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ab mixing mean and median values, also wrong time values for start and connect when doing keep alive

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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@103135 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jean-Jacques Clar
2004-03-25 00:05:00 +00:00
parent cbbacdfa7e
commit b3661da07c
1 changed files with 38 additions and 37 deletions
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75
support/ab.c
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@ -872,10 +872,11 @@ static void output_results(void)
/* work out connection times */
long i;
apr_time_t totalcon = 0, total = 0, totald = 0, totalwait = 0;
apr_time_t meancon, meantot, meand, meanwait;
apr_interval_time_t mincon = AB_MAX, mintot = AB_MAX, mind = AB_MAX,
minwait = AB_MAX;
apr_interval_time_t maxcon = 0, maxtot = 0, maxd = 0, maxwait = 0;
apr_interval_time_t meancon = 0, meantot = 0, meand = 0, meanwait = 0;
apr_interval_time_t mediancon = 0, mediantot = 0, mediand = 0, medianwait = 0;
double sdtot = 0, sdcon = 0, sdd = 0, sdwait = 0;
for (i = 0; i < requests; i++) {
@ -895,21 +896,22 @@ static void output_results(void)
totald += s.time - s.ctime;
totalwait += s.waittime;
}
totalcon /= requests;
total /= requests;
totald /= requests;
totalwait /= requests;
meancon = totalcon / requests;
meantot = total / requests;
meand = totald / requests;
meanwait = totalwait / requests;
/* calculating the sample variance: the sum of the squared deviations, divided by n-1 */
for (i = 0; i < requests; i++) {
struct data s = stats[i];
double a;
a = ((double)s.time - total);
double a;
a = ((double)s.time - meantot);
sdtot += a * a;
a = ((double)s.ctime - totalcon);
a = ((double)s.ctime - meancon);
sdcon += a * a;
a = ((double)s.time - (double)s.ctime - totald);
a = ((double)s.time - (double)s.ctime - meand);
sdd += a * a;
a = ((double)s.waittime - totalwait);
a = ((double)s.waittime - meanwait);
sdwait += a * a;
}
@ -951,31 +953,31 @@ static void output_results(void)
qsort(stats, requests, sizeof(struct data),
(int (*) (const void *, const void *)) compradre);
if ((requests > 1) && (requests % 2))
meancon = (stats[requests / 2].ctime + stats[requests / 2 + 1].ctime) / 2;
mediancon = (stats[requests / 2].ctime + stats[requests / 2 + 1].ctime) / 2;
else
meancon = stats[requests / 2].ctime;
mediancon = stats[requests / 2].ctime;
qsort(stats, requests, sizeof(struct data),
(int (*) (const void *, const void *)) compri);
if ((requests > 1) && (requests % 2))
meand = (stats[requests / 2].time + stats[requests / 2 + 1].time \
mediand = (stats[requests / 2].time + stats[requests / 2 + 1].time \
-stats[requests / 2].ctime - stats[requests / 2 + 1].ctime) / 2;
else
meand = stats[requests / 2].time - stats[requests / 2].ctime;
mediand = stats[requests / 2].time - stats[requests / 2].ctime;
qsort(stats, requests, sizeof(struct data),
(int (*) (const void *, const void *)) compwait);
if ((requests > 1) && (requests % 2))
meanwait = (stats[requests / 2].waittime + stats[requests / 2 + 1].waittime) / 2;
medianwait = (stats[requests / 2].waittime + stats[requests / 2 + 1].waittime) / 2;
else
meanwait = stats[requests / 2].waittime;
medianwait = stats[requests / 2].waittime;
qsort(stats, requests, sizeof(struct data),
(int (*) (const void *, const void *)) comprando);
if ((requests > 1) && (requests % 2))
meantot = (stats[requests / 2].time + stats[requests / 2 + 1].time) / 2;
mediantot = (stats[requests / 2].time + stats[requests / 2 + 1].time) / 2;
else
meantot = stats[requests / 2].time;
mediantot = stats[requests / 2].time;
printf("\nConnection Times (ms)\n");
@ -983,18 +985,18 @@ static void output_results(void)
#define CONF_FMT_STRING "%5" APR_TIME_T_FMT " %4d %5.1f %6" APR_TIME_T_FMT " %7" APR_TIME_T_FMT "\n"
