Impact of Reducing the Polling Interval

amrita1690

Hi All,

A very basic and general question, though I know its answer to an extent but I might be missing out something or the other. Can you please help me in answering the below queries.

What impact will it make on the pollers and database if we:

1. reduce the ICMP polling interval from 120 seconds (default) to 10 seconds

2. reduce the Statistics Polling interval from 10 minutes(default ) to 1 minute

Will this slow does the whole system ?

At what ratio does this increases the polling rate of a poller ?

Thanks!

yaquaholic

With those polling rates, you would quite simply have a 12X increase in ICMP and a 10X increase in statistics polling.

So as long as your overall polling performance is under ~10% you should get away with it.

But an increase in the number of objects being polled, would add additional load and could push it over the 100% polling rate very quickly.

When the polling rate is exceeded, the Orion platform will automatically throttle it back, as we reached poller saturation (before buying more additional polling engines), the first thing we noticed was the statistics polling interval increased from the default 5 to 10 minutes.

As saeron​​ mentioned, there is also the additional load on the database, which will be handling 10X the data in the same time period.

Personally I would only up the polling rate on devices that really need that level of detail and then only when something is being troubleshot.

Even then, using Windows perfrmon locally on the server can give better troubleshooting data (which gives down to the second resolution).

And don't forget the new real-time polling functionality of PerfStack - Real-Time Polling - Because Time is The Only Constant