cum
     2 pages * 118252 spans ~ 1847.7 MiB; 3002.2 MiB cum; unmapped:    0.1 MiB;    2.6 MiB cum
     3 pages *  32226 spans ~  755.3 MiB; 3757.5 MiB cum; unmapped:    0.1 MiB;    2.7 MiB cum
     4 pages *  30645 spans ~  957.7 MiB; 4715.2 MiB cum; unmapped:    0.1 MiB;    2.7 MiB cum
     5 pages *   5889 spans ~  230.0 MiB; 4945.2 MiB cum; unmapped:    0.0 MiB;    2.8 MiB cum
     6 pages *   4618 spans ~  216.5 MiB; 5161.7 MiB cum; unmapped:    0.0 MiB;    2.8 MiB cum
     7 pages *    632 spans ~   34.6 MiB; 5196.2 MiB cum; unmapped:    0.1 MiB;    2.9 MiB cum
     8 pages *    627 spans ~   39.2 MiB; 5235.4 MiB cum; unmapped:    0.1 MiB;    2.9 MiB cum
     9 pages *    107 spans ~    7.5 MiB; 5242.9 MiB cum; unmapped:    0.1 MiB;    3.0 MiB cum
    10 pages *    146 spans ~   11.4 MiB; 5254.3 MiB cum; unmapped:    0.1 MiB;    3.1 MiB cum
    11 pages *     34 spans ~    2.9 MiB; 5257.3 MiB cum; unmapped:    0.0 MiB;    3.1 MiB cum
    12 pages *     23 spans ~    2.2 MiB; 5259.4 MiB cum; unmapped:    0.1 MiB;    3.2 MiB cum
    13 pages *      8 spans ~    0.8 MiB; 5260.2 MiB cum; unmapped:    0.1 MiB;    3.3 MiB cum
    14 pages *      3 spans ~    0.3 MiB; 5260.6 MiB cum; unmapped:    0.0 MiB;    3.3 MiB cum
    15 pages *      1 spans ~    0.1 MiB; 5260.7 MiB cum; unmapped:    0.0 MiB;    3.3 MiB cum
    16 pages *      6 spans ~    0.8 MiB; 5261.4 MiB cum; unmapped:    0.0 MiB;    3.3 MiB cum
    18 pages *   3517 spans ~  494.6 MiB; 5756.0 MiB cum; unmapped:    0.8 MiB;    4.1 MiB cum
    19 pages *    794 spans ~  117.9 MiB; 5873.9 MiB cum; unmapped:    0.7 MiB;    4.9 MiB cum
    20 pages *   3058 spans ~  477.8 MiB; 6351.7 MiB cum; unmapped:    0.9 MiB;    5.8 MiB cum
    21 pages *    646 spans ~  106.0 MiB; 6457.7 MiB cum; unmapped:    0.8 MiB;    6.6 MiB cum
    22 pages *   2288 spans ~  393.2 MiB; 6850.9 MiB cum; unmapped:    1.0 MiB;    7.6 MiB cum
    23 pages *    527 spans ~   94.7 MiB; 6945.6 MiB cum; unmapped:    0.9 MiB;    8.5 MiB cum
    24 pages *   1597 spans ~  299.4 MiB; 7245.0 MiB cum; unmapped:    1.1 MiB;    9.7 MiB cum
    25 pages *    328 spans ~   64.1 MiB; 7309.1 MiB cum; unmapped:    1.0 MiB;   10.6 MiB cum
    26 pages *   1241 spans ~  252.1 MiB; 7561.2 MiB cum; unmapped:    1.2 MiB;   11.9 MiB cum
    27 pages *    239 spans ~   50.4 MiB; 7611.6 MiB cum; unmapped:    1.1 MiB;   12.9 MiB cum
    28 pages *   1001 spans ~  219.0 MiB; 7830.6 MiB cum; unmapped:    1.3 MiB;   14.2 MiB cum
    29 pages *    193 spans ~   43.7 MiB; 7874.3 MiB cum; unmapped:    1.4 MiB;   15.6 MiB cum
    30 pages *    783 spans ~  183.5 MiB; 8057.8 MiB cum; unmapped:    1.4 MiB;   17.0 MiB cum
    31 pages *    133 spans ~   32.2 MiB; 8090.0 MiB cum; unmapped:    1.2 MiB;   18.2 MiB cum
    32 pages *    655 spans ~  163.8 MiB; 8253.8 MiB cum; unmapped:    1.5 MiB;   19.7 MiB cum
    33 pages *    105 spans ~   27.1 MiB; 8280.8 MiB cum; unmapped:    1.3 MiB;   21.0 MiB cum
    34 pages *    526 spans ~  139.7 MiB; 8420.6 MiB cum; unmapped:    1.6 MiB;   22.6 MiB cum
    35 pages *     78 spans ~   21.3 MiB; 8441.9 MiB cum; unmapped:    1.4 MiB;   24.0 MiB cum
    36 pages *    454 spans ~  127.7 MiB; 8569.6 MiB cum; unmapped:    1.7 MiB;   25.6 MiB cum
