Ashok, Please check ulimit -a , the sample output looks below.

core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
pending signals                 (-i) 1024
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 3959
virtual memory          (kbytes, -v) unlimited
file locks                  (-x) unlimited
[download]

Verify whether virtual memory/file size is limited?. Otherwise check your code for leaking of memory.

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