t_dtrace_ft
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;
t->t_dtrace_ft = 0;