printf(" min mean[+/-sd] median max\n");
printf("Connect: " CONF_FMT_STRING,
mincon, (int) (totalcon + 0.5), sdcon, meancon, maxcon);
mincon, (int) (meancon + 0.5), sdcon, mediancon, maxcon);
printf("Processing: " CONF_FMT_STRING,
mind, (int) (totald + 0.5), sdd, meand, maxd);
mind, (int) (meand + 0.5), sdd, mediand, maxd);
printf("Waiting: " CONF_FMT_STRING,
minwait, (int) (totalwait + 0.5), sdwait, meanwait, maxwait);
minwait, (int) (meanwait + 0.5), sdwait, medianwait, maxwait);
printf("Total: " CONF_FMT_STRING,
mintot, (int) (total + 0.5), sdtot, meantot, maxtot);
mintot, (int) (meantot + 0.5), sdtot, mediantot, maxtot);
#undef CONF_FMT_STRING
#define SANE(what,avg,mean,sd) \
#define SANE(what,mean,median,sd) \
{ \
double d = (double)avg - mean; \
double d = (double)mean - median; \
if (d < 0) d = -d; \
if (d > 2 * sd ) \
printf("ERROR: The median and mean for " what " are more than twice the standard\n" \
@ -1003,21 +1005,20 @@ static void output_results(void)
printf("WARNING: The median and mean for " what " are not within a normal deviation\n" \
" These results are probably not that reliable.\n"); \
}
SANE("the initial connection time", totalcon, meancon, sdcon);
SANE("the processing time", totald, meand, sdd);
SANE("the waiting time", totalwait, meanwait, sdwait);
SANE("the total time", total, meantot, sdtot);
SANE("the initial connection time", meancon, mediancon, sdcon);
SANE("the processing time", meand, mediand, sdd);
SANE("the waiting time", meanwait, medianwait, sdwait);
SANE("the total time", meantot, mediantot, sdtot);
}
else {
printf(" min avg max\n");
#define CONF_FMT_STRING "%5" APR_TIME_T_FMT " %5" APR_TIME_T_FMT "%5" APR_TIME_T_FMT "\n"
printf("Connect: " CONF_FMT_STRING,
mincon, totalcon / requests, maxcon);
printf("Processing: " CONF_FMT_STRING, mintot - mincon,
(total / requests) - (totalcon / requests),
maxtot - maxcon);
mincon, meancon, maxcon);
printf("Processing: " CONF_FMT_STRING,
mintot - mincon, meantot - meancon, maxtot - maxcon);
printf("Total: " CONF_FMT_STRING,
mintot, total / requests, maxtot);
mintot, meantot, maxtot);
#undef CONF_FMT_STRING
}
@ -1489,7 +1490,6 @@ static void read_connection(struct connection * c)
if (c->keepalive && (c->bread >= c->length)) {
/* finished a keep-alive connection */
good++;
doneka++;
/* save out time */
if (good == 1) {
/* first time here */
@ -1501,6 +1501,7 @@ static void read_connection(struct connection * c)
}
if (done < requests) {
struct data s;
doneka++;
if (done && heartbeatres && !(done % heartbeatres)) {
fprintf(stderr, "Completed %ld requests\n", done);
fflush(stderr);
@ -1518,8 +1519,8 @@ static void read_connection(struct connection * c)
c->gotheader = 0;
c->cbx = 0;
c->read = c->bread = 0;
c->start = c->connect = apr_time_now(); /* zero connect time with keep-alive */
write_request(c);
c->start = c->connect; /* zero connect time with keep-alive */
}
}
@ -1786,14 +1787,14 @@ static void test(void)
static void copyright(void)
{
if (!use_html) {
printf("This is ApacheBench, Version %s\n", AP_AB_BASEREVISION " <$Revision: 1.142 $> apache-2.0");
printf("This is ApacheBench, Version %s\n", AP_AB_BASEREVISION " <$Revision: 1.143 $> apache-2.0");
printf("Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/\n");
printf("Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/\n");
printf("\n");
}
else {
printf("<p>\n");
printf(" This is ApacheBench, Version %s <i>&lt;%s&gt;</i> apache-2.0<br>\n", AP_AB_BASEREVISION, "$Revision: 1.142 $");
printf(" This is ApacheBench, Version %s <i>&lt;%s&gt;</i> apache-2.0<br>\n", AP_AB_BASEREVISION, "$Revision: 1.143 $");
printf(" Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/<br>\n");
printf(" Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/<br>\n");
printf("</p>\n<p>\n");