steadystate: check for division by zero in mean calculation

[fio.git] / steadystate.c

diff --git a/steadystate.c b/steadystate.c
index 1e3a546896ad8b1379368019272ba3ab11b6284f..ee1c0e5b637d0512302ea96fb4e7f9263a4c5799 100644 (file)
--- a/steadystate.c
+++ b/steadystate.c
@@ -350,6 +350,9 @@ uint64_t steadystate_bw_mean(struct thread_stat *ts)
        int i;
        uint64_t sum;
 
+       if (!ts->ss_dur)
+               return 0;
+
        for (i = 0, sum = 0; i < ts->ss_dur; i++)
                sum += ts->ss_bw_data[i];
 
@@ -361,6 +364,9 @@ uint64_t steadystate_iops_mean(struct thread_stat *ts)
        int i;
        uint64_t sum;
 
+       if (!ts->ss_dur)
+               return 0;
+
        for (i = 0, sum = 0; i < ts->ss_dur; i++)
                sum += ts->ss_iops_data[i];