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add both sdev and mdev, it was so confused most time

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ref: http://www.plug.org/pipermail/plug/2005-June/002144.html
This commit is contained in:
Seven Du 2013-09-27 07:38:32 +08:00
parent 629856000d
commit 9b3f737a94
1 changed files with 15 additions and 4 deletions
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19
src/mod/applications/mod_sonar/mod_sonar.c
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@ -103,7 +103,7 @@ SWITCH_STANDARD_APP(sonar_app)
int loops; int loops;
int lost = 0; int lost = 0;
int x; int x;
int avg = 0, mdev = 0; int avg = 0, sdev = 0, mdev = 0;
int sum2; int sum2;
switch_event_t *event; switch_event_t *event;
sonar_ping_helper_t ph = { 0 }; sonar_ping_helper_t ph = { 0 };
@ -157,18 +157,28 @@ SWITCH_STANDARD_APP(sonar_app)
if (ph.received > 0) avg = ph.sum / ph.received; if (ph.received > 0) avg = ph.sum / ph.received;
sum2 = 0;
for(x = 0; x < ph.received; x++) {
sum2 += abs(ph.samples[x] - avg);
}
if (ph.received > 0) {
mdev = sum2 / ph.received;
}
sum2 = 0; sum2 = 0;
for(x = 0; x < ph.received; x++) { for(x = 0; x < ph.received; x++) {
sum2 += (ph.samples[x] - avg) * (ph.samples[x] - avg); sum2 += (ph.samples[x] - avg) * (ph.samples[x] - avg);
} }
if (ph.received > 1) { if (ph.received > 1) {
mdev = sqrt(sum2 / (ph.received - 1)); sdev = sqrt(sum2 / (ph.received - 1));
} }
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO,
"Sonar Ping (in ms): min:%d max:%d avg:%d mdev:%d sent:%d recv: %d lost:%d lost/send:%2.2f%%\n", "Sonar Ping (in ms): min:%d max:%d avg:%d sdev:%d mdev:%d sent:%d recv: %d lost:%d lost/send:%2.2f%%\n",
ph.min, ph.max, avg, mdev, loops, ph.received, lost, lost * 1.0 / loops); ph.min, ph.max, avg, sdev, mdev, loops, ph.received, lost, lost * 1.0 / loops);
if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, "sonar::ping") == SWITCH_STATUS_SUCCESS) { if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, "sonar::ping") == SWITCH_STATUS_SUCCESS) {
const char *verbose_event; const char *verbose_event;
@ -176,6 +186,7 @@ SWITCH_STANDARD_APP(sonar_app)
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_min", "%d", ph.min); switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_min", "%d", ph.min);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_max", "%d", ph.max); switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_max", "%d", ph.max);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_avg", "%d", avg); switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_avg", "%d", avg);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_sdev", "%d", sdev);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_mdev", "%d", mdev); switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_mdev", "%d", mdev);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_sent", "%d", loops); switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_sent", "%d", loops);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_recv", "%d", ph.received); switch_event_add_header(event, SWITCH_STACK_BOTTOM, "ping_recv", "%d", ph.received);