linux kernel - Why my process has been killed? -

i have program, written on c/c++ myself, killed linux. message "killed" appears. willing dig out problem observed inside file /var/log/kern.log:

  out of memory: kill process 3915 (my_proj) score 236 or sacrifice child   killed process 3915 (my_proj) total-vm:5503376kb, anon-rss:3857420kb, file-rss:40kb 

i not know how read information , if there useful information understand why killed happened. can me?

you victim of linux oom killer.

you can tune way oom killer handles oom conditions processes. example, my_proj process 3915 killed earlier. if want not killed oom killer, can :

echo -15 > /proc/3915/oom_adj