Changed -O default from 1 to 0.

src/iperf.h

@@ -209,7 +209,7 @@ struct iperf_test
 #define uS_TO_NS 1000
 #define SEC_TO_US 1000000LL
 #define UDP_RATE (1024 * 1024) /* 1 Mbps */
-#define OMIT 1 /* seconds */
+#define OMIT 0 /* seconds */
 #define DURATION 10 /* seconds */
 
 #define SEC_TO_NS 1000000000LL	/* too big for enum/const on some platforms */

src/iperf3.1

@@ -116,7 +116,6 @@ instead of the usual write(2).
 .BR -O ", " --omit " \fIn\fR"
 Omit the first n seconds of the test, to skip past the TCP slow-start
 period.
-The default is 1 second; to not omit anything, use "-O 0".
 
 .SH AUTHORS
 Iperf was originally written by Mark Gates and Alex Warshavsky.