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c60dbe4b55
is lighter weight. Increase the granularity of the statistics. Rounding to whole msec isn't accurate enough on a LAN.
118 lines
3.8 KiB
Plaintext
118 lines
3.8 KiB
Plaintext
--- fping.c.orig Mon Sep 20 13:10:23 1999
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+++ fping.c Mon Sep 20 13:15:05 1999
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@@ -185,7 +185,9 @@
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extern char *optarg;
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extern int optind,opterr;
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+#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
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extern char *sys_errlist[];
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+#endif
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#ifdef __cplusplus
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@@ -234,9 +236,9 @@
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int timeout = DEFAULT_TIMEOUT;
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int interval = DEFAULT_INTERVAL;
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-long max_reply=0;
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-long min_reply=10000;
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-int total_replies=0;
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+long max_reply=0; /* usec */
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+long min_reply=10000; /* usec */
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+int total_replies=0; /* usec */
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double sum_replies=0;
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struct timeval timeout_timeval;
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@@ -385,6 +387,7 @@
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}
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if (!ping_file) errno_crash_and_burn("fopen");
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while(fgets(line,132,ping_file)) {
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+ line[132-1] = '\0';
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sscanf(line,"%s",host);
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if ((!*host) || (host[0]=='#')) /* magic to avoid comments */
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continue;
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@@ -411,8 +414,8 @@
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cursor=cursor->next;
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}
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- gettimeofday(&start_time,&tz);
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cursor=rrlist;
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+ gettimeofday(&start_time,&tz);
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while (num_waiting) { /* while pings are outstanding */
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if ( (timeval_diff(¤t_time,&cursor->last_time)> timeout) ||
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cursor->num_packets_sent==0) {
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@@ -455,11 +458,11 @@
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min_reply=0; max_reply=0; total_replies=1; sum_replies=0;
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}
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- fprintf(stderr," %8d msec (min round trip time)\n",min_reply);
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- fprintf(stderr," %8d msec (avg round trip time)\n",(int)sum_replies/total_replies);
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- fprintf(stderr," %8d msec (max round trip time)\n",max_reply);
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+ fprintf(stderr," %8.3f msec (min round trip time)\n",min_reply/1000.0);
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+ fprintf(stderr," %8.3f msec (avg round trip time)\n",sum_replies/total_replies/1000.0);
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+ fprintf(stderr," %8.3f msec (max round trip time)\n",max_reply/1000.0);
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fprintf(stderr," %8.3f sec (elapsed real time)\n",
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- timeval_diff( &end_time,&start_time)/1000.0);
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+ timeval_diff( &end_time,&start_time)/1000000.0);
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fprintf(stderr,"\n");
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}
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@@ -493,8 +496,6 @@
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struct icmp *icp = (struct icmp *) buffer;
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int n,len;
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- gettimeofday(&h->last_time,&tz);
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-
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icp->icmp_type = ICMP_ECHO;
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icp->icmp_code = 0;
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icp->icmp_cksum = 0;
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@@ -504,12 +505,15 @@
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#define SIZE_PACK_SENT (sizeof(h->num_packets_sent))
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#define SIZE_LAST_TIME (sizeof(h->last_time))
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- bcopy(&h->last_time,&buffer[SIZE_ICMP_HDR],SIZE_LAST_TIME);
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bcopy(&h->num_packets_sent,
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&buffer[SIZE_ICMP_HDR+SIZE_LAST_TIME], SIZE_PACK_SENT);
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len = SIZE_ICMP_HDR+SIZE_LAST_TIME+SIZE_PACK_SENT;
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+ /* set the time at the very last possible point */
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+ gettimeofday(&h->last_time,&tz);
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+ bcopy(&h->last_time,&buffer[SIZE_ICMP_HDR],SIZE_LAST_TIME);
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+
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icp->icmp_cksum = in_cksum( (u_short *)icp, len );
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n = sendto( s, buffer, len, 0, (struct sockaddr *)&h->saddr,
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@@ -578,10 +582,12 @@
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return 1; /* packet received, don't about it anymore */
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}
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+ /* get time of receipt as close to the real time as possible */
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+ gettimeofday(¤t_time,&tz);
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+
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n=icp->icmp_seq;
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h=table[n];
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- gettimeofday(¤t_time,&tz);
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bcopy(&icp->icmp_data[0],&sent_time,sizeof(sent_time));
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bcopy(&icp->icmp_data[SIZE_LAST_TIME],&the_index, sizeof(the_index));
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this_reply = timeval_diff(¤t_time,&sent_time);
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@@ -594,7 +600,7 @@
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if (dns_flag) printf("%s",get_host_by_address(response_addr.sin_addr));
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else printf("%s",h->host);
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if (verbose_flag) printf(" is alive");
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- if (elapsed_flag) printf(" (%d msec)",this_reply);
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+ if (elapsed_flag) printf(" (%.3f msec)",this_reply/1000.0);
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printf("\n");
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}
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num_alive++;
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@@ -756,7 +762,7 @@
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temp =
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(((a->tv_sec*1000000)+ a->tv_usec) -
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- ((b->tv_sec*1000000)+ b->tv_usec))/1000;
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+ ((b->tv_sec*1000000)+ b->tv_usec));
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return (long) temp;
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