gistfile1.d

/*
 Probes fire when a Ruby process starts and ends garbage collection. Perhaps similar to mri_instrumentation's implementation?_
*/

    pid$1::rb_gc:entry
    {
      printf("Garbage Collection has started!\t");
      trace(timestamp);
      printf("\n");
    }

    pid$1::rb_gc:return
    {
      printf("Garbage Collection has ended!\t");
      trace(timestamp);
      printf("\n");
    }