yod -bt

We say that an application process terminates abnormally if it terminates with a non-zero exit code or if it is terminated with a signal. If a process terminates with a signal, you can use the -bt option of yod to see a stack trace when the process terminates.

You will detect that an application process has terminated with a signal when yod displays a warning to this effect. yod only displays the first such termination that occurs. When the application completes, yod displays the exit code and terminating signal (if any) for each process (see figure 7.1).

Table 7.1: yod reports an abnormal termination

In this example both processes in the two node application experienced a segmentation fault 2 seconds after starting.

If we rerun this test with the -bt option we get more information, shown in figure 7.2.

Table 7.2: yod reports an abnormal termination with stack trace information