Queue’s page is one of essential indicators to measure the performance of Server/Proxy on collect data.
But the numbers can be a little hard to understand. Let’s try make it easy:
Imagine that the last check from an item occurred at 11:05:00. It’s configured to check each 3 minutes (180 seconds delay), then the next check should be made at 11:08:00.
Something happened (like Zabbix Proxy was down) and this item was not checked at 11:08:00.
If the clock is now 11:09:10, this item is delayed 70 seconds, then it would appear in the column “1 minute”.
According to the image below, in the 5th line: