Apache benchmark exporting csv file without the longest request.
Possible fix of this problem:

diff --git a/support/ab.c b/support/ab.c
index b26f0ac..b12e372 100644
--- a/support/ab.c
+++ b/support/ab.c
@@ -1038,7 +1038,7 @@ static void output_results(int sig)
                 exit(1);
             }
             fprintf(out, "" "Percentage served" "," "Time in ms" "\n");
-            for (i = 0; i < 100; i++) {
+            for (i = 0; i <= 100; i++) {
                 double t;
                 if (i == 0)
                     t = ap_double_ms(stats[0].time);