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Show standard deviation.

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PR:		bin/35433
Submitted by:	Morten Rodal <morten@rodal.no>,
		Maxim Konovalov <maxim@macomnet.ru>
MFC after:	1 week
This commit is contained in:
Hajimu UMEMOTO 2002-03-01 09:49:48 +00:00
parent 4d422c0622
commit 4adb3cea54
3 changed files with 11 additions and 10 deletions
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4
sbin/ping6/Makefile
View File

@ -9,8 +9,8 @@ WARNS= 0
BINOWN= root
BINMODE=4555
LDADD= -lipsec -lmd
DPADD= ${LIBIPSEC} ${LIBMD}
LDADD= -lipsec -lm -lmd
DPADD= ${LIBIPSEC} ${LIBM} ${LIBMD}
# kame scopeid hack
CFLAGS+=-DKAME_SCOPEID

9
sbin/ping6/ping6.8
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@ -302,7 +302,8 @@ When the specified number of packets have been sent
or if the program is terminated with a
.Dv SIGINT ,
a brief summary is displayed, showing the number of packets sent and
received, and the minimum, mean, and maximum of the round-trip times.
received, and the minimum, mean, maximum, and standard deviation of
the round-trip times.
.Pp
If
.Nm
@ -313,9 +314,9 @@ receives a
argument for
.Xr stty 1 )
signal, the current number of packets sent and received, and the
minimum, mean, and maximum of the round-trip times will be written to
the standard output in the same format as the standard completion
message.
minimum, mean, maximum, and standard deviation of the round-trip times
will be written to the standard output in the same format as the
standard completion message.
.Pp
This program is intended for use in network testing, measurement and
management.

8
sbin/ping6/ping6.c
View File

@ -123,7 +123,7 @@ static const char rcsid[] =
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#if defined(__OpenBSD__) || defined(__NetBSD__)
#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
#include <math.h>
#endif
#include <signal.h>
@ -233,7 +233,7 @@ int timing; /* flag to do timing */
double tmin = 999999999.0; /* minimum round trip time */
double tmax = 0.0; /* maximum round trip time */
double tsum = 0.0; /* sum of all times, for doing average */
#if defined(__OpenBSD__) || defined(__NetBSD__)
#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
#endif
@ -1433,7 +1433,7 @@ pr_pack(buf, cc, mhdr)
triptime = ((double)tv.tv_sec) * 1000.0 +
((double)tv.tv_usec) / 1000.0;
tsum += triptime;
#if defined(__OpenBSD__) || defined(__NetBSD__)
#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
tsumsq += triptime * triptime;
#endif
if (triptime < tmin)
@ -2180,7 +2180,7 @@ summary()
/* Only display average to microseconds */
double num = nreceived + nrepeats;
double avg = tsum / num;
#if defined(__OpenBSD__) || defined(__NetBSD__)
#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
double dev = sqrt(tsumsq / num - avg * avg);
(void)printf(
"round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",