    37 pages *     77 spans ~   22.3 MiB; 8591.8 MiB cum; unmapped:    1.4 MiB;   27.1 MiB cum
    38 pages *    396 spans ~  117.6 MiB; 8709.4 MiB cum; unmapped:    1.8 MiB;   28.9 MiB cum
    39 pages *     60 spans ~   18.3 MiB; 8727.7 MiB cum; unmapped:    1.5 MiB;   30.4 MiB cum
    40 pages *    364 spans ~  113.8 MiB; 8841.4 MiB cum; unmapped:    1.9 MiB;   32.3 MiB cum
    41 pages *     41 spans ~   13.1 MiB; 8854.6 MiB cum; unmapped:    1.6 MiB;   33.9 MiB cum
    42 pages *    294 spans ~   96.5 MiB; 8951.0 MiB cum; unmapped:    2.0 MiB;   35.8 MiB cum
    43 pages *     36 spans ~   12.1 MiB; 8963.1 MiB cum; unmapped:    1.3 MiB;   37.2 MiB cum
    44 pages *    279 spans ~   95.9 MiB; 9059.0 MiB cum; unmapped:    1.7 MiB;   38.9 MiB cum
    45 pages *     19 spans ~    6.7 MiB; 9065.7 MiB cum; unmapped:    1.8 MiB;   40.7 MiB cum
    46 pages *    211 spans ~   75.8 MiB; 9141.5 MiB cum; unmapped:    2.2 MiB;   42.8 MiB cum
    47 pages *     27 spans ~    9.9 MiB; 9151.5 MiB cum; unmapped:    1.8 MiB;   44.7 MiB cum
    48 pages *    191 spans ~   71.6 MiB; 9223.1 MiB cum; unmapped:    1.9 MiB;   46.5 MiB cum
    49 pages *     28 spans ~   10.7 MiB; 9233.8 MiB cum; unmapped:    1.9 MiB;   48.4 MiB cum
    50 pages *    188 spans ~   73.4 MiB; 9307.2 MiB cum; unmapped:    2.3 MiB;   50.8 MiB cum
    51 pages *     20 spans ~    8.0 MiB; 9315.2 MiB cum; unmapped:    2.4 MiB;   53.2 MiB cum
    52 pages *    179 spans ~   72.7 MiB; 9387.9 MiB cum; unmapped:    2.4 MiB;   55.6 MiB cum
    53 pages *     21 spans ~    8.7 MiB; 9396.6 MiB cum; unmapped:    2.1 MiB;   57.7 MiB cum
    54 pages *    157 spans ~   66.2 MiB; 9462.9 MiB cum; unmapped:    2.5 MiB;   60.2 MiB cum
    55 pages *     12 spans ~    5.2 MiB; 9468.0 MiB cum; unmapped:    1.7 MiB;   61.9 MiB cum
    56 pages *    129 spans ~   56.4 MiB; 9524.4 MiB cum; unmapped:    2.6 MiB;   64.6 MiB cum
    57 pages *     18 spans ~    8.0 MiB; 9532.5 MiB cum; unmapped:    2.7 MiB;   67.2 MiB cum
    58 pages *    125 spans ~   56.6 MiB; 9589.1 MiB cum; unmapped:    2.3 MiB;   69.5 MiB cum
    59 pages *     14 spans ~    6.5 MiB; 9595.6 MiB cum; unmapped:    2.3 MiB;   71.8 MiB cum
    60 pages *    114 spans ~   53.4 MiB; 9649.0 MiB cum; unmapped:    2.3 MiB;   74.1 MiB cum
    61 pages *     12 spans ~    5.7 MiB; 9654.7 MiB cum; unmapped:    2.4 MiB;   76.5 MiB cum
    62 pages *     97 spans ~   47.0 MiB; 9701.7 MiB cum; unmapped:    2.4 MiB;   79.0 MiB cum
    63 pages *     12 spans ~    5.9 MiB; 9707.6 MiB cum; unmapped:    2.5 MiB;   81.4 MiB cum
    64 pages *     81 spans ~   40.5 MiB; 9748.1 MiB cum; unmapped:    2.5 MiB;   83.9 MiB cum
    65 pages *     16 spans ~    8.1 MiB; 9756.2 MiB cum; unmapped:    2.5 MiB;   86.5 MiB cum
    66 pages *     80 spans ~   41.2 MiB; 9797.5 MiB cum; unmapped:    3.1 MiB;   89.5 MiB cum
    67 pages *     13 spans ~    6.8 MiB; 9804.3 MiB cum; unmapped:    3.1 MiB;   92.7 MiB cum
    68 pages *     71 spans ~   37.7 MiB; 9842.0 MiB cum; unmapped:    3.2 MiB;   95.9 MiB cum
    69 pages *      9 spans ~    4.9 MiB; 9846.9 MiB cum; unmapped:    2.7 MiB;   98.6 MiB cum
