Zabbix agent in passive mode have several workers, but in active mode, only one worker, so in some cases it's did not check something in time, because one of check are slow & etc

It's will be very cool, if zabbix agent can have a several workers for active checks for asynchronous check data
In additional it's will be very useful is allowed to set very high timeout for execution of check, i.e. a several minutes, because some checks like "du -hs /dir" can be very slow, and at now i must create a many workarounds for that, like create a cronjob + script + zabbix_sender, it's not a cool, as it's difficult to integrate with LLD

Thanks.