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My application runs as a background process on Linux. It is currently started at the command line in a Terminal window.
Recently a user was executing the application for a while and it died mysteriously. The text:
Killed
was on the terminal. This happened two times. I asked if someone at a different Terminal used the kill command to kill the process? No.
Under what conditions would Linux decide to kill my process? I believe the shell displayed "killed" because the process died after receiving the kill(9) signal. If Linux sent the kill signal should there be a message in a system log somewhere that explains why it was killed?
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The process to be killed is based on a score taking into account runtime (long-running processes are safer), memory usage (greedy processes are less safe), and a few other factors, including a value you can adjust to make a process less likely to be killed.
Killall command allows you to terminate all the processes owned by a specific user. To do this, use the -u flag.
If the user or sysadmin did not kill the program the kernel may have. The kernel would only kill a process under exceptional circumstances such as extreme resource starvation (think mem+swap exhaustion).
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Try:
dmesg -T| grep -E -i -B100 'killed process' Where -B100 signifies the number of lines before the kill happened.
Omit -T on Mac OS.
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