    70 pages *     63 spans ~   34.5 MiB; 9881.3 MiB cum; unmapped:    2.7 MiB;  101.3 MiB cum
    71 pages *      4 spans ~    2.2 MiB; 9883.5 MiB cum; unmapped:    2.2 MiB;  103.5 MiB cum
    72 pages *     39 spans ~   21.9 MiB; 9905.5 MiB cum; unmapped:    2.8 MiB;  106.3 MiB cum
    73 pages *      4 spans ~    2.3 MiB; 9907.7 MiB cum; unmapped:    2.3 MiB;  108.6 MiB cum
    74 pages *     53 spans ~   30.6 MiB; 9938.4 MiB cum; unmapped:    3.5 MiB;  112.1 MiB cum
    75 pages *     12 spans ~    7.0 MiB; 9945.4 MiB cum; unmapped:    2.9 MiB;  115.0 MiB cum
    76 pages *     45 spans ~   26.7 MiB; 9972.1 MiB cum; unmapped:    3.0 MiB;  118.0 MiB cum
    77 pages *     10 spans ~    6.0 MiB; 9978.1 MiB cum; unmapped:    3.6 MiB;  121.6 MiB cum
    78 pages *     37 spans ~   22.5 MiB; 10000.7 MiB cum; unmapped:    3.0 MiB;  124.6 MiB cum
    79 pages *      4 spans ~    2.5 MiB; 10003.2 MiB cum; unmapped:    1.9 MiB;  126.5 MiB cum
    80 pages *     39 spans ~   24.4 MiB; 10027.5 MiB cum; unmapped:    2.5 MiB;  129.0 MiB cum
    81 pages *      4 spans ~    2.5 MiB; 10030.1 MiB cum; unmapped:    2.5 MiB;  131.5 MiB cum
    82 pages *     35 spans ~   22.4 MiB; 10052.5 MiB cum; unmapped:    3.8 MiB;  135.4 MiB cum
    83 pages *      1 spans ~    0.6 MiB; 10053.1 MiB cum; unmapped:    0.6 MiB;  136.0 MiB cum
    84 pages *     24 spans ~   15.8 MiB; 10068.9 MiB cum; unmapped:    3.3 MiB;  139.3 MiB cum
    85 pages *      2 spans ~    1.3 MiB; 10070.2 MiB cum; unmapped:    0.0 MiB;  139.3 MiB cum
    86 pages *     37 spans ~   24.9 MiB; 10095.1 MiB cum; unmapped:    3.4 MiB;  142.7 MiB cum
    87 pages *      3 spans ~    2.0 MiB; 10097.1 MiB cum; unmapped:    2.0 MiB;  144.7 MiB cum
    88 pages *     30 spans ~   20.6 MiB; 10117.7 MiB cum; unmapped:    3.4 MiB;  148.1 MiB cum
    89 pages *      2 spans ~    1.4 MiB; 10119.1 MiB cum; unmapped:    1.4 MiB;  149.5 MiB cum
    90 pages *     19 spans ~   13.4 MiB; 10132.5 MiB cum; unmapped:    3.5 MiB;  153.0 MiB cum
    91 pages *      4 spans ~    2.8 MiB; 10135.3 MiB cum; unmapped:    2.8 MiB;  155.9 MiB cum
    92 pages *     23 spans ~   16.5 MiB; 10151.9 MiB cum; unmapped:    3.6 MiB;  159.5 MiB cum
    93 pages *      3 spans ~    2.2 MiB; 10154.0 MiB cum; unmapped:    2.2 MiB;  161.7 MiB cum
    94 pages *     17 spans ~   12.5 MiB; 10166.5 MiB cum; unmapped:    3.7 MiB;  165.3 MiB cum
    95 pages *      2 spans ~    1.5 MiB; 10168.0 MiB cum; unmapped:    1.5 MiB;  166.8 MiB cum
    96 pages *     15 spans ~   11.2 MiB; 10179.3 MiB cum; unmapped:    3.8 MiB;  170.6 MiB cum
    97 pages *      2 spans ~    1.5 MiB; 10180.8 MiB cum; unmapped:    1.5 MiB;  172.1 MiB cum
    98 pages *     15 spans ~   11.5 MiB; 10192.3 MiB cum; unmapped:    4.6 MiB;  176.7 MiB cum
    99 pages *      3 spans ~    2.3 MiB; 10194.6 MiB cum; unmapped:    2.3 MiB;  179.0 MiB cum
   100 pages *     20 spans ~   15.6 MiB; 10210.2 MiB cum; unmapped:    4.7 MiB;  183.7 MiB cum
   101 pages *      1 spans ~    0.8 MiB; 10211.0 MiB cum; unmapped:    0.8 MiB;  184.5 MiB cum
   102 pages *     18 spans ~   14.3 MiB; 10225.3 MiB cum; unmapped:    4.0 MiB;  188.5 MiB cum
   104 pages *     10 spans ~    8.1 MiB; 10233.5 MiB cum; unmapped:    3.2 MiB;  191.7 MiB cum
