double run_test(int n_fakeswitches, struct fakeswitch * fakeswitches,
int mstestlen, int delay) {
struct timeval now, then, diff;
struct pollfd * pollfds;
int i;
double sum = 0;
double passed;
int count;
int total_wait = mstestlen + delay;
time_t tNow;
struct tm *tmNow;
pollfds = malloc(n_fakeswitches * sizeof(struct pollfd));
assert(pollfds);
gettimeofday(&then, NULL);
while (1) {
gettimeofday(&now, NULL);
timersub(&now, &then, &diff);
if ((1000 * diff.tv_sec + (float) diff.tv_usec / 1000) > total_wait)
break;
#ifdef USE_EPOLL
for (i = 0; i < MAX_EVENTS; i++) {
events[i].events = EPOLLIN | EPOLLOUT;
}
int nfds = epoll_wait(epollfd, events, MAX_EVENTS, -1);
for (i = 0; i < nfds; i++) {
fakeswitch_handle_io(events[i].data.ptr, &(events[i].events));
}
#else
for(i = 0; i < n_fakeswitches; i++)
fakeswitch_set_pollfd(&fakeswitches[i], &pollfds[i]);
poll(pollfds, n_fakeswitches, 1000);
for(i = 0; i < n_fakeswitches; i++)
fakeswitch_handle_io(&fakeswitches[i], &pollfds[i]);
#endif
}
tNow = now.tv_sec;
tmNow = localtime(&tNow);
printf("%02d:%02d:%02d.%03d %-3d switches: flows/sec: ", tmNow->tm_hour,
tmNow->tm_min, tmNow->tm_sec, (int) (now.tv_usec / 1000),
n_fakeswitches);
usleep(100000); // sleep for 100 ms, to let packets queue
for (i = 0; i < n_fakeswitches; i++) {
count = fakeswitch_get_count(&fakeswitches[i]);
printf("%d ", count);
sum += count;
}
passed = 1000 * diff.tv_sec + (double) diff.tv_usec / 1000;
passed -= delay; // don't count the time we intentionally delayed
sum /= passed; // is now per ms
printf(" total = %lf per ms \n", sum);
free(pollfds);
return sum;
}
double run_test(int n_fakeswitches, struct fakeswitch * fakeswitches, int mstestlen, int delay)
{
struct timeval now, then, diff;
struct pollfd * pollfds;
int i;
double sum = 0;
double passed;
int count;
int total_wait = mstestlen + delay;
time_t tNow;
struct tm *tmNow;
pollfds = malloc(n_fakeswitches * sizeof(struct pollfd));
assert(pollfds);
gettimeofday(&then,NULL);
while(1)
{
gettimeofday(&now, NULL);
timersub(&now, &then, &diff);
if( (1000* diff.tv_sec + (float)diff.tv_usec/1000)> total_wait)
break;
for(i = 0; i< n_fakeswitches; i++)
fakeswitch_set_pollfd(&fakeswitches[i], &pollfds[i]);
poll(pollfds, n_fakeswitches, 1000); // block until something is ready or 100ms passes
for(i = 0; i< n_fakeswitches; i++)
fakeswitch_handle_io(&fakeswitches[i], &pollfds[i]);
}
tNow = now.tv_sec;
tmNow = localtime(&tNow);
printf("%02d:%02d:%02d.%03d %-3d switches: fmods/sec: ", tmNow->tm_hour, tmNow->tm_min, tmNow->tm_sec, (int)(now.tv_usec/1000), n_fakeswitches);
usleep(100000); // sleep for 100 ms, to let packets queue
for( i = 0 ; i < n_fakeswitches; i++)
{
count = fakeswitch_get_count(&fakeswitches[i]);
printf("%d ", count);
sum += count;
}
passed = 1000 * diff.tv_sec + (double)diff.tv_usec/1000;
passed -= delay; // don't count the time we intentionally delayed
sum /= passed; // is now per ms
printf(" total = %lf per ms \n", sum);
free(pollfds);
return sum;
}
