git:~# sysctl -a | grep overcommit
error: "Operation not permitted" reading key "net.ipv4.route.flush"
vm.overcommit_ratio = 50
vm.overcommit_memory = 0
git:~# cat /proc/user_beancounters 
Version: 2.5
       uid  resource                     held              maxheld              barrier                limit              failcnt
       40:  kmemsize                  3480487              4136968  9223372036854775807  9223372036854775807                    0
            lockedpages                     0                    0  9223372036854775807  9223372036854775807                    0
            privvmpages                  6561                18731  9223372036854775807  9223372036854775807                    0
            shmpages                     1424                 2080  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0                    0                    0                    0
            numproc                        21                   29  9223372036854775807  9223372036854775807                    0
            physpages                    3210                 4990  9223372036854775807  9223372036854775807                    0
            vmguarpages                     0                    0  9223372036854775807  9223372036854775807                    0
            oomguarpages                 3210                 4990  9223372036854775807  9223372036854775807                    0
            numtcpsock                      7                   23  9223372036854775807  9223372036854775807                    0
            numflock                        4                    5  9223372036854775807  9223372036854775807                    0
            numpty                          2                    2  9223372036854775807  9223372036854775807                    0
            numsiginfo                      0                    7  9223372036854775807  9223372036854775807                    0
            tcpsndbuf                   50512               342104  9223372036854775807  9223372036854775807                    0
            tcprcvbuf                    2544                67984  9223372036854775807  9223372036854775807                    0
            othersockbuf                 4592                12224  9223372036854775807  9223372036854775807                    0
            dgramrcvbuf                     0                 8440  9223372036854775807  9223372036854775807                    0
            numothersock                    3                   10  9223372036854775807  9223372036854775807                    0
            dcachesize                      0                    0  9223372036854775807  9223372036854775807                    0
            numfile                       478                  564  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0                    0                    0                    0
            dummy                           0                    0                    0                    0                    0
            dummy                           0                    0                    0                    0                    0
            numiptent                      10                   10  9223372036854775807  9223372036854775807                    0