17 Upgrade notes for 7.0.6

This minor version does not have any upgrade notes.

Asynchronous poller state calculation

Asynchronous pollers are now considered busy if they have reached the limit set by the MaxConcurrentChecksPerPoller server/proxy configuration parameter. Utilization of poller processes can be monitored with the zabbix[process,,,] internal item.

StartPreprocessors default increased

The default value of the StartPreprocessors server/proxy configuration parameter has been increased from 3 to 16. To make the best use of available resources, the number of pre-started instances of preprocessing worker threads should be set to at least match the number of available CPU cores. If preprocessing tasks are not CPU-bound and involve frequent network requests, configuring additional workers is recommended.