The average value from zapi.trend.get is different from GUI

[ella87]

Hi, just meet this issue recently, we found that with the same duration (2hours), the average of traffic from zapi.trend.get is quite different from what we can see in the Zabbix GUI.

The traffic average value from zapi.trend.get is smaller than the value from Zabbix GUI.

Does anyone know why?

def get_utilization_avg(item_ids, item_name, time_from, time_till):
    # Query item's trend (float) data (all should be float value)
    history = zapi.trend.get(itemids=item_ids, time_from=time_from, time_till=time_till,
                             output=["itemid", "value_avg"], limit="1", history=0)
    avg_value = float(history[0].get('value_avg'))
    if 'bond' in item_name:
        avg = round(avg_value / (1024 * 1024), 2)
    elif 'idle' in item_name:
        avg = round(100 - avg_value, 2)
    else:
        avg = round(avg_value, 2)
    return avg

Moreover, the value after 2 hour is always the same, as shown in below snapshot during performance testing.

[ella87]

Hi, sorry for this, it is the value convert not correct, after I checked, the bps -> Mbps should divide 1,000,000, not 1024*1024.
avg = round(avg_value / (1024 * 1024), 2) => avg = round(avg_value / 1000000, 2)
But for why the value is always the same after that time, I didn't know

[jooola]

Hi, I am gonna close this as this seem unrelated to the pyzabbix library.

[ella87]

Okay, thanks, I'll keep investigating this issue myself.