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| author | Thomas Habets <thomas@habets.se> | 2012-03-12 22:38:44 +0000 |
|---|---|---|
| committer | Thomas Habets <thomas@habets.se> | 2012-03-12 22:38:44 +0000 |
| commit | a56d0fb201d2a84efd17f529eb1b31988321be26 (patch) | |
| tree | 789df53d6cbf24a5310775c99172afaa1aec697f | |
| parent | c4e02d75b5318de9c0370189e987278fac91891b (diff) | |
| download | arping-a56d0fb201d2a84efd17f529eb1b31988321be26.tar.gz | |
Added final statistics line with min/avg/max/std-dev.
| -rw-r--r-- | src/arping.c | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/src/arping.c b/src/arping.c index 4a9cca6..59881e3 100644 --- a/src/arping.c +++ b/src/arping.c @@ -150,6 +150,11 @@ static unsigned int numsent = 0; /* packets sent */ static unsigned int numrecvd = 0; /* packets received */ static unsigned int numdots = 0; /* dots that should be printed */ +static double stats_min_time = -1; +static double stats_max_time = -1; +static double stats_total_time = 0; +static double stats_total_sq_time = 0; + /* RAWRAW is RAW|RRAW */ static enum { NORMAL, /* normal output */ QUIET, /* No output. -q */ @@ -403,6 +408,31 @@ static int get_mac_addr(const char *in, } /** + * + */ +static void +update_stats(double sample) +{ + if (stats_min_time < 0 || sample < stats_min_time) { + stats_min_time = sample; + } + if (sample > stats_max_time) { + stats_max_time = sample; + } + stats_total_time += sample; + stats_total_sq_time += sample * sample; +} + +/** + * + */ +static double +timespec2dbl(const struct timespec *tv) +{ + return tv->tv_sec + (double)tv->tv_nsec / 1000000000; +} + +/** * max size of buffer is intsize + 1 + intsize + 4 = 70 bytes or so * * Still, I'm using at least 128bytes below @@ -415,8 +445,8 @@ static char *ts2str(const struct timespec *tv, const struct timespec *tv2, double f,f2; int exp = 0; - f = tv->tv_sec + (double)tv->tv_nsec / 1000000000; - f2 = tv2->tv_sec + (double)tv2->tv_nsec / 1000000000; + f = timespec2dbl(tv); + f2 = timespec2dbl(tv2); f = (f2 - f) * 1000000000; while (f > 1000) { exp += 3; @@ -600,6 +630,8 @@ pingip_recv(const char *unused, struct pcap_pkthdr *h, uint8_t *packet) return; } if (dstip == ip) { + update_stats(timespec2dbl(&arrival) + - timespec2dbl(&lastpacketsent)); switch(display) { case DOT: numdots++; @@ -623,7 +655,8 @@ pingip_recv(const char *unused, struct pcap_pkthdr *h, uint8_t *packet) printf(" time=%s", ts2str(&lastpacketsent, &arrival,buf)); - break; } + break; + } case QUIET: break; case RAWRAW: @@ -704,6 +737,8 @@ pingmac_recv(const char *unused, struct pcap_pkthdr *h, uint8_t *packet) return; } } + update_stats(timespec2dbl(&arrival) + - timespec2dbl(&lastpacketsent)); switch(display) { case QUIET: break; @@ -1332,6 +1367,17 @@ int main(int argc, char **argv) target,numsent,numrecvd, (succ < 0.0) ? 0.0 : succ, (succ < 0.0) ? (numrecvd - numsent): 0); + if (numrecvd) { + double avg = stats_total_time / numrecvd; + printf("rtt min/avg/max/std-dev = " + "%.3f/%.3f/%.3f/%.3f ms", + 1000*stats_min_time, + 1000*avg, + 1000*stats_max_time, + 1000*sqrt(stats_total_sq_time/numrecvd + -avg*avg)); + } + printf("\n"); } if (finddup) { |