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Print the maximum resolution time encountered by each thread. Did you

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know that the resolver might keep trying on a getaddrinfo() for up to
FIVE MINUTES?
This commit is contained in:
Brian Feldman 2004-02-21 02:52:49 +00:00
parent 7411109704
commit bdb764aa04
1 changed files with 25 additions and 5 deletions
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30
tools/regression/gaithrstress/gaithrstress.c
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@ -24,11 +24,11 @@
* SUCH DAMAGE.
*
* $FreeBSD$
* $Id: getaddrinfo-pthreads-stresstest.c,v 1.4 2004/02/20 03:54:17 green Exp green $
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
@ -46,6 +46,7 @@
struct worker {
pthread_t w_thread; /* self */
uintmax_t w_lookup_success, w_lookup_failure; /* getaddrinfo stats */
struct timespec w_max_lookup_time;
};
static volatile int workers_stop = 0;
@ -100,6 +101,7 @@ work(void *arg)
do {
const char *suffixes[] = { "net", "com", "org" };
const size_t nsuffixes = sizeof(suffixes) / sizeof(suffixes[0]);
struct timespec ts_begintime, ts_total;
struct addrinfo *res;
char *hostname;
int error;
@ -112,7 +114,19 @@ work(void *arg)
randwords[my_arc4random_r() % nrandwords] : "",
suffixes[my_arc4random_r() % nsuffixes]) == -1)
continue;
(void)clock_gettime(CLOCK_REALTIME, &ts_begintime);
error = getaddrinfo(hostname, NULL, NULL, &res);
(void)clock_gettime(CLOCK_REALTIME, &ts_total);
ts_total.tv_sec -= ts_begintime.tv_sec;
ts_total.tv_nsec -= ts_begintime.tv_nsec;
if (ts_total.tv_nsec < 0) {
ts_total.tv_sec--;
ts_total.tv_nsec += 1000000000;
}
if (ts_total.tv_sec > w->w_max_lookup_time.tv_sec ||
(ts_total.tv_sec == w->w_max_lookup_time.tv_sec &&
ts_total.tv_nsec > w->w_max_lookup_time.tv_sec))
w->w_max_lookup_time = ts_total;
free(hostname);
if (error == 0) {
w->w_lookup_success++;
@ -234,11 +248,17 @@ main(int argc, char **argv) {
fflush(stdout);
}
printf("%-10s%-20s%-20s\n", "Worker", "Successful GAI", "Failed GAI");
printf("%-10s%-20s%-20s\n", "------", "--------------", "----------");
printf("%-10s%-20s%-20s%-29s\n", "Worker", "Successful GAI",
"Failed GAI", "Max resolution time (M:SS*)");
printf("%-10s%-20s%-20s%-29s\n", "------", "--------------",
"----------", "---------------------------");
for (i = 0; i < nworkers; i++) {
printf("%-10u%-20ju%-20ju\n", i, workers[i].w_lookup_success,
workers[i].w_lookup_failure);
printf("%-10u%-20ju%-20ju%u:%s%.2f\n", i,
workers[i].w_lookup_success, workers[i].w_lookup_failure,
workers[i].w_max_lookup_time.tv_sec / 60,
workers[i].w_max_lookup_time.tv_sec % 60 < 10 ? "0" : "",
(double)(workers[i].w_max_lookup_time.tv_sec % 60) +
(double)workers[i].w_max_lookup_time.tv_nsec / 1e9);
}
exit(0);