   106 pages *     14 spans ~   11.6 MiB; 10245.1 MiB cum; unmapped:    4.1 MiB;  195.8 MiB cum
   107 pages *      3 spans ~    2.5 MiB; 10247.6 MiB cum; unmapped:    2.5 MiB;  198.4 MiB cum
   108 pages *     11 spans ~    9.3 MiB; 10256.9 MiB cum; unmapped:    4.2 MiB;  202.6 MiB cum
   109 pages *      1 spans ~    0.9 MiB; 10257.7 MiB cum; unmapped:    0.9 MiB;  203.4 MiB cum
   110 pages *      8 spans ~    6.9 MiB; 10264.6 MiB cum; unmapped:    4.3 MiB;  207.7 MiB cum
   111 pages *      2 spans ~    1.7 MiB; 10266.3 MiB cum; unmapped:    1.7 MiB;  209.5 MiB cum
   112 pages *      5 spans ~    4.4 MiB; 10270.7 MiB cum; unmapped:    4.4 MiB;  213.8 MiB cum
   113 pages *      1 spans ~    0.9 MiB; 10271.6 MiB cum; unmapped:    0.9 MiB;  214.7 MiB cum
   114 pages *     12 spans ~   10.7 MiB; 10282.3 MiB cum; unmapped:    4.5 MiB;  219.2 MiB cum
   116 pages *     10 spans ~    9.1 MiB; 10291.3 MiB cum; unmapped:    5.4 MiB;  224.6 MiB cum
   117 pages *      1 spans ~    0.9 MiB; 10292.2 MiB cum; unmapped:    0.9 MiB;  225.5 MiB cum
   118 pages *      6 spans ~    5.5 MiB; 10297.8 MiB cum; unmapped:    4.6 MiB;  230.1 MiB cum
   120 pages *      7 spans ~    6.6 MiB; 10304.3 MiB cum; unmapped:    5.6 MiB;  235.8 MiB cum
   122 pages *      5 spans ~    4.8 MiB; 10309.1 MiB cum; unmapped:    4.8 MiB;  240.5 MiB cum
   124 pages *      6 spans ~    5.8 MiB; 10314.9 MiB cum; unmapped:    3.9 MiB;  244.4 MiB cum
   125 pages *      2 spans ~    2.0 MiB; 10316.9 MiB cum; unmapped:    2.0 MiB;  246.3 MiB cum
   126 pages *      2 spans ~    2.0 MiB; 10318.8 MiB cum; unmapped:    2.0 MiB;  248.3 MiB cum
>255   large *    251 spans ~  713.0 MiB; 11031.8 MiB cum; unmapped:    9.1 MiB;  257.4 MiB cum

For memory:

 bytes:                               57365397968
 ep_blob_num:                         30098210
 ep_blob_overhead:                    1514622591
 ep_item_num:                         11254
 ep_kv_size:                          50892806250
 ep_max_size:                         73400320000
 ep_mem_high_wat:                     62390272000
 ep_mem_low_wat:                      55050240000
 ep_mem_tracker_enabled:              true
 ep_oom_errors:                       0
 ep_overhead:                         2758090214
 ep_storedval_num:                    362772373
 ep_storedval_overhead:               1514622591
 ep_storedval_size:                   29021789840
 ep_tmp_oom_errors:                   0
 ep_value_size:                       25498739888
 mem_used:                            57365397968
 tcmalloc_current_thread_cache_bytes: 27647072
 tcmalloc_max_thread_cache_bytes:     33554432
 total_allocated_bytes:               57452351696
 total_fragmentation_bytes:           9894530864
 total_free_mapped_bytes:             11303051264
 total_free_unmapped_bytes:           269885440
 total_heap_bytes:                    78919819264

With the exact value from the RSS (77091732/1024/1024), I got 73.5 Go, which is a smaller difference, but still above the limit. Maybe there is a small overhead which explain that. The growth is slow, maybe it will finally stops, but I have to wait to know that.