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Poller Settings

The Poller sub-tab of the Cacti settings are where you go to control many aspects of Data Collection in Cacti, you control various base collection frequencies, communication timeouts, and other settings that impact how Cacti's Data Collection works.

Genral Settings

The General Settings are a broad collection of settings into multiple categories. The image below shows Cacti's General Settings sub-section.

Settings Poller General

Those settings include:

NOTE: This only applies to the Data Source Profiles that are in use. If you only plan on polling every minute and therefore only using the 1 Minute Data Source Profile, then your Poller Interval should be 1 Minute as well.

NOTE: This only works with SNMP v2 and v3. It is not supported on older SNMP v1 Devices.

Background Timeout Settings

The settings below limit how long Cacti background processes will be allowed to run before timing out and being killed the system and notifying the Cacti administrator. These background timeouts are required to keep Cacti performing a peak performance by not allowing certain tasks to re-spawn while they are still running causing system overload. Below is the image of those settings.

Background Timeout Settings

Those settings include:

Data Collector Defaults

Cacti's Data Collectors include both concurrent process and thread settings. They are maintained at the Data Collector level due to the fact that not all Data Collectors are created equally. You may have one Data Collector that's collecting data from 1,000 hosts, and another that is collecting from 10. Maybe one is a Raspberry Pi and the other a two socket EPYC chip. You would not want the same settings for each.

These settings are only the defaults, when you fist create a Data Collector, once you save them, the setting stays with the individual Data Collector. Below, you can see an image of those settings.

Data Collector Defaults

Those settings include:

NOTE: The Thread setting only applies if you are using the spine poller. It does not apply to the cmd.php poller.

Additional Spine Parameters

These settings are Global Spine poller settings. They apply to all Data Collectors. An image of these settings can be seen below:

Additional Spine Parameters

Those settings